Metformin Hydrochloride: reference standards and impurities
Metformin is an oral glucose-lowering drug from the biguanide group; dosage forms and reference standards usually use metformin hydrochloride.
- INN
- Metformin Hydrochloride
- CAS
- 1115-70-4
- Molecular formula
- C4H11N5·HCl
- Molecular weight
- 165.62 g/mol
- Items in catalog
- 3
- Manufacturers
- USP, Merck, Clearsynth
API standards 2
Manufacturer: USP
Cat. No. 1396309
200 mg
Manufacturer: Merck
Cat. No. PHR8598
1 g
Impurities 1
Manufacturer: Clearsynth
Cat. No. CS-M61723
10 mg / 25 mg / 50 mgAny pack size on request
About Metformin Hydrochloride
Tests according to Ph. Eur. and USP monographs require the corresponding pharmacopoeial reference standards; related impurities control requires impurity standards, including cyanoguanidine.
Below are metformin and impurity standards from different manufacturers.
Synonyms: Metformin hydrochloride; N,N-dimethylimidodicarbonimidic diamide hydrochloride
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