Clearsynth is a leading innovator in pharmaceutical reference standards, offering high-quality Reference Standards for Sulfoxide, including both pharmacopeial and non-pharmacopeial impurities, metabolites, stable isotope products, and nitrosamines (N-NO products). Our Sulfoxide 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 Sulfoxide-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.
Our Sulfoxide-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.
Sulfoxide Related Compounds
Stable Isotopes
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| Albendazole Sulfoxide-d7 | Stable Isotopes | CS-T-93854 | 54029-12-8 (Unlabeled) | Enquire |
| Albendazole-d3 Sulfoxide | Stable Isotopes | CS-O-02843 | 1448346-38-0 | In Stock |
| Aldicarb sulfoxide-[13C2,d3] | Stable Isotopes | CS-I-00489 | 1261170-77-7 | Enquire |
| Aldicarb Sulfoxide-13C3 | Stable Isotopes | CS-T-96275 | Not Available | Enquire |
| Arbidol-d6 Sulfoxide | Stable Isotopes | CS-T-99374 | Not Available | Enquire |
| Cefadroxil Sulfoxide-d4 | Stable Isotopes | CS-T-99338 | Not Available | Enquire |
| Cimetidine Sulfoxide-d3 | Stable Isotopes | CS-T-99326 | Not Available | Enquire |
| Clindamycin Sulfoxide-13C D3 | Stable Isotopes | CS-EQ-00268 | 22431-46-5(unlabelled) | Enquire |
| Demeton-S Sulfoxide-d10 | Stable Isotopes | CS-T-98992 | Not Available | Enquire |
| Demeton-S-methyl Sulfoxide-d6 | Stable Isotopes | CS-T-95363 | 301-12-2(Unlabeled) | Enquire |
| Fenthion Sulfoxide-d6 | Stable Isotopes | CS-T-98978 | Not Available | Enquire |
| Fenthoxon Sulfoxide (Dimethylphosphate-d6) | Stable Isotopes | CS-T-96711 | Not Available | Enquire |
| Lapatinib-d7 Sulfoxide Dihydrochloride | Stable Isotopes | CS-T-100108 | Not Available | Enquire |
| Levomepromazine-D3 Sulfoxide | Stable Isotopes | CS-T-97353 | 7606-29-3 (Unlabelled) | Enquire |
| Lincomycin-13C,D3 Sulfoxide | Stable Isotopes | CS-T-96520 | Not Available | Enquire |
| L-Methionine Sulfoxide,13C | Stable Isotopes | CS-T-102916 | 3226-65-1(Unlabelled) | Enquire |
| Methiocarb-d3 Sulfoxide | Stable Isotopes | CS-T-99176 | Not Available | Enquire |
| Monepantel sulfoxide-D5 | Stable Isotopes | CS-W-00536 | Not Available | Enquire |
| Prochlorperazine Sulfoxide-d8 | Stable Isotopes | CS-B-00346 | Not Available | Enquire |
| S-​Methyl-​L-​cysteine Sulfoxide-d3 | Stable Isotopes | CS-T-102871 | 6853-87-8(Unlabelled) | Enquire |
| Saroglitazar Sulfoxide D4 Mg Salt | Stable Isotopes | CS-O-32962 | Not Available | Enquire |
| Saroglitazar Sulfoxide-d4 | Stable Isotopes | CS-O-16431 | ---- | In Stock |
| Saroglitazar Sulfoxide-d5 | Stable Isotopes | CS-T-97178 | Not Available | Enquire |
| Sutezolid sulfoxide D3 | Stable Isotopes | CS-O-48617 | 168828-60-2 (Unlabelled) | Enquire |
| Tazarotene Sulfoxide-d8 | Stable Isotopes | CS-T-99021 | Not Available | Enquire |
| Tazarotenic Acid-d8 Sulfoxide | Stable Isotopes | CS-T-99022 | Not Available | Enquire |
| Teneligliptin-d8 Sulfoxide | Stable Isotopes | CS-T-96778 | Not Available | Enquire |
| Thiofanox Sulfoxide-d3 | Stable Isotopes | CS-T-104073 | 39184-27-5(unlablled) | Enquire |
| Vamidothion-d6 Sulfoxide | Stable Isotopes | CS-T-98938 | Not Available | Enquire |
| Zaltoprofen-d7 Sulfoxide | Stable Isotopes | CS-T-99052 | Not Available | Enquire |
Metabolite
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| Arbidol Sulfoxide | Metabolite | CS-P-07043 | 151455-33-3 | Enquire |
| Brexpiprazole sulfoxide | Metabolite | CS-O-16172 | 1191900-51-2 | In Stock |
| Cangrelor Sulfoxide | Metabolite | CS-O-47444 | 1890216-14-4 | Enquire |
| Cephalexin S-Sulfoxide | Metabolite | CS-P-07522 | 74708-55-7 | Enquire |
| Cevimeline Sulfoxide (RRR) | Metabolite | CS-O-47104 | 124751-37-7 | Enquire |
| Clethodim S-Methyl Sulfoxide | Metabolite | CS-TB-00513 | 116007-12-6 | Enquire |
| Clindamycin Sulfoxide (Mixture of Isomers) | Metabolite | CS-O-05845 | 22431-46-5 | In Stock |
| Demeton-S Sulfoxide | Metabolite | CS-O-20045 | 2496-92-6 | In Stock |
| Diltiazem Sulfoxide | Metabolite | CS-O-32533 | 370094-12-5 | In Stock |
| Famotidine Sulfoxide | Metabolite | CS-T-16886 | 90237-03-9 | In Stock |
| Lamivudine Sulfoxide | Metabolite | CS-EO-00142 | 1235712-40-9 | In Stock |
| N-Desmethyl Diltiazem Sulfoxide | Metabolite | CS-O-46915 | Not Available | In Stock |
| Pantoprazole Sulfoxide N-Oxide | Metabolite | CS-O-14408 | ---- | In Stock |
| Phorate Oxon Sulfoxide | Metabolite | CS-T-93850 | 2588-05-8 | Enquire |
| Promethazine Sulfoxide | Metabolite | CS-O-10037 | 7640-51-9 | In Stock |
| Protionamide Sulfoxide | Metabolite | CS-O-05890 | 62178-61-4 | In Stock |
| Sulfoxide,N-oxide - Lurbinectedin | Metabolite | CS-O-45120 | Not Available | Enquire |
| Sutezolid sulfoxide | Metabolite | CS-O-48616 | 168828-60-2 | Enquire |
| Teneligliptin Sulfoxide | Metabolite | CS-O-38508 | 2478551-43-6 | Enquire |
Impurity
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| (S)-Dimethenamid Hydroxycysteine Sulfoxide impurity | Impurity | CS-O-47002 | Not Available | Enquire |
| Albendazole sulfoxide | Impurity | CS-W-00068 | 54029-12-8 | Enquire |
| Axitinib Sulfoxide | Impurity | CS-O-13261 | 1347304-18-0 | In Stock |
| Canagliflozin DIsulfOXIDE impurity | Impurity | CS-O-42767 | Not Available | Enquire |
| Cangrelor Sulfoxide Tetrasodium salt | Impurity | CS-EO-03393 | 1890216-14-4 (Freebase) | Enquire |
| Carbocisteine Sulfoxide (Mixture of diastereomers) | Impurity | CS-T-10465 | 5439-87-2 | In Stock |
| Cefadroxil R-Sulfoxide | Impurity | CS-O-53214 | ---- | Enquire |
| Cefadroxil S-Sulfoxide | Impurity | CS-O-53213 | ---- | Enquire |
| Cefdinir Sulfoxide | Impurity | CS-T-10739 | 934986-48-8 | Enquire |
| Cefixime Sulfoxide | Impurity | CS-P-08167 | 1335555-87-7 | Enquire |
| Cis Cevimeline Sulfoxide | Impurity | CS-O-47930 | Not Available | Enquire |
| Clindamycin 2-Phosphate Sulfoxide | Impurity | CS-T-51185 | 1228573-90-7 | In Stock |
| Clindamycin 2-Phosphate Sulfoxide Isomer A | Impurity | CS-O-33317 | 887402-20-2 | Enquire |
| Clindamycin 2-Phosphate Sulfoxide Isomer B | Impurity | CS-O-33318 | 887402-21-3 | Enquire |
| Clindamycin Palmitate Sulfoxide | Impurity | CS-T-51184 | 1123211-65-3 | In Stock |
| Clindamycin Sulfoxide (R-Isomer) | Impurity | CS-O-45065 | 887607-53-6 | Enquire |
| Clindamycin Sulfoxide (S-Isomer) | Impurity | CS-O-45066 | 887607-49-0 | Enquire |
| Cosyntropin sulfoxide | Impurity | CS-O-43972 | 62673-38-5 | Enquire |
| Deacylated sulfoxide - Lurbinectedin | Impurity | CS-O-45121 | Not Available | Enquire |
| Desmopressin Sulfoxide-I | Impurity | CS-O-43054 | Not Available | Enquire |
| Desmopressin Sulfoxide-II | Impurity | CS-O-43055 | Not Available | Enquire |
| Desmopressin Sulfoxide-III | Impurity | CS-O-43052 | Not Available | Enquire |
| Desmopressin Sulfoxide-IV | Impurity | CS-O-43053 | Not Available | Enquire |
| Dothiepin Sulfoxide ( E-isomer) | Impurity | CS-O-46691 | 42046-35-5 | Enquire |
| Lincomycin Sulfoxide | Impurity | CS-T-95954 | 22083-92-7 | Enquire |
| L-Methionine Sulfoxide | Impurity | CS-T-57600 | 3226-65-1 | In Stock |
| Metopimazine Sulfoxide | Impurity | CS-T-35569 | 18181-99-2 | In Stock |
| Mono-sulfoxide-Sugammadex Epimer I | Impurity | CS-O-32912 | 2412953-11-6 | In Stock |
| Mono-sulfoxide-Sugammadex Epimer II | Impurity | CS-O-32913 | 2412953-12-7 | In Stock |
| Perazine Sulfoxide | Impurity | CS-T-39055 | 20627-44-5 | Enquire |
| Phenothiazine Sulfoxide | Impurity | CS-ED-42021 | 1207-71-2 | Enquire |
| Piperacillin Sulfoxide | Impurity | CS-O-59498 | ---- | Enquire |
| Prochlorperazine di-N-oxide sulfoxide | Impurity | CS-O-60699 | 75207-95-3 | Enquire |
| Rivaroxaban Sulfoxide | Impurity | CS-O-35646 | 2197189-38-9 | Enquire |
| Sugammadex Diastereomer 1 Sulfoxide Sodium Salt | Impurity | CS-O-56856 | 2412953-13-8 | Enquire |
| Sugammadex Diastereomer 2 Sulfoxide Sodium Salt | Impurity | CS-O-56854 | 2412953-14-9 | Enquire |
| Sugammadex Disulfoxide Impurity | Impurity | CS-O-32980 | Not Available | Enquire |
| Sugammadex octasulfoxide | Impurity | CS-O-49187 | 1202448-71-2 | Enquire |
| Sugammadex Sulfoxide Impurity | Impurity | CS-O-55984 | 2411298-90-1 | Enquire |
| Sulfoxide - Lurbinectedin | Impurity | CS-O-45118 | Not Available | Enquire |
| Tazarotenic Acid Sulfoxide | Impurity | CS-T-43198 | 603952-64-3 | Enquire |
| Teneligliptin (R) Sulfoxide | Impurity | CS-O-54922 | ---- | Enquire |
| Teneligliptin Sulfoxide Hydrochloride | Impurity | CS-O-49058 | 2478551-43-6 (Freebase) | Enquire |
| Thiothixene Sulfoxide | Impurity | CS-O-56585 | 47681-53-8 | Enquire |
| Ticagrelor Sulfoxide Diastereoisomer-I | Impurity | CS-O-34125 | ---- | Enquire |
| Ticagrelor Sulfoxide Diastereoisomer-II | Impurity | CS-O-34126 | ---- | Enquire |
| Trametinib Dimethyl Sulfoxide | Impurity | CS-O-15521 | 1187431-43-1 | In Stock |
| Trans Cevimeline Sulfoxide | Impurity | CS-O-47931 | Not Available | Enquire |
| Trimeprazine Sulfoxide | Impurity | CS-ED-00811 | 10071-07-5 | In Stock |
| Vortioxetine Sulfoxide Hydrochloride | Impurity | CS-O-49449 | 2236051-10-6 | Enquire |
| (-)-Biotin Sulfoxide | Impurity | CS-T-49115 | 3376-83-8 | Enquire |
| (+)-Biotin (+)-Sulfoxide | Impurity | CS-T-49116 | 10406-89-0 | Enquire |
| (Z)-montelukast sulfoxide | Impurity | CS-O-40815 | Not Available | Enquire |
| 4'-oxideprochlorperazine sulfoxide | Impurity | CS-ED-00762 | 879495-68-8 | Enquire |
| 5-Hydroxy-clethodim Sulfoxide | Impurity | CS-T-26991 | 111031-08-4 | Enquire |
| Cefpodoxime Proxetil sulfoxide | Impurity | CS-O-13519 | Not Available | Enquire |
| Cephalexin Sulfoxide | Impurity | CS-T-50480 | 56193-21-6 | Enquire |
| Clethodim Sulfoxide | Impurity | CS-T-13088 | 111031-14-2 | Enquire |
| Clindamycin Sulfoxide palmitate isomer | Impurity | CS-O-35317 | Not Available | Enquire |
| Desmopressin Sulfoxide | Impurity | CS-P-01279 | Not Available | Enquire |
| Methiocarb Sulfoxide | Impurity | CS-T-32129 | Not Available | Enquire |
| Mono Sulfoxide Sugammadex | Impurity | CS-O-16540 | Not Available | Enquire |
| Pidotimod sulfoxide | Impurity | CS-O-42607 | Not Available | Enquire |
| Promethazine Sulfoxide N-Oxide Hydrochloride | Impurity | CS-T-94177 | 1135334-50-7 | Enquire |
| Sugammadex Octa disulfoxide | Impurity | CS-O-32905 | Not Available | Enquire |
| Sugammadex Octa sulfoxide | Impurity | CS-O-32904 | Not Available | Enquire |
| Trabectedin impurity B (sulfoxide) | Impurity | CS-O-44037 | 631920-73-5 | Enquire |
| Vamidothion Sulfoxide | Impurity | CS-T-62757 | 20300-00-9 | Enquire |
Fine Chemicals
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| Methylphenothiazine Sulfoxide | Fine Chemicals | CS-O-58096 | 2234-09-5 | Enquire |
Nitrosamine
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| N-Nitroso Vortioxetine Sulfoxide | Nitrosamine | CS-EO-02730 | ----- | In Stock |
| Promethazine Sulfoxide N-Nitroso Impurity | Nitrosamine | CS-O-50265 | Not Available | In Stock |
| Ticagrelor nitroso sulfoxide impurity | Nitrosamine | CS-O-47377 | Not Available | Enquire |
Secondary Standards
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| Dimethyl sulfoxide(Sec standard) | Secondary Standards | CS-ER-03082 | 67-68-5 | Enquire |
Stable Isotope Reagent
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| Diphenyl sulfoxide-d10 | Stable Isotope Reagent | CS-O-54190 | 1173021-80-1 | Enquire |
Therapeutic
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| Vortioxetine Sulfoxide | Therapeutic | CS-P-01235 | 1429908-35-9 | Enquire |
NMR Solvent
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| Dimethyl Sulfoxide D6 - 10g Pack | NMR Solvent | CS-T-53699-10G | 2206-27-1 | Enquire |
| Dimethyl Sulfoxide D6 - 50g Pack | NMR Solvent | CS-T-53699-50G | 2206-27-1 | Enquire |
| Dimethyl Sulfoxide D6 - 50g Pack | NMR Solvent | CS-BX-01140 | 2206-27-1 | Enquire |
| Dimethyl Sulfoxide D6 with 0.03 v/v% TMS - 50g Pack | NMR Solvent | CS-BX-01141 | 2206-27-1 | Enquire |
| Dimethyl Sulfoxide D6 with 0.03 v/v% TMS - 50g Pack | NMR Solvent | CS-T-40753-50G | 2206-27-1 | Enquire |
| Dimethyl Sulfoxide-D6 + 0.03% TMS NMR Solvent 50ml Pack | NMR Solvent | CS-T-40753-50ML | 2206-27-1 | Enquire |
| Dimethyl Sulfoxide-d6 with 0.03 v/v% TMS - 10g Pack | NMR Solvent | CS-T-40753-10G | 2206-27-1 | Enquire |
Peptide
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| Carbetocin Sulfoxide I | Peptide | CS-O-41240 | 221464-32-0 | In Stock |
| Carbetocin sulfoxide II | Peptide | CS-O-41241 | 221464-33-1 | In Stock |
Reagents
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| Ethylene oxide in dimethyl sulfoxide (DMSO) | Reagents | CS-O-57585 | 75-21-8 | Enquire |
Analytical Standard
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| Albendazole Sulfoxide D3-AR Grade | Analytical Standard | CS-O-02843-10MG | 1448346-38-0 | Enquire |
| Albendazole Sulfoxide D3-AR Grade-10 ppm/ACN | Analytical Standard | CS-O-02843-1ML | 1448346-38-0 | Enquire |
Building Blocks
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| trans-2,3-Diphenylcyclopropylmethyl Phenyl Sulfide Sulfoxide | Building Blocks | CS-TB-34921 | 131758-71-9 | Enquire |