(5-Ethyl-1H-imidazol-4-yl)methanol hydrochloride
- CAS
- 38603-74-6
- Formula
- C6H11ClN2O
- MW
- 162.62 g/mol
ZX-020216
Impurity reference standards
Cimetidine impurity standards
For Cimetidine, the Zemixal catalogue holds 20 impurity and reference standards that support release testing, stability programmes and regulatory dossiers. Counted by type, there are 11 pharmacopoeial impurities, 1 nitrosamine and 1 isotope-labelled standard.
20reference materials
11pharmacopoeial
1nitrosamines
1isotope labelled
Batches are supplied with a certificate of analysis, and the supporting spectra can be sent ahead of a purchase order so your QA team can review them. Typical uses are method development and validation, relative response factor work, forced degradation studies and the impurity sections of ANDA, DMF or CEP filings. For nitrosamine risk evaluation, the N-nitroso standards allow confirmatory LC-MS testing against the acceptable intake limits.
By impurity type
Pharmacopoeial11EP, USP, BP or JP named impurities
Nitrosamines1N-nitroso impurities for ICH M7 work
Isotope labelled1Deuterated, 13C or 15N internal standards
Counts are based on product names. One compound can fall into more than one type.
All Cimetidine reference materials
1–20 of 20 standards
(E,E)-1,1'-((((5-Methyl-1H-imidazole-2,4-diyl)bis(methylene))bis(sulfanediyl))bis(ethane-2,1-diyl))bis(2-cyano-3-methylguanidine)
- CAS
- 182685-55-8
- Formula
- C16H26N10S2
- MW
- 422.6 g/mol
ZX-023944
Questions
Cimetidine impurities, answered
What Cimetidine reference materials are available?
The catalogue currently lists 20 compounds for Cimetidine, including 11 pharmacopoeial impurities, 1 nitrosamine and 1 isotope-labelled standard. Each product page shows the CAS number where one is assigned, the structure, formula and molecular weight.
What documents come with a Cimetidine impurity standard?
A certificate of analysis travels with every lot. On request we share the characterisation set, usually 1H-NMR, mass spectrum, HPLC purity and IR, and for some materials TGA or water content. Ask for the data before ordering if your QA team needs to review it.
Can Zemixal make a Cimetidine impurity that is not listed?
Often yes. Send the structure, name or CAS number with the quantity you need and our sourcing team checks custom synthesis options, usually from 10 mg up to gram scale, with a quoted lead time.
Do you supply Cimetidine nitrosamine impurities?
Yes. 1 N-nitroso compound is listed for Cimetidine. They are used for confirmatory testing and method validation in line with ICH M7 and the nitrosamine guidance from the major regulators.
Are isotope-labelled Cimetidine standards available?
Yes. 1 stable-isotope labelled compound is listed, suitable as internal standards for LC-MS bioanalysis and trace impurity quantitation.