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

Famotidine Related Compounds

Stable Isotopes

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Famotidine 13C Stable Isotopes CS-EK-00349 76824-35-6 unlabeled Enquire
Famotidine Acid Methyl Ester-13C3 Stable Isotopes CS-T-102352 Not Available Enquire
Famotidine-13C Stable Isotopes CS-O-02664 76824-35-6(Unlabeled) In Stock
Famotidine-d4 Stable Isotopes CS-O-15224 2707433-64-3 In Stock


API

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Famotidine API CS-O-11647 76824-35-6 In Stock


Metabolite

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Famotidine Sulfoxide Metabolite CS-T-16886 90237-03-9 In Stock


Impurity

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
(2-((diaminomethylene) amino)thiazol-5 yl)methyl carbamimido... Impurity CS-O-43186 772304-31-1 Enquire
(Z)-3-(((2-((diaminomethylene)amino)thiazol-5-yl)methyl)thio... Impurity CS-O-43189 Not Available Enquire
2-(5-(chloromethyl)thiazol-2-yl)guanidine Impurity CS-O-44898 1378820-83-7 Enquire
Famotidine Acid Methyl Ester Impurity CS-T-23422 76824-14-1 In Stock
Famotidine Cyclic Impurity Impurity CS-O-36121 2169078-41-3 Enquire
Famotidine EP Impurity A Impurity CS-ED-00772 124646-10-2 In Stock
Famotidine EP impurity A hydrochloride Impurity CS-T-23415 76833-47-1 In Stock
Famotidine EP impurity B Impurity CS-T-23416 89268-62-2 Enquire
Famotidine EP Impurity B (Dimaleate salt) Impurity CS-EO-03550 109467-08-5 Enquire
Famotidine EP Impurity B (Mandeleate salt) Impurity CS-EO-03549 89268-62-2 (Freebase) Enquire
Famotidine EP Impurity C Hydrochloride Impurity CS-T-16887 76824-17-4 In Stock
Famotidine EP impurity E Impurity CS-T-49330 129083-44-9 In Stock
Famotidine EP Impurity F Impurity CS-T-23419 107880-74-0 In Stock
Famotidine EP impurity G Impurity CS-T-15632 76823-97-7 In Stock
Famotidine EP Impurity I HCl salt Impurity CS-EO-03548 1020719-36-1 (Freebase) Enquire
Famotidine glucose adduct Impurity CS-O-52430 ---- Enquire
Famotidine Impurity 10 HCl Impurity CS-O-44896 1644079-28-6 Enquire
Famotidine Impurity 17 Impurity CS-O-57233 ---- Enquire
FAMOTIDINE IMPURITY C Impurity CS-O-49735 106433-44-7 Enquire
Famotidine Related Compound A Dihydrochloride Impurity CS-T-75625 88061-72-7 In Stock
Famotidine S,S Diguanidino Impurity Impurity CS-O-59968 ---- Enquire
N-sulfamoylacrylimidamide Impurity CS-O-46832 95853-46-6 Enquire
N-Sulphamyl-3-Chloro Propionamidine Hydrochloride Impurity CS-CK-00006 106649-95-0 In Stock
1-(4-(chloromethyl)-4-hydroxy-4,5-dihydrothiazol-2-yl)guanid... Impurity CS-ED-02047 95907-34-9 Enquire
Dediaminosulfonyl Hydroxymethyl Famotidine Impurity CS-T-14687 76823-94-4 Enquire
Famotidine EP Impurity I Hydrochloride Impurity CS-P-06992 1020719-36-1 (free base) Enquire
Famotidine Impurity H Impurity CS-T-93830 106649-96-1 Enquire
Famotidine Impurity I Impurity CS-O-13763 1020719-36-1 Enquire


Nitrosamine

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
2-((2-((carboxymethyl) (nitroso) amino)ethyl)amino)acetic ac... Nitrosamine CS-O-56874 --- Enquire
Famotidine Nitroso Impurity 1 Nitrosamine CS-EO-02836 Not Available Enquire
N-Nitroso Famotidine -II Nitrosamine CS-EO-01247 Not Available Enquire


Secondary Standards

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Famotidine Secondary Standards CS-SS-24035 76824-35-6 Enquire


Therapeutic

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
3-[[[2-[(Diaminomethylene]amino-4-thiazolyl]thio]propionitri... Therapeutic CS-T-16889 76823-93-3 In Stock
Famotidine EP impurity D Therapeutic CS-T-47861 76824-16-3 In Stock