Clearsynth is a leading innovator in pharmaceutical reference standards, offering high-quality Reference Standards for Naproxen, including both pharmacopeial and non-pharmacopeial impurities, metabolites, stable isotope products, and nitrosamines (N-NO products). Our Naproxen 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 Naproxen-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 Naproxen-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.
Naproxen Related Compounds
Stable Isotopes
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| "rac-Naproxen 13C,d3" | Stable Isotopes | CS-T-59129 | 1216704-11-8 | Enquire |
| (±)-Naproxen-d3 | Stable Isotopes | CS-W-00255 | 958293-77-1 | In Stock |
| (S)-Naproxen Ethyl-d5 Ester | Stable Isotopes | CS-T-83449 | 1346617-42-2 | Enquire |
| (S)-Naproxen-d3 | Stable Isotopes | CS-T-59127 | 1094102-82-5 | In Stock |
| Naproxen 13 C D3 | Stable Isotopes | CS-EO-02553 | Not Available | Enquire |
| Naproxen-1,3,4,5,7,8-d6 | Stable Isotopes | CS-DZ-00511 | 958293-99-7 | Enquire |
| Naproxen-13Cd3 | Stable Isotopes | CS-O-10120 | 1261392-52-2 | In Stock |
| Rac Naproxen D3 Ethyl ester | Stable Isotopes | CS-O-48831 | 1122399-97-6 | Enquire |
| rac Naproxen-d3 (Methoxy-d3) | Stable Isotopes | CS-O-02891 | 958293-79-3 | In Stock |
| rac Naproxen-d3 Methyl Ester | Stable Isotopes | CS-T-59132 | 1189511-76-9 | Enquire |
| rac O-Desmethyl Naproxen D3 | Stable Isotopes | CS-T-52257 | 1122399-99-8 | Enquire |
| rac-5-Chloro Naproxen-13CD3 | Stable Isotopes | CS-T-97695 | Not Available | Enquire |
| rac-Naproxen Methyl Ester-13C,d3 | Stable Isotopes | CS-T-102195 | Not Available | Enquire |
API Standards
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| (S)-Naproxen | API Standards | CS-O-30671 | 22204-53-1 | In Stock |
| Naproxen Sodium | API Standards | CS-O-11178 | 26159-34-2 | In Stock |
Metabolites
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| (S)-O-Desmethyl Naproxen | Metabolites | CS-T-52256 | 52079-10-4 | In Stock |
| 2-Acetyl-6-methoxynaphthalene | Metabolites | CS-O-10938 | 3900-45-6 | In Stock |
| O-Desmethyl Naproxen | Metabolites | CS-O-07948 | 52079-10-4 | In Stock |
Impurities
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| (R)-5-Bromo Naproxen | Impurities | CS-T-49824 | 92471-85-7 | Enquire |
| (R)-5-Chloro Naproxen | Impurities | CS-T-50861 | 92471-86-8 | Enquire |
| (S)-5-Bromo Naproxen | Impurities | CS-T-49825 | 84236-26-0 | In Stock |
| (S)-5-Chloro Naproxen | Impurities | CS-T-50862 | 89617-86-7 | Enquire |
| (S)-Naproxen 2-Propyl Ester | Impurities | CS-T-59134 | 156967-24-7 | In Stock |
| 2,2'-(7,7'-dimethoxy-[1,1'-binaphthalene]-3,3'-diyl)dipropio... | Impurities | CS-O-37783 | Not Available | Enquire |
| 2-Bromo-6-methoxynaphthalene (Naproxen Impurity N) | Impurities | CS-O-10943 | 5111-65-9 | In Stock |
| 6-(3-hydroxy-2,2-dimethylpropoxy) Naproxen | Impurities | CS-O-43804 | 2601735-81-1 | Enquire |
| 6-(3-hydroxy-2,2-dimethylpropoxy) Naproxen Sodium salt impur... | Impurities | CS-O-54030 | 2601735-81-1 (Freebase) | In Stock |
| Desmethylnaproxen | Impurities | CS-ZG-21943 | 60756-73-2 | Enquire |
| Naproxen 1,2-Propylene Glycol Esters (Mixture of Isomers) | Impurities | CS-EO-01568 | Not Available | Enquire |
| Naproxen Glycerol Ester Impurity | Impurities | CS-EO-01569 | 38835-17-5 | In Stock |
| Naproxen chloride | Impurities | CS-EL-00024 | 51091-84-0 | Enquire |
| Naproxen EP Impurity H | Impurities | CS-O-11996 | 5111-66-0 | In Stock |
| Naproxen EP Impurity J | Impurities | CS-T-32436 | 21388-17-0 | In Stock |
| Naproxen EP Impurity M | Impurities | CS-T-32586 | 93-04-9 | In Stock |
| Naproxen Impurity 1 | Impurities | CS-P-08721 | Not Available | Enquire |
| Naproxen Impurity 11 | Impurities | CS-P-08754 | 116883-61-5 | Enquire |
| Naproxen Impurity 5 | Impurities | CS-O-56929 | 358369-77-4 | Enquire |
| Naproxen Impurity 6 | Impurities | CS-EO-01440 | Not Available | Enquire |
| Naproxen Impurity F | Impurities | CS-DH-00018 | 31220-35-6 | In Stock |
| Naproxen Impurity K | Impurities | CS-O-10941 | 77301-42-9 | In Stock |
| Naproxen Sodium impurity E | Impurities | CS-O-15561 | 26159-35-3 | In Stock |
| rac Naproxen 2-Propyl Ester | Impurities | CS-T-83596 | 68641-85-0 | Enquire |
| rac-5-Bromo Naproxen | Impurities | CS-T-49823 | 27655-95-4 | Enquire |
| Rac-5-Bromo Naproxen Sodium salt | Impurities | CS-O-56882 | 89586-52-7 | Enquire |
| rac-5-Chloro Naproxen | Impurities | CS-T-50859 | 60424-17-1 | Enquire |
EP Standards
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| Naproxen (Racemic) (Y0000399) | EP Standards | CS-EG-02563 | 23981-80-8 | Enquire |
Intermediates
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| Dehydronaproxen | Intermediates | CS-T-51779 | 27602-79-5 | Enquire |
| Demethyl Naproxen Sulfate | Intermediates | CS-T-51871 | 1246819-61-3 | Enquire |
| Naproxen | Intermediates | A010340 | 22204-53-1 | Enquire |
Glucuronides
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| (R)-Naproxen Acyl-ß-D-glucuronide | Glucuronides | CS-T-59126 | 112828-15-6 | Enquire |
| (R)-Naproxen Acyl-ß-D-glucuronide Benzyl Ester | Glucuronides | CS-T-59131 | 946517-36-8 | Enquire |
| (S)-Naproxen Acyl-beta-D-glucuronide | Glucuronides | CS-T-59130 | 41945-43-1 | In Stock |
| (S)-Naproxen Iso-acyl-β-D-glucuronide | Glucuronides | CS-T-59133 | 219476-92-3 | Enquire |
| Demethyl Naproxen Acyl-β-D-glucuronide | Glucuronides | CS-T-51870 | 91488-21-0 | Enquire |
| Naproxen Acyl-b-D-glucuronide | Glucuronides | CS-O-07949 | 41945-43-1 | Enquire |
Fine Chemicals
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| 6-Methoxy-2-naphthyl acetic Acid | Fine Chemicals | CS-O-05854 | 23981-47-7 | In Stock |