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CAS 51481-61-9

CAS 51481-61-9 matches 0 EU annex records across Annex II–VI of Regulation 1223/2009.

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Chemical identity and properties

PubChem 2D chemical structure for CAS 51481-61-9
CAS 51481-61-9PubChem CID 2756

Cimetidine

Cimetidine is a member of the class of guanidines that consists of guanidine carrying a methyl substituent at position 1, a cyano group at position 2 and a 2-{[(5-methyl-1H-imidazol-4-yl)methyl]sulfanyl}ethyl group at position 3. It is a H2-receptor antagonist that inhibits the production of acid in stomach. It has a role as an analgesic, a H2-receptor antagonist, an anti-ulcer drug, a P450 inhibitor and an adjuvant. It is a nitrile, an aliphatic sulfide, a member of guanidines and a member of imidazoles. — ChEBI

IUPAC name
1-cyano-2-methyl-3-[2-[(5-methyl-1H-imidazol-4-yl)methylsulfanyl]ethyl]guanidine
Molecular formula
C10H16N6S
Molecular weight
252.34 g/mol
Exact mass
252.11571571 Da
XLogP3
0.4
Topological polar surface area
114.0 Ų
Hydrogen-bond donors
3
Hydrogen-bond acceptors
4
Covalent units
1
Defined stereocentres
0

Also known as

UlcedinEureceptorGastrometUlcimetAcinilUlcomedinaTametinCimal
16 more reported names
AcibilinCimetagDyspametEdaleneUlcedineUlcometCimetidinaCimetumTratulUlhysSKF-92334Tagamet HbTagamet Hb 200CimetidinumMetracinUlcerfen
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External database identifiers

Retrieved from NIH PubChem on 2026-08-31 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.

Records for CAS 51481-61-9

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How CAS 51481-61-9 is used on this site

CAS 51481-61-9 is the Chemical Abstracts Service identifier used to pin this page to a specific substance. In the current dataset, 0 EU annex records share this identifier, which helps you cross-check whether the same substance appears under one regulatory context or several.

Use this page when a supplier specification, SDS or raw-material dossier gives you CAS 51481-61-9 and you need to see every linked Annex II–VI record in one place. The entry cards above are the quickest route to concentration limits, warnings, annex placement and product-type conditions.