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Clearsynth is a leading innovator in pharmaceutical reference standards, offering high-quality Reference Standards for Sulfonic Acid, including both pharmacopeial and non-pharmacopeial impurities, metabolites, stable isotope products, and nitrosamines (N-NO products). Our Sulfonic Acid impurity reference standards are invaluable for pharmaceutical research, supporting product development, ANDA and DMF submissions, quality control (QC), method validation, and stability studies. They also aid in identifying unknown impurities and assessing genotoxic potential.
Our Sulfonic Acid-related products undergo thorough characterization and are supplied with detailed Certificates of Analysis (COA) and analytical data that meet regulatory requirements. All supplied products are re-tested at regular intervals to ensure ongoing quality and compliance.

Sulfonic Acid Related Compounds

Stable Isotopes

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
[2,3,4-13C3]-Perfluorobutane sulfonic acid Stable Isotopes CS-O-45186 2265893-06-7 Enquire
1,1,1-Trifluoromethanesulfonic Acid 2-(2-Propen-1-yl)phenyl ... Stable Isotopes CS-T-102008 Not Available Enquire
2-(4-Amino-1,3,5-triazin-2-yl)sulfanylethanesulfonic Acid-d4 Stable Isotopes CS-T-99381 1794793-34-2 Enquire
2-(Perfluorohexyl)ethane-1-sulfonic Acid Sodium Salt--13C2 Stable Isotopes CS-T-102901 2708218-89-5 Enquire
2,2'-[Carbonylbis(thio)]bisethanesulfonic Acid-d8 Disodium S... Stable Isotopes CS-T-99339 Not Available Enquire
2-Anthraquinonesulfonic Acid Sodium Salt-d7 Stable Isotopes CS-T-99379 Not Available Enquire
2-Naphthalenesulfonic acid, hydrate-d7 Stable Isotopes CS-O-59244 312623-89-5 Enquire
3-((ethyl(nitroso)amino)methyl)benzenesulfonic acid (D4-Ring... Stable Isotopes CS-O-44282 Not Available Enquire
3-((ethyl-D5(nitroso)amino)methyl)benzenesulfonic acid Stable Isotopes CS-O-44281 Not Available Enquire
3-(Acetylmethylamino)-1-propanesulfonic Acid Calcium Salt-d6 Stable Isotopes CS-T-98755 Not Available Enquire
3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,10-Heptadecafluoro-1-decan... Stable Isotopes CS-T-102902 2708218-90-8 Enquire
4-​Methyl-​benzenesulfonic Acid (2E)​-​[(5R)​-​2-​Methyl-​5-... Stable Isotopes CS-T-102644 510753-48-7(Unlabelled) Enquire
4,4-Dimethyl-4-(silapentane-d6)-1-sulfonic Acid Stable Isotopes CS-TB-39595 284664-85-3 Enquire
4-Chlorobenzenesulfonic Acid-d4 Sodium Salt Stable Isotopes CS-T-102403 2514953-11-6 Enquire
4-Hydroxybenzenesulfonic Acid-13C6 Stable Isotopes CS-T-103123 98-67-9(Unlabelled) Enquire
Dimethachlor Ethane Sulfonic Acid Sodium Salt-d6 Stable Isotopes CS-T-96244 Not Available Enquire
METHANESULFONIC ACID D4 Stable Isotopes CS-R-00469 203578-15-8 Enquire
O-Desethyl Resiquimod-d6 p-Toluenesulfonic Acid Salt Stable Isotopes CS-T-102539 Not Available Enquire
Perfluorooctane sulfonic acid 13C8 Stable Isotopes CS-O-45182 2265893-05-6 Enquire
Perfluorooctylsulfonic Acid-13C8 50 μg/mL in Methanol Stable Isotopes CS-O-47216 2265893-05-6 Enquire
trans-Clopenthixol-d4 (-)-10-Camphorsulfonic Acid Salt Stable Isotopes CS-T-99324 Not Available Enquire
Zuclopenthixol-d4 (-)-10-Camphorsulfonic Acid Salt Stable Isotopes CS-T-99045 Not Available Enquire
[U-Ring-13C6]-4-Nitrobenzene sulfonic acid Stable Isotopes CS-EK-01038 138-42-1 unlabeled Enquire
2-(4,6-Diamino-1,3,5-triazin-2-yl)sulfanylethanesulfonic Aci... Stable Isotopes CS-T-88234 1794737-32-8 Enquire
2-[[(Guanidino)(imino)methyl]sulfanyl]ethanesulfonic Acid-d4 Stable Isotopes CS-T-79267 1794941-90-4 Enquire
4-Acetamidobenzenesulfonic Acid-d4 Stable Isotopes CS-T-46924 1388717-85-8 Enquire
4-Acetamidobenzenesulfonic Acid-d4 Pyridine (Major) Stable Isotopes CS-T-64189 1794782-52-7 Enquire
4-Aminobenzene sulfonic acid 13C6 Stable Isotopes CS-CX-00349 897013-76-2 Enquire
5-(Acetylamino)-1,3,4-thiadiazole-2-sulfonic Acid-d3 Stable Isotopes CS-T-99397 Not Available Enquire
5-(Acetylimino)-4,5-dihydro-4-methyl-1,3,4-thiadiazole-2-sul... Stable Isotopes CS-O-15627 1795143-17-7 Enquire
a,4-Dihydroxy-3-methoxy-a-methyl-benzeneethanesulfonic Acid ... Stable Isotopes CS-T-90645 1794789-29-9 Enquire
Aminoiminomethanesulfonic Acid 15N2,13C Stable Isotopes CS-T-47875 1246820-44-9 Enquire
Epinephrine Sulfonic Acid-d3 Stable Isotopes CS-T-92101 1346604-55-4 Enquire
Metazachlor Ethane Sulfonic Acid-d6 Sodium Salt Stable Isotopes CS-T-95406 Not Available Enquire
Perfluoro-n-octanesulfonic acid-13C4 Stable Isotopes CS-O-35604 960354-19-2 Enquire
Poly(ethylene oxide-d4), a,w-bis(sulfonic acid)-terminated ... Stable Isotopes CS-PM-01631 Not Available Enquire
Poly(styrene sulfonic acid) and its salts Stable Isotopes CS-PM-01550 Not Available Enquire
Poly(styrene sulfonic acid-d7) Stable Isotopes CS-PM-01551 Not Available Enquire
Poly(styrene sulfonic acid-d7, cesium salt) Stable Isotopes CS-PM-01552 Not Available Enquire
Poly(styrene sulfonic acid-d7, sodium salt) Stable Isotopes CS-PM-01553 Not Available Enquire
Poly(styrene-d8), a,w-bis(sulfonic acid)-terminated Stable Isotopes CS-PM-01650 Not Available Enquire
Poly(styrene-d8), w-(sulfonic acid)-terminated Stable Isotopes CS-PM-01649 Not Available Enquire
Tamsulosin Sulfonic Acid-d4 Stable Isotopes CS-T-86838 1795786-82-1 Enquire
Valdecoxib Sulfonic Acid-13C2,15N Stable Isotopes CS-T-87642 1391053-52-3 Enquire
α-Hydroxy-cyclohexanemethanesulfonic Acid-d11 Sodium Salt Stable Isotopes CS-T-79064 1246815-06-4 Enquire


API

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
3-(N-Morpholino)propanesulfonic acid API CS-AR-00300 1132-61-2 Enquire


Metabolite

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
8-sulfonic acid apomorphine Metabolite CS-O-45574 1145912-09-9 Enquire
Benzenesulfonic Acid Isopropyl Ester Metabolite CS-O-07355 6214-18-2 In Stock
Benzenesulfonic Acid Butyl Ester Metabolite CS-O-07353 80-44-4 Enquire


Impurity

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
(-)-Camphorsulfonic Acid Methyl Ester Impurity CS-O-45431 83603-04-7 Enquire
(2R,3S)-Efinaconazole p-Toluenesulfonic acid Impurity CS-O-44979 Not Available Enquire
(E)-7-Hydroxy-3,3'-dioxo-[2,2'-biindolinylidene]-5,5'-disulf... Impurity CS-O-59162 ---- Enquire
(S)-Dimethenamid ethane sulfonic acid 2-carboxylic acid impu... Impurity CS-O-46998 Not Available Enquire
(S)-Dimethenamid ethane sulfonic acid L-alanine impurity Impurity CS-O-46999 Not Available Enquire
(S)-Dimethenamid-ethane sulfonic acid Impurity CS-O-46995 Not Available Enquire
2-((2,4-dimethylthiophen-3-yl)amino)-2-oxoethane-1-sulfonic ... Impurity CS-O-47005 Not Available Enquire
2-(4,6-Diamino-1,3,5-triazin-2-yl)sulfanylethanesulfonic Aci... Impurity CS-T-88457 1391054-56-0 In Stock
2,2'-Dihydroxy-3,3'-dioxo-[2,2'-biindoline]-5,5'-disulfonic ... Impurity CS-O-59163 786615-03-0 Enquire
2,6-Difluorobenzenesulfonic acid Impurity CS-O-45558 686258-75-3 In Stock
3-Pyridinesulfonic acid Impurity CS-M-57748 636-73-7 Enquire
4-(trifluoromethyl)benzenesulfonic acid Impurity CS-O-54958 109787-11-3 Enquire
4-acetamido-3-methylbenzenesulfonic acid, sodium salt Impurity CS-O-45635 102568-34-3 Enquire
4-Oxo Gemifloxacin methanesulfonic acid salt Impurity CS-O-49008 284474-31-3 (Freebase) Enquire
6,6 -Oxybis-2-naphthalenesulfonic Acid Disodium Salt Impurity CS-T-38394 61551-82-4 Enquire
6-chloro-3,4-dihydro-2H-benzo[e][1,2,4]thiadiazine-7-sulfoni... Impurity CS-O-43346 Not Available Enquire
Benzenesulfonic Acid Ethyl Ester Impurity CS-O-07354 515-46-8 In Stock
Benzylidene Camphor Sulfonic Acid Impurity CS-ED-42348 56039-58-8 Enquire
D-(+)-α-Bromocamphor-8-sulfonic Acid Ammonium Salt Impurity CS-T-08020 14575-84-9 In Stock
Desmethoxyamino Hydroxy Gemifloxacin methanesulfonic acid Impurity CS-O-49006 213672-25-4 (Freebase) Enquire
Epinephrine 5- benzenesulfonic acid Impurity CS-O-51550 2469755-95-9 Enquire
Epinephrine 6-benzenesulfonic acid Impurity CS-O-51551 2731964-60-4 Enquire
Epinephrine Sulfonic acid sodium salt Impurity CS-O-54361 Not Available In Stock
m-Cresol-4-Sulfonic Acid Ammonium Impurity CS-O-14027 ---- In Stock
R-Apomorphine-8-Sulfonic Acid Impurity CS-O-46786 Not Available Enquire
Tamsulosin Sulfonic Acid Impurity CS-T-43135 890708-67-5 In Stock
Thiosulfonic Acid Bindschedler Green Impurity CS-O-37671 15967-15-4 In Stock
Vasopressin Di-Sulfonic Acid Impurity Impurity CS-O-56796 ---- Enquire
(+)-3-Bromo-8-camphorsulfonic Acid Impurity CS-T-49528 5344-58-1 Enquire
(1S)-(+)-10-Camphorsulfonic Acid Ethyl Ester Impurity CS-T-68845 154335-57-6 Enquire
(2,3,3-trimethyl-3H-indole-5-sulfonic acid) Impurity CS-O-36460 132557-72-3 Enquire
(4-Nitrophenyl) methanesulfonic acid Impurity CS-O-40214 53992-33-9 Enquire
(Benzyl R -1,2,3,4-tetrahydroisoquinoline-3-carboxylate p -... Impurity CS-O-36814 227290-59-7 Enquire
(S)-Rasagiline Ethanesulfonic acid Impurity CS-T-85528 202464-89-9 Enquire
1,1,1-Trifluoromethanesulfonic Acid 2-(1,3-Dihydro-1,3-dioxo... Impurity CS-T-45366 128651-50-3 Enquire
1,2-Naphtoquinone-4-sulfonic acid Potassium salt Impurity CS-BX-00573 5908-27-0 Enquire
1-Ethyl-1H-benzimidazole-2-sulfonic acid Impurity CS-M-47694 90331-19-4 Enquire
1-Methyl-1H-benzimidazole-2-sulfonic acid Impurity CS-M-47696 5533-38-0 Enquire
1-Naphthol-5-sulfonic acid Impurity CS-DL-01083 117-59-9 Enquire
2-(4-Amino-1,3,5-triazin-2-yl)sulfanylethanesulfonic Acid Po... Impurity CS-T-66317 1391054-81-1 Enquire
2,2-Bis-[3-(1-methylpiperidin-4-yl)-1H-indol-5-yl]ethanesulf... Impurity CS-T-66943 1346604-16-7 Enquire
2,3-Dihydro-1H-indole-5-sulfonic acid amide Impurity CS-M-16225 52206-06-1 Enquire
2-[[(Guanidino)(imino)methyl]sulfanyl]ethanesulfonic Acid Impurity CS-T-79389 1391053-66-9 Enquire
2-Amino-3-bromopyridine-5-sulfonic Acid Impurity CS-T-02035 247582-62-3 Enquire
2-amino-4-chloro-5-sulfamoylbenzenesulfonic acid Impurity CS-O-41337 Not Available Enquire
2-Methyl-1H-imidazole-5-sulfonic Acid Impurity CS-T-34068 861346-39-6 Enquire
2-Naphthol-6,8-disulfonic acid disodium salt Impurity CS-ED-42005 842-19-3 Enquire
3-Aminobenzenesulfonic acid Impurity CS-M-42936 121-47-1 Enquire
3-Amino-Benzenesulfonic Acid Ethyl Ester Impurity CS-P-08657 1071394-78-9 Enquire
3-Chlorobenzenesulfonic Acid Impurity CS-ZH-12583 20677-52-5 Enquire
3-Hydroxy-2-imino-1(2H)-pyridinesulfonic Acid Monohydrate Impurity CS-T-79400 363619-90-3 Enquire
3-nitro-4-(((tetrahydro-2H-pyran-4-yl)methyl)amino)benzenesu... Impurity CS-O-36797 Not Available Enquire
4-(Acetylamino)-2-aminobenzenesulfonic Acid Impurity CS-T-00338 88-64-2 Enquire
4-(Diazonium)benzenesulfonic Acid, Fluoroborate Salt Impurity CS-T-16977 2145-24-6 Enquire
4,4-Diamino-5,5-dimethyl-2,2-biphenyldisulfonic acid disodiu... Impurity CS-CD-00068 67027-35-4 Enquire
4,4'-Diaminostilbene-2,2'-disulfonic Acid, 95+% Impurity CS-T-52433 81-11-8 Enquire
4,4'-Diisothiocyano-2,2'-dihydrostilbenedisulfonic Acid Impurity CS-T-53323 61481-03-6 Enquire
4,4'-Diisothiocyano-2,2'-dihydrostilbenedisulfonic Acid Diso... Impurity CS-T-53324 150321-88-3 Enquire
4-Acetamido-4-aminostilbene-2,2-disulfonic Acid Disodium Sal... Impurity CS-T-00136 78211-74-2 Enquire
4-Acetamido-4-isothiocyanatostilbene-2,2-disulfonic Acid, So... Impurity CS-T-00227 51023-76-8 Enquire
4-Acetamido-4-nitrostilbene-2,2-disulfonic Acid Disodium Sal... Impurity CS-T-00231 78211-77-5 Enquire
4-Acetamidobenzenesulfonic Acid Impurity CS-T-00142 121-62-0 Enquire
4-acetylamino-3-chloro-5-methyl-benzenesulfonic acid Impurity CS-O-38191 Not Available Enquire
4-amino-2-chloro-5-sulfamoylbenzenesulfonic acid Impurity CS-O-40337 17277-91-7 Enquire
4-Amino-3-chloro-5-methyl-benzenesulfonic acid Impurity CS-O-38192 6387-14-0 Enquire
4-Hydroxybenzenesulfonic acid Impurity CS-DV-02821 98-67-9 Enquire
4-Methylbenzenesulfonic Acid 2-[(4-Hydroxyphenyl)phenylmethy... Impurity CS-T-57538 147169-63-9 Enquire
4-Oxazol-2-yl-2-styryl-biphenyl-2-sulfonic acid (3,4-dimethy... Impurity CS-DU-00365 1226694-75-2 Enquire
4-STYRENESULFONIC ACID, SODIUM SALT HYDR ATE Impurity CS-DV-02910 123333-94-8 Enquire
5-(1-(2-chlorophenyl)-2-methoxy-2-oxoethyl)-3a,4,5,6,7,7a-he... Impurity CS-O-38442 Not Available Enquire
5-(2-amino-1-hydroxyethyl)-2,3-dihydroxybenzenesulfonic acid Impurity CS-O-36355 Not Available Enquire
5-(Acetylamino)-1,3,4-thiadiazole-2-sulfonic Acid Potassium ... Impurity CS-T-93970 2469006-67-3 Enquire
5-Amino-4-hydroxy-3-[(1-sulfo-2-naphthalenyl)azo]naphthalene... Impurity CS-T-65452 65237-05-0 Enquire
7,7-(Carbonylbis(azanediyl))bis(4-hydroxynaphthalene-2-sulfo... Impurity CS-M-58338 134-47-4 Enquire
8-Amino-5-[(4-hydroxyphenyl)amino]-2-naphthalenesulfonic Aci... Impurity CS-T-02767 6357-75-1 Enquire
8-Aminopyrene-1,3,6-trisulfonic Acid trisodium salt Impurity CS-T-03431 196504-57-1 Enquire
8-Isothiocyanatopyrene-1,3,6-trisulfonic Acid Trisodium Salt Impurity CS-T-30101 51987-57-6 Enquire
a,4-Dihydroxy-3-methoxy-α-methyl-benzeneethanesulfonic ... Impurity CS-T-53225 1316753-66-8 Enquire
Afatinib Sulfonic Acid Analog Impurity CS-EO-01233 2283295-16-7 Enquire
Anthraquinone-2,6-disulfonic acid disodium salt Impurity CS-DL-00937 853-68-9 Enquire
Bathocuproinedisulfonic acid disodium salt hydrate Impurity CS-DA-00222 1257642-74-2 Enquire
Bromoaminic acid 1-Amino-4-bromoanthraquinone-2-sulfonic aci... Impurity CS-CD-00127 116-81-4 Enquire
Dehydrothio-p-toluidine-3-monosulfonic acid Impurity CS-CD-00172 130-17-6 Enquire
Demethylpiperazinyl 7-Desoxo 7-Thioxosildenafil Sulfonic Aci... Impurity CS-T-15198 1353018-10-6 Enquire
Dinonylnaphthalenesulfonic acid Impurity CS-DL-00689 25322-17-2 Enquire
Dodecylbenzenesulfonic acid (soft type) (LAS 12) Impurity CS-AZ-00151 27176-87-0 Enquire
Hexane-1-sulfonic acid sodium Impurity CS-BX-03004 2832-45-3 Enquire
Isatin-5-sulfonic Acid Monosodium Salt Monohydrate Impurity CS-T-30070 303137-11-3 Enquire
N-(Methanethiosulfonylethylcarboxamidoethyl)-5 -naphthylamin... Impurity CS-T-32100 359436-83-2 Enquire
Norepinephrine di oxo sulfonic acid impurity Impurity CS-O-40621 Not Available Enquire
Norepinephrine Sulfonic Acid Impurity CS-T-83285 24159-36-2 Enquire
Pioglitazone Sulfonic Acid Impurity Impurity CS-T-60597 625853-73-8 Enquire
Sodium 4-acetylamino-3-methyl-benzene sulfonic acid Impurity CS-O-38190 Not Available Enquire
Tetrahydro-2,5-dioxo-3-furansulfonic Acid, Sodium Salt Impurity CS-T-43676 73464-18-3 Enquire
Tridecafluorohexanesulfonic Acid Potassium Salt Impurity CS-T-45080 3871-99-6 Enquire
Trifluoromethanesulfonic Acid 7-Methoxy-2,2-dimethyl-4-oxo-4... Impurity CS-T-62352 532394-17-5 Enquire


Intermediate

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
(5R-cis)-Toluene-4-sulfonic acid 5-(2,4-difluorophenyl)-5-(1... Intermediate CS-O-31365 149809-43-8 In Stock
1,2-Benzisoxazole-3-methanesulfonic acid sodium salt Intermediate CS-O-30841 73101-64-1 In Stock
1-Hexane sulfonic acid sodium salt for ion pair chromatograp... Intermediate CS-CG-00015 2832-45-3 In Stock
2-(4-Morpholinyl)-1-ethanesulfonic acid Intermediate CS-M-16376 4432-31-9 In Stock
2-Hydroxy-3-mercapto-5-(tert-pentyl)benzenesulfonic acid Intermediate CS-O-57522 ---- Enquire
4-Amino-5-methoxy-2-methylbenzenesulfonic Acid Intermediate CS-T-02878 6471-78-9 In Stock
4-Hydroxy-3-pyridinesulfonic Acid Intermediate CS-T-28572 51498-37-4 In Stock
5-Amino-1-naphthalenesulfonic Acid Intermediate CS-T-03115 84-89-9 In Stock
6-Amidino-2-naphthol methanesulfonic acid Intermediate CS-O-32011 82957-06-0 In Stock
Butane-1,4-disulfonic Acid Disodium Salt Intermediate CS-T-49964 36589-61-4 In Stock
Methanesulfonic Acid Intermediate CS-T-57525 75-75-2 In Stock
Pentafluoroethane sulfonic acid Intermediate CS-BX-02699 354-88-1 Enquire
Perfluoroheptanesulfonic Acid Intermediate CS-T-84634 375-92-8 In Stock
Undecafluoropentanesulfonic Acid Intermediate CS-T-87986 2706-91-4 In Stock
4-Sulfamoylanilinomethanesulfonic Acid Sodium salt Intermediate CS-BX-02788 138-43-2 Enquire
Bathocuproinedisulfonic acid disodium salt Intermediate CS-BX-02791 52698-84-7 Enquire


Fine Chemicals

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
(-)-Camphor-10-sulfonic acid Fine Chemicals CS-O-08450 35963-20-3 In Stock
(1S)-(+)-10-Camphorsulfonic Acid Fine Chemicals CS-T-10098 3144-16-9 In Stock
1,1,2,2,3,3,4,4,5,5,5-Undecafluoro-1-pentanesulfonic Acid So... Fine Chemicals CS-T-84397 630402-22-1 Enquire
1,3-Benzenedisulfonic acid Fine Chemicals CS-O-54123 98-48-6 Enquire
11-Chloroperfluoro-3-oxaundecanesulfonic acid Fine Chemicals CS-O-49816 763051-92-9 Enquire
1-Butanesulfonic acid sodium Fine Chemicals CS-DA-00237 2386-54-1 In Stock
1H,1H,2H,2H-Perfluorodecanesulfonic acid Fine Chemicals CS-ED-00474 39108-34-4 In Stock
1H-Benzimidazole-2-sulfonic acid Fine Chemicals CS-O-08044 40828-54-4 In Stock
1-Heptanesulfonic acid sodium salt Fine Chemicals CS-BL-00001 22767-50-6 Enquire
1-Octanesulfonic acid sodium Fine Chemicals CS-DA-00238 5324-84-5 In Stock
1-Pentanesulfonic Acid Sodium Fine Chemicals CS-DA-00287 207605-40-1 In Stock
1-Propanesulfonic Acid Sodium Salt Fine Chemicals CS-O-54475 14533-63-2 Enquire
2-(isopropylaminocarbonyl) phenylaminosulfonic acid Fine Chemicals CS-O-58651 68289-11-2 Enquire
2-(Perfluorohexyl)ethane-1-Sulfonic Acid Fine Chemicals CS-T-39064 27619-97-2 In Stock
2-(Perfluorohexyl)ethane-1-sulfonic Acid Sodium Salt Fine Chemicals CS-T-84577 27619-94-9 Enquire
2,4,6-Trinitrobenzenesulfonic acid Fine Chemicals CS-DV-01267 2508-19-2 In Stock
2-Cyanoethanesulfonic acid Fine Chemicals CS-O-53042 107-67-5 Enquire
2-Mercaptoethanesulfonic acid Fine Chemicals CS-O-53337 3375-50-6 Enquire
2-Pyridinesulfonic acid Fine Chemicals CS-O-55217 815103-48-7 Enquire
3,3'-dioxo-2,2'-bi-indolylidene-5-sulfonic acid Fine Chemicals CS-O-35042 605-18-5 Enquire
3-[(Ethylamino)methyl]benzenesulfonic acid Fine Chemicals CS-O-58654 25938-58-3 Enquire
4-[(2-hydroxy-1-naphthalenyl) azo]-5-methoxy-2-methylbenzene... Fine Chemicals CS-RS-00127 61660-27-3 In Stock
4-hydroxy-butane-1-sulfonic acid Fine Chemicals CS-O-13870 26978-64-3 In Stock
4-methylbenzenesulfonic acid Fine Chemicals CS-BX-01316 104-15-4 Enquire
5-Chloropyridine-3-sulfonic acid Fine Chemicals CS-O-52293 2358783-64-7 Enquire
7-Hydroxy-1,3,6-naphthalenetrisulfonic acid Fine Chemicals CS-O-53871 ---- Enquire
7-Hydroxy-1,3-naphthalenedisulfonic Acid Fine Chemicals CS-T-28309 118-32-1 In Stock
Ethanesulfonic acid Fine Chemicals CS-BX-02887 594-45-6 Enquire
Hydroxylamine-O-sulfonic acid Fine Chemicals CS-M-57514 2950-43-8 In Stock
o-Cresolsulfonic acid Fine Chemicals CS-ED-41858 7134-04-5 Enquire
o-Toluenesulfonic Acid Fine Chemicals CS-ED-00225 88-20-0 In Stock
Perfluoro(2-((6-chlorohexyl)oxy)ethanesulfonic acid) Fine Chemicals CS-ED-41960 756426-58-1 Enquire
Perfluoroheptanesulfonic Acid Sodium Salt Fine Chemicals CS-O-55149 21934-50-9 Enquire
Perfluorohexadecanesulfonic acid Fine Chemicals CS-O-59769 81735-29-7 Enquire
Perfluorohexane Sulfonic Acid Fine Chemicals CS-ED-00324 355-46-4 In Stock
Perfluorooctadecanesulfonic acid Fine Chemicals CS-O-59770 51604-60-5 Enquire
Perfluorooctanesulfonic acid Fine Chemicals CS-MM-12866 1763-23-1 In Stock
Perfluorotetradecanesulfonic acid Fine Chemicals CS-O-59768 1379460-39-5 Enquire
p-Toluenesulfonic acid Fine Chemicals CS-DV-02873 104-15-4 Enquire
Trifluoromethanesulfonic Acid Fine Chemicals CS-O-30811 1493-13-6 In Stock
(2R,3aR,7aR)-Octahydroindole-2-carboxylic Acid Benzyl Ester ... Fine Chemicals CS-T-94417 760916-37-8 Enquire
(3-Aminophenyl)oxidanesulfonic acid Fine Chemicals CS-O-38788 27991-69-1 Enquire
2-(Methoxy Carbonyl)benzene sulfonic acid Fine Chemicals CS-O-37087 57897-77-5 Enquire
2-(N-Morpholino)ethanesulfonic acid hydrate Fine Chemicals CS-BX-00880 1266615-59-1 Enquire
2-(Piperidin-4-yl)ethane-1-sulfonic acid Fine Chemicals CS-ZB-36666 4944-21-2 Enquire
2,3,6,9-Tetrahydro-1,3-dimethyl-2,6-dioxo-1H-purine-8-sulfon... Fine Chemicals CS-O-39520 5270-31-5 Enquire
2,3-dihydroxy-6-[(1r)-1-hydroxy-2-(methylamino)ethyl]benzene... Fine Chemicals CS-O-38206 Not Available Enquire
2-Amino-5-chlorobenzene-1,3-disulfonic acid Fine Chemicals CS-ED-02041 950-60-7 Enquire
2-Bromoethanesulfonic Acid Sodium Salt Fine Chemicals CS-T-08279 4263-52-9 Enquire
2-Hydroxy-4-methylbenzenesulfonic acid Fine Chemicals CS-ZG-30096 22356-80-5 Enquire
2-Nitrotoluene-4-sulfonic acid Fine Chemicals CS-O-37931 97-06-3 Enquire
3,3'-dioxo-2,2'-bi-indolylidene-5,7'-disulfonic acid Fine Chemicals CS-O-35039 54947-75-0 Enquire
3,4-dichlorobenzenesulfonic acid Fine Chemicals CS-ED-01136 939-95-7 Enquire
3,5-Dichloro-4-methylbenzenesulfonic acid Fine Chemicals CS-O-37842 2225-18-5 Enquire
3-Acetyl Benzene Sulfonic Acid Sodium Salt Fine Chemicals CS-O-33889 67036-57-1 Enquire
3-Amino-7-nitronaphthalene-1,5-disulfonic acid Fine Chemicals CS-MM-11832 17527-17-2 Enquire
3-bromopropane-1-sulfonic acid Fine Chemicals CS-O-48648 73384-82-4 Enquire
3-hydroxy-4-[(2-Methoxy-5-methyl-4-sulfophenyl)azo]-2,7-Naph... Fine Chemicals CS-RS-00128 61660-30-8 Enquire
4-(5-(p-tolyl)-3-(trifluoromethyl)-1H-pyrazol-1-yl)benzenesu... Fine Chemicals CS-O-40867 921617-76-7 Enquire
4-(Acetylamino)-3-methylbenzenesulfonic acid Fine Chemicals CS-O-36599 76382-58-6 Enquire
4,4'-(Diazoamino)dibenzenesulfonic acid Fine Chemicals CS-ED-01351 17596-06-4 Enquire
4,4'-(Hydrazine-1,2-diyl)dibenzenesulfonic acid Fine Chemicals CS-O-38687 732921-44-7 Enquire
4,5-Dihydro-1H-imidazole-2-sulfonic acid Fine Chemicals CS-ED-01843 64205-92-1 Enquire
4-[(2-hydroxy-1-naphthalenyl) azo]-5-methoxy-2-methylbenzene... Fine Chemicals CS-O-35822 779270-03-0 Enquire
4-acetamido-3-chloro-5-methylbenzenesulfonic acid Fine Chemicals CS-O-36600 408508-13-4 Enquire
4-amino-3-((4-((2-(sulfoxy)ethyl)sulfonyl)phenyl)diazenyl)na... Fine Chemicals CS-O-34806 250688-43-8 Enquire
4-Chloro-3-nitrobenzenesulfonic Acid Fine Chemicals CS-T-93330 121-18-6 Enquire
4-Diazobenzenesulfonic acid Fine Chemicals CS-MM-49711 305-80-6 Enquire
4-Tert-butylbenzenesulfonic acid Fine Chemicals CS-BX-00793 1133-17-1 Enquire
6-Isopropyl-3-(4-(4-chlorobenzenesulfonylamino)butyl)azulene... Fine Chemicals CS-ED-02141 129648-96-0 Enquire
8-Anilino-1-naphthalenesulfonic Acid Ammonium Salt Fine Chemicals CS-T-66189 28836-03-5 Enquire
9-fluorenylmethoxycarbonyl chloride-2-sulfonic acid Fine Chemicals CS-O-36601 67827-06-9 Enquire
Benzenesulfonic acid, 4-(acetylamino)-, ethyl ester Fine Chemicals CS-ED-02080 6034-55-5 Enquire
Benzenesulfonic acid, mono-​C10-​13-​alkyl derivs., compds. ... Fine Chemicals CS-O-37917 85480-55-3 Enquire
Butane-1,4-disulfonic acid Fine Chemicals CS-ZI-50089 27665-39-0 In Stock
Isoquinoline-5-sulfonic Acid Fine Chemicals CS-T-56909 27655-40-9 Enquire
Linear alkylbenzenesulfonic acid Fine Chemicals CS-O-40147 68584-22-5 Enquire
Meta toluene sulfonic acid Fine Chemicals CS-ED-00224 617-97-0 Enquire
Poly(styrene sulfonic acid) sodium salt Fine Chemicals CS-O-44383 25704-18-1 Enquire
Xylenesulfonic Acid Sodium Salt Fine Chemicals CS-T-62786 1300-72-7 Enquire


Building Blocks

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
2,4-dinitrobenzenesulfonic acid Building Blocks CS-T-102299 89-02-1 Enquire
2-Diazo-1-naphthol-5-sulfonic Acid Sodium Salt Building Blocks CS-T-102303 2657-00-3 Enquire
3-Pentanesulfonic acid Building Blocks CS-O-48247 51650-30-7 Enquire
4-((2-chloro-4-hydroxyphenyl)diazenyl)benzenesulfonic acid Building Blocks CS-T-94537 253801-34-2 Enquire
4-[Ethyl(3-methylphenyl)amino]-1-butanesulfonic acid Building Blocks CS-O-48036 127531-29-7 Enquire
4-Aminopyridine-3-sulfonic acid Building Blocks CS-O-47138 29452-57-1 Enquire
5-(1,1-Dimethylpropyl)-2-hydroxybenzenesulfonic acid Building Blocks CS-O-57521 752958-44-4 Enquire
8-Aminonaphthalene-1,3,5-trisulfonic acid Building Blocks CS-O-50107 17894-99-4 Enquire
Diazobenzenesulfonic acid Building Blocks CS-ED-41468 2154-66-7 Enquire
Nonafluoro-1-butanesulfonic Acid Building Blocks CS-T-37390 375-73-5 In Stock
Perfluoro-3-oxapentane-sulfonic acid Building Blocks CS-ED-42153 113507-82-7 Enquire
Trifluoro methane sulfonic acid tert amyl ester Building Blocks CS-O-46745 Not Available Enquire
1-Amino-8-naphthol-4-sulfonic Acid Building Blocks CS-T-66259 83-64-7 Enquire
1-Butanesulfonic acid sodium salt monohydrate Building Blocks CS-DA-00233 127791-51-9 Enquire
1-Hexanesulfonic acid sodium salt monohydrate Building Blocks CS-DA-00286 207300-91-2 Enquire
3-(Carbamimidoylthio)-1-propanesulfonic Acid Building Blocks CS-TA-86449 21668-81-5 Enquire
4-(bromomethyl)benzenesulfonic acid Building Blocks CS-ED-01233 82835-61-8 Enquire
4-Hydroxy-2-methylbenzenesulfonic Acid Building Blocks CS-TB-71327 7134-05-6 Enquire
4-Hydroxybenzenesulfonic Acid Ammonium Salt Building Blocks CS-T-78779 856777-15-6 Enquire
5,10,15,20-Tetraphenyl-21H, 23H-porphine-p,p′,p″,p′′′-tetras... Building Blocks CS-BX-00715 652154-11-5 Enquire
6-aminonaphthalene-2-sulfonic acid Building Blocks CS-O-35886 93-00-5 Enquire
6-bromonaphthalene-2-sulfonic acid Building Blocks CS-O-35860 57189-62-5 Enquire
Isatin-5-sulfonic acid sodium salt dihydrate Building Blocks CS-T-95898 207399-16-4 In Stock
Perfluorbutane-1-sulfonic acid 100µg/ml in acetonitrile Building Blocks CS-O-44063 375-73-5 Enquire
Perfluordodecane-1- sulfonic acid 100µg/ml in acetonitrile Building Blocks CS-O-44066 79780-39-5 Enquire
Perfluornonane -1-sulfonic acid 100µg/ml in acetonitrile Building Blocks CS-O-44064 68259-12-1 Enquire
perfluorononanesulfonic acid Building Blocks CS-ED-01671 68259-12-1 Enquire
Perfluorotridecane sulfonic acid Building Blocks CS-O-36511 791563-89-8 Enquire
Perfluoroundecane sulfonic acid Building Blocks CS-ED-01242 749786-16-1 Enquire
Perfluortridecane-1-sulfonic acid 100µg/ml in acetonitrile Building Blocks CS-O-44067 791563-89-8 Enquire
Perfluorundecane-1-sulfonic acid 100µg/ml in acetonitrile Building Blocks CS-O-44065 749786-16-1 Enquire


Pesticide Standards

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Metazachlor Ethane Sulfonic Acid Sodium Salt Pesticide Standards CS-T-81376 1231710-68-1 Enquire