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CAS 88637-37-0

CAS 88637-37-0 matches 1 EU annex record across Annex II–VI of Regulation 1223/2009.

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Chemical identity and properties

PubChem 2D chemical structure for CAS 88637-37-0
CAS 88637-37-0PubChem CID 174697

Diphenhydramine Citrate

IUPAC name
2-benzhydryloxy-N,N-dimethylethanamine;2-hydroxypropane-1,2,3-tricarboxylic acid
Molecular formula
C23H29NO8
Molecular weight
447.5 g/mol
Exact mass
447.18931688 Da
Topological polar surface area
145.0 Ų
Hydrogen-bond donors
4
Hydrogen-bond acceptors
9
Covalent units
2
Defined stereocentres
0

Also known as

Diphenhydramine citrate [USP]4OD433S209Diphenhydramine citrate (USP)2-(Diphenylmethoxy)-N,N-dimethylethylamine citrate (1:1)(2-(Diphenylmethoxy)ethyl)dimethylammonium dihydrogen 2-hydroxypropane-1,2,3-tricarboxylateRefChem:588810289-432-02-(Benzhydryloxy)-N,N-dimethylethanamine 2-hydroxypropane-1,2,3-tricarboxylate
16 more reported names
Diphenhydramine (citrate)Ethanamine, 2-(diphenylmethoxy)-N,N-dimethyl-, 2-hydroxy-1,2,3-propanetricarboxylate (1:1)UNII-4OD433S209C23H29NO8Ethanamine, 2-(diphenylmethoxy)-N,N-dimethyl-, 2-hydroxy-1,2,3-propanetricarboxylate (1:1); Diphenhydramine citrateEINECS 289-432-02-(Benzhydryloxy)-N,N-dimethylethanamine2-hydroxypropane-1,2,3-tricarboxylateDIPHENHYDRAMINE CITRATE [MART.]DIPHENHYDRAMINE CITRATE [VANDF]2-benzhydryloxy-N,N-dimethylethanamine,2-hydroxypropane-1,2,3-tricarboxylic acidDIPHENHYDRAMINE CITRATE [USP-RS]DIPHENHYDRAMINE CITRATE [WHO-DD]DIPHENHYDRAMINE CITRATE [ORANGE BOOK]DIPHENHYDRAMINE CITRATE [USP MONOGRAPH]2-benzhydryloxy-N,N-dimethyl-ethanamine;citric acid2-Hydroxypropane-1,2,3-tricarboxylic acid--2-(diphenylmethoxy)-N,N-dimethylethan-1-amine (1/1)
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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 88637-37-0

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How CAS 88637-37-0 is used on this site

CAS 88637-37-0 is the Chemical Abstracts Service identifier used to pin this page to a specific substance. In the current dataset, 1 EU annex record shares 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 88637-37-0 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.