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Clearsynth is a leading innovator in pharmaceutical reference standards, offering high-quality Reference Standards for Naphthalene, including both pharmacopeial and non-pharmacopeial impurities, metabolites, stable isotope products, and nitrosamines (N-NO products). Our Naphthalene 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 Naphthalene-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.

Naphthalene Related Compounds

Stable Isotopes

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
(1S)-N-(3S)-1-Azabicyclo[2.2.2]oct-3-yl-1,2,3,4-tetrahydro-1... Stable Isotopes CS-T-100820 1330266-39-1 Enquire
1,2,3,4-Tetrahydro-5-(2-oxiranylmethoxy)-(2R,3S)-rel-2,3-nap... Stable Isotopes CS-T-102038 Not Available Enquire
1,2,3,4-Tetrahydronaphthalene-13C6 Stable Isotopes CS-T-97880 Not Available Enquire
1,4,6,7-Tetramethylnaphthalene-D3 Stable Isotopes CS-T-102035 Not Available Enquire
1,5-Diaminonaphthalene-[15N2] Stable Isotopes CS-I-00505 Not Available Enquire
1,5-Diaminonaphthalene-13C6 Stable Isotopes CS-T-98858 Not Available Enquire
1,5-Dihydroxynaphthalene-d6 Stable Isotopes CS-T-95375 83-56-7(Unlabeled) Enquire
1,8-Dinitronaphthalene-d6 Stable Isotopes CS-T-96585 1346598-02-4 Enquire
1-Bromo-α-benzyl-2-naphthalenemethanol-d7 Stable Isotopes CS-T-101792 Not Available Enquire
2-(4-Bromophenyl-2,3,5,6-d4)naphthalene Stable Isotopes CS-O-54828 1359833-53-6 Enquire
2,3-Dihydroxy-6-methyl-7-(phenylmethyl)-4-propyl-1-naphthale... Stable Isotopes CS-T-101502 Not Available Enquire
2-Ethoxynaphthalene-1-carboxylic Acid-d5 Stable Isotopes CS-T-101425 Not Available Enquire
2-Isopropoxy-1-naphthalenemethanamine-d7 Stable Isotopes CS-T-100123 Not Available Enquire
2-Naphthaleneacetic acid, 6-(methoxy-d3)-a-methyl-, methyl-d... Stable Isotopes CS-O-47977 Not Available Enquire
2-Naphthalenesulfonic acid, hydrate-d7 Stable Isotopes CS-O-59244 312623-89-5 Enquire
5-Methoxy-1-(methoxymethoxy)-2-methyl-naphthalene-d3 Stable Isotopes CS-T-101147 Not Available Enquire
6-Methoxy-2-Naphthaleneacetic acid-d3 Stable Isotopes CS-O-13778 1189427-82-4 In Stock
8-fluoro-Naphthalene-1,2,3,4,5,6,7-d7 Stable Isotopes CS-O-59503 22526-77-8 Enquire
a-Methyl-1-naphthaleneacetic Acid-d3 Ethyl Ester Stable Isotopes CS-T-102680 138492-91-8(Unlabelled) Enquire
a-Methyl-1-naphthaleneacetic Acid-d3 Methyl Ester Stable Isotopes CS-T-101103 Not Available Enquire
Atovaquone-d4 (Naphthalene-d4) Stable Isotopes CS-O-06425 2070015-14-2 In Stock
N-[(2E)-6,6-Dimethyl-2-hepten-4-yn-1-yl]-N,4-dimethyl-1-naph... Stable Isotopes CS-T-100402 Not Available Enquire
N-[(2E)-6,6-Dimethyl-2-hepten-4-yn-1-yl]-N-methyl-2-naphthal... Stable Isotopes CS-T-100403 Not Available Enquire
N-Nitroso N-Des 1-methyl naphthalene Terbinafine-d3 Stable Isotopes CS-O-54794 ---- Enquire
rac trans-1,2-Dihydroxy-1,2-dihydronaphthalene-d6 Stable Isotopes CS-T-95374 771-16-4(Unlabeled) Enquire


Metabolite

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
2-Acetyl-6-methoxynaphthalene Metabolite CS-O-10938 3900-45-6 In Stock
2-Naphthalenesulfinic acid sodium Metabolite CS-H-00515 63735-42-2 Enquire


Impurity

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
(2E,2'E)-N,N'-(Naphthalene-1,4-diylbis(methylene))bis(N,6,6-... Impurity CS-O-54524 ---- Enquire
(6S,7R)-5,6,7,8-Tetrahydro-1,6,7-naphthalenetriol Impurity CS-O-59149 685850-87-7 Enquire
(Diethoxyphosphoryl)methyl naphthalene-1-sulfonate Impurity CS-O-60345 145980-33-2 Enquire
(E)-2-methyl-3-(3,7,11,15-tetramethylhexadeca-2,14-dien-1-yl... Impurity CS-O-47349 Not Available Enquire
1-(2,3-Dichloropropoxy)naphthalene Impurity CS-O-45956 2267999-96-0 Enquire
1,4,6-Trichloronaphthalene Impurity CS-O-54842 2437-54-9 Enquire
1,5-Diaminonaphthalene Impurity CS-T-52419 2243-62-1 In Stock
1-Bromo-6-methoxynaphthalene Impurity CS-BX-02697 83710-62-7 Enquire
2-Bromo-6-methoxynaphthalene (Naproxen Impurity N) Impurity CS-O-10943 5111-65-9 In Stock
2-Methyl-3-((2E,6E)-3,7,11,15-tetramethylhexadeca-2,6-dien-1... Impurity CS-O-47347 Not Available Enquire
5,6,7,8-Tetrahydronaphthalene-1,6,7-Triol Impurity CS-O-40936 344764-57-4 Enquire
6,6 -Oxybis-2-naphthalenesulfonic Acid Disodium Salt Impurity CS-T-38394 61551-82-4 Enquire
6,6'-Dimethoxy-2,2'-binaphthalene Impurity CS-T-19721 29619-45-2 In Stock
Bexarotenate tetrahydronaphthalene impurity Impurity CS-O-31828 6683-48-3 In Stock
cis-5,6,7,8-Tetrahydro-1,6,7-naphthalenetriol Impurity CS-O-36215 35697-16-6 Enquire
N-(2-Aminoethyl)-1,2,3,4-Tetrahydronaphthalene-1-Carboxamide Impurity CS-MM-61581 84460-89-9 In Stock
Naphthalene-1,4-diyl diacetate Impurity CS-O-56545 5697-00-7 Enquire
Naphthalene-2,6-dione Impurity CS-O-60259 613-20-7 Enquire
(αR)-α-Methyl-N-[[3-(trifluoromethyl)phenyl]methyl... Impurity CS-T-58698 1229225-42-6 Enquire
(1S)-[1,1'-Binaphthalene]-2,2'-diol Impurity CS-T-49109 18531-99-2 Enquire
(Z)-2-Methyl-3-(3,7,11,15-tetramethylhexadec-2-en-1-yl)napht... Impurity CS-O-40973 Not Available Enquire
(αR)-N-[3-[3-(Difluoromethyl)phenyl]propyl]-α-methyl-1-napht... Impurity CS-T-91367 1025064-41-8 Enquire
(βR,dR,1S,2S)-1,2-Dihydro-β,d,6-trihydroxy-2-methyl-1-naphth... Impurity CS-T-53145 136590-28-8 Enquire
1,4-Dimethylnaphthalene Impurity CS-T-53627 571-58-4 Enquire
2-((3S,E)-3-Hydroperoxy-3,7,11,15-tetramethylhexadec-1-en-1-... Impurity CS-O-35844 Not Available Enquire
2-(2-(5-(dimethylamino)-N-methylnaphthalene-1-sulfonamido)et... Impurity CS-O-37531 Not Available Enquire
2,3-Dibromonaphthalene Impurity CS-M-08382 13214-70-5 Enquire
2,6-Dimethylnaphthalene Impurity CS-T-53631 581-42-0 Enquire
2-Butyl-6-methoxynaphthalene Impurity CS-T-09761 701270-26-0 Enquire
2-Chloronaphthalene Impurity CS-DL-00639 91-58-7 Enquire
2-Desmethyltetrahydrofuran-methylnaphthalene Nafronyl Impurity CS-T-89159 115025-98-4 Enquire
2-Methoxy-6, 9-Dimethyl-3-Methylenedecahydro-1-Oxacyclopenta... Impurity CS-O-35139 Not Available Enquire
2-methyl-3-((1E,3E)-3,7,11,15-tetramethylhexadeca-1,3-dien-1... Impurity CS-O-36734 Not Available Enquire
4-Bromo-1-naphthalenecarboxylic acid Impurity CS-DV-02630 16650-55-8 Enquire
6-Bromo-1,1,4,4,7-pentamethyl-1,2,3,4-tetrahydronaphthalene Impurity CS-O-10623 119999-22-3 Enquire
7-Methoxy-N-[2-(7-methoxy-1-naphthalenyl)ethyl]-1-naphthalen... Impurity CS-T-57541 1385018-57-4 Enquire
Na-(2-Naphthalenesulfonylglycyl)-4-amidino-D,L-phenylalanine... Impurity CS-T-59089 86125-48-6 Enquire
N-methyl-N-[3-hydroxy-3-phenyl-propyl]naphthalene-1-methanam... Impurity CS-O-33701 98977-94-7 Enquire


Intermediate

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
(R)-[1,1'-Binaphthalene]-2,2'-diylbis[1,1-diphenyl-1,1'-phos... Intermediate CS-BX-02500 94041-16-4 In Stock
1-(Chloromethyl)naphthalene Intermediate CS-DK-00293 86-52-2 In Stock
1-Naphthalenemethanol Intermediate CS-AC-12093 4780-79-4 In Stock
2-(2,4-difluorophenylamino)-5-hydroxynaphthalene-1,4-dione Intermediate CS-O-55409 2022163-72-8 Enquire
2-(4-chlorophenyl)-5-hydroxynaphthalene-1,4-dione Intermediate CS-O-55403 2648736-24-5 Enquire
2-(4-chlorophenylamino)-8-hydroxynaphthalene-1,4-dione Intermediate CS-O-55411 2351883-15-1 Enquire
2-(4-fluorophenoxy)-5-hydroxynaphthalene-1,4-dione Intermediate CS-O-55398 1803187-65-6 Enquire
2-(4-fluorophenoxy)-8-hydroxynaphthalene-1,4-dione Intermediate CS-O-55397 1803187-66-7 Enquire
2-(4-fluorophenyl)-5-hydroxynaphthalene-1,4-dione Intermediate CS-O-55402 1192354-80-5 Enquire
2-(4-fluorophenylamino)-5-hydroxynaphthalene-1,4-dione Intermediate CS-O-55408 192652-24-7 Enquire
2-(4-methoxyphenoxy)-5-hydroxynaphthalene-1,4-dione Intermediate CS-O-55399 1803187-82-7 Enquire
2-(4-methoxyphenoxy)-8-hydroxynaphthalene-1,4-dione Intermediate CS-O-55396 1803187-83-8 Enquire
2-(4-methoxyphenylamino)-5-hydroxynaphthalene-1,4-dione Intermediate CS-O-55404 881015-74-3 Enquire
2-(4-methoxyphenylamino)-8-hydroxynaphthalene-1,4-dione Intermediate CS-O-55410 395661-16-2 Enquire
2-(benzo[d][1,3]dioxol-5-yloxy)-5-hydroxynaphthalene-1,4-dio... Intermediate CS-O-55400 2769128-97-2 Enquire
2-bromo-5-hydroxynaphthalene-1,4-dione Intermediate CS-O-55394 69008-03-03 Enquire
3-carboxynaphthalene-2-diazonium bromide Intermediate CS-O-51795 68160-26-9 Enquire
5-Amino-1-naphthalenesulfonic Acid Intermediate CS-T-03115 84-89-9 In Stock
5-hydroxy-2-(4-methoxyphenyl)naphthalene-1,4-dione Intermediate CS-O-55401 28785-83-3 Enquire
7-Fluoronaphthalene-1,3-diol Intermediate CS-O-47533 2460027-79-4 Enquire
ethyl 5-(4-methoxyphenyl)naphthalene-1-carboxylate Intermediate CS-O-55421 1215856-72-6 Enquire
methyl 5-(4-fluorophenyl)naphthalene-1-carboxylate Intermediate CS-O-55420 ---- Enquire
methyl 5-(4-methoxyphenyl)naphthalene-1-carboxylate Intermediate CS-O-55419 ---- Enquire


Fine Chemicals

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
1,1-(Naphthalene-1,4-diyl)bis(N-methylmethanamine) Fine Chemicals CS-O-54341 ---- Enquire
1,1-(Naphthalene-1,5-diyl)bis(N-methylmethanamine) Fine Chemicals CS-O-54338 2847776-06-9 Enquire
1,4,6,7-Tetrachloronaphthalene Fine Chemicals CS-O-54843 55720-43-9 Enquire
1,4-Bis(chloromethyl)naphthalene Fine Chemicals CS-O-54339 6586-89-6 Enquire
1,5-Bis(chloromethyl)naphthalene Fine Chemicals CS-O-54340 1733-76-2 Enquire
1-Naphthaleneacetamide Fine Chemicals CS-M-57961 86-86-2 In Stock
2-(Chloromethyl)naphthalene Fine Chemicals CS-M-03623 2506-41-4 Enquire
2,3-Dichloro-2,3-dihydronaphthalene-1,4-dione Fine Chemicals CS-O-54134 1013-00-9 Enquire
2-[(3-Methyl-2-buten-1-yl)oxy]-1,4-naphthalenedione Fine Chemicals CS-O-57861 42164-69-2 Enquire
5,6,7,8-Tetrahydronaphthalene-2-carbonitrile Fine Chemicals CS-O-54863 17104-67-5 Enquire
5-Hydroxy-2,3-dihydronaphthalene-1,4-dione Fine Chemicals CS-O-57606 6312-53-4 Enquire
7-Bromo-1-chloronaphthalene Fine Chemicals CS-O-49996 90947-99-2 Enquire
7-bromo-1-phenylnaphthalene Fine Chemicals CS-ED-41951 1345860-65-2 Enquire
7-Hydroxy-1,3,6-naphthalenetrisulfonic acid Fine Chemicals CS-O-53871 ---- Enquire
8-Aminonaphthalene-1,3,6-trisulphonic acid disodium hydrate Fine Chemicals CS-CE-00644 5398-34-5 In Stock
Naphthalene Fine Chemicals CS-T-59081 91-20-3 In Stock
Naphthalene sulphonate Fine Chemicals CS-O-02005 130-14-3 In Stock
Octafluoronaphthalene Fine Chemicals CS-DE-01326 313-72-4 In Stock
Sodium 6-Hydroxynaphthalene-2-Sulfonate Fine Chemicals CS-M-57254 135-76-2 Enquire
(8-hydroxy-N-((S)quinuclidin-3-yl)-5,6,7,8-tetrahydronaphtha... Fine Chemicals CS-O-36170 1227162-74-4 Enquire
1,2,3,4-tetrahydronaphthalene-2,6-diamine dihydrochloride Fine Chemicals CS-ZB-07018 861333-04-2 Enquire
1,5-naphthalene diisocyanate Fine Chemicals CS-T-93512 3173-72-6 Enquire
1-Amino-2-methylnaphthalene Fine Chemicals CS-ED-01977 2246-44-8 Enquire
1-Benzyloxy-5-hydroxynaphthalene Fine Chemicals CS-TA-28775 109972-84-1 Enquire
2-Bromonaphthalene-1-carboxylic Acid Fine Chemicals CS-TA-76889 17542-05-1 Enquire
2-Methylnaphthalene Fine Chemicals CS-T-58427 91-57-6 Enquire
2-Naphthalenesulfonamide, N-[2-(acetyloxy)ethyl]-6-hydroxy-N... Fine Chemicals CS-ZG-98466 70210-08-1 Enquire
3-hydroxy-4-[(2-Methoxy-5-methyl-4-sulfophenyl)azo]-2,7-Naph... Fine Chemicals CS-RS-00128 61660-30-8 Enquire
8-Anilino-1-naphthalenesulfonic Acid Ammonium Salt Fine Chemicals CS-T-66189 28836-03-5 Enquire
N-[(3S)-1-Azabicyclo[2.2.2]octan-3-yl]-5,6-dihydronaphthalen... Fine Chemicals CS-ZG-41974 1227162-75-5 Enquire
Naphthalene-2,6-dicarboxylic acid Fine Chemicals CS-M-03322 1141-38-4 Enquire
N-Methyl-2-naphthalenemethanamine Fine Chemicals CS-O-40558 76532-33-7 Enquire


"NMR and Deuterated Solvents, Stable Isotopes"

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Naphthalene-d8 "NMR and Deuterated Solvents, Stable Isotopes" CS-O-15212 1146-65-2 In Stock


Building Blocks

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
1-Nitronaphthalene Building Blocks CS-DK-00292 86-57-7 In Stock
2,3,6,7-Naphthalenetetramine Building Blocks CS-ED-41752 31656-47-0 Enquire
2,3-Naphthalenedione Building Blocks CS-O-48206 4939-92-8 Enquire
8-Aminonaphthalene-1,3,5-trisulfonic acid Building Blocks CS-O-50107 17894-99-4 Enquire
Naphthalene-1-diazonium tetrafluoroborate Building Blocks CS-ED-41531 28912-93-8 Enquire
1,2,3-Trimethylnaphthalene Building Blocks CS-ED-01416 879-12-9 Enquire
1-cyano-3,4-dihydronaphthalene Building Blocks CS-O-37029 219921-94-5 Enquire
Methyl 2-(bromomethyl)naphthalene-1-carboxylate Building Blocks CS-ED-01234 2417-76-7 Enquire


Deuterated Reagents

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
1-CHLORO-4-(METHOXY-D3) NAPHTHALENE Deuterated Reagents CS-O-42425 10443-43-3 (unlabelled) Enquire


Pesticide Standards

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
1-Iodonaphthalene Pesticide Standards CS-DJ-00075 90-14-2 In Stock
Sodium 1-Naphthaleneacetate Pesticide Standards CS-O-55003 61-31-4 Enquire


Reagents

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
5,6-Dihydro-6-imino-5-oxo-1-naphthalenesulfonyl chloride Reagents CS-O-57706 138863-74-8 Enquire


Stable Isotope Reagent

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
1-(4-chlorophenyl-2,3,5,6-d4)naphthalene Stable Isotope Reagent CS-O-49262 24382-97-6 (Unlabelled) Enquire
1-(p-Chlorophenyl)Naphthalene-d11 Stable Isotope Reagent CS-O-50471 24382-97-6 (Unlabelled) In Stock
1-Nitronaphthalene-d7 Stable Isotope Reagent CS-C-00519 80789-77-1 In Stock
2-Bromo-6-phenylnaphthalene D11 Stable Isotope Reagent CS-O-52626 22082-94-6 (Unlabelled) Enquire
2-Bromonaphthalene-d7 Stable Isotope Reagent CS-O-49885 1359833-48-9 Enquire
3-Bromo-1-phenylnaphthalene D11 Stable Isotope Reagent CS-O-52627 1629220-00-3 (Unlabelled) Enquire