Diphenhydramine hydrochloride

United States Pharmacopeia (USP) Reference Standard

N-(2-Diphenylmethoxyethyl)-N,N-dimethylamine hydrochloride, 2-Diphenylmethoxy-N,N-dimethylethylamine hydrochloride
Empirical Formula (Hill Notation):
C17H21NO · HCl
Número de CAS:
Peso molecular:
MDL number:
PubChem Substance ID:


pharmaceutical primary standard





Featured Industry

Pharmaceutical (small molecule)



SMILES string




InChI key


Gene Information

human ... HRH1(3269)

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General description

This product is provided as delivered and specified by the issuing Pharmacopoeia. All information provided in support of this product, including SDS and any product information leaflets have been developed and issued under the Authority of the issuing Pharmacopoeia.For further information and support please go to the website of the issuing Pharmacopoeia.

Analysis Note

These products are for test and assay use only. They are not meant for administration to humans or animals and cannot be used to diagnose, treat, or cure diseases of any kind.  ​

Other Notes

USP issued SDS can be found here.
Sales restrictions may apply.


Exclamation mark





NONH for all modes of transport

WGK Germany


Flash Point F

Not applicable

Flash Point C

Not applicable

Olabisi Oduwole et al.
The Cochrane database of systematic reviews, 12(12), CD007094-CD007094 (2014-12-24)
Cough causes concern for parents and is a major cause of outpatient visits. It can impact on quality of life, cause anxiety and affect sleep in parents and children. Several remedies, including honey, have been used to alleviate cough symptoms....
Takashi Koyanagi et al.
Xenobiotica; the fate of foreign compounds in biological systems, 44(10), 893-901 (2014-03-22)
1. The pharmacokinetics of acetaminophen (marker of gastric emptying), antipyrine (marker of hepatic metabolic activity and total body water), diazepam (lipophilic and highly distributed), diphenhydramine (hepatic blood flow-limited and alpha-1 acid glycoprotein bound) and ofloxacin (renally eliminated) were evaluated in...
Makiko Kido-Nakahara et al.
The Journal of clinical investigation, 124(6), 2683-2695 (2014-05-09)
In humans, pruritus (itch) is a common but poorly understood symptom in numerous skin and systemic diseases. Endothelin 1 (ET-1) evokes histamine-independent pruritus in mammals through activation of its cognate G protein-coupled receptor endothelin A receptor (ETAR). Here, we have...
Shigeru Hishinuma et al.
Biochemical pharmacology, 91(2), 231-241 (2014-07-30)
Differential binding sites for first- and second-generation antihistamines were indicated on the basis of the crystal structure of human histamine H1 receptors. In this study, we evaluated differences between the thermodynamic driving forces of first- and second-generation antihistamines for human...
Jung Yeon Kim et al.
Biomedical chromatography : BMC, 29(3), 465-474 (2014-08-01)
The purpose of this study was to develop and validate an ultra-performance liquid chromatography method for simultaneous analysis of 20 antihistamines (illegal additives) in dietary supplements. The limits of detection and quantitation of the method ranged from 1.5 to 2.5...

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