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Merck
CN

1217909

USP

Diphenhydramine citrate

United States Pharmacopeia (USP) Reference Standard

Synonym(s):

Benzhydramine citrate

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About This Item

Empirical Formula (Hill Notation):
C17H21NO · C6H8O7
CAS Number:
88637-37-0
Molecular Weight:
447.48
MDL number:
MFCD08061593
UNSPSC Code:
41116107
EC Number:
289-432-0
NACRES:
NA.24

Key Documents

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SMILES string

N(CCOC(c2ccccc2)c1ccccc1)(C)C.OC(CC(=O)O)(CC(=O)O)C(=O)O

InChI key

SPCKHVPPRJWQRZ-UHFFFAOYSA-N

InChI

1S/C17H21NO.C6H8O7/c1-18(2)13-14-19-17(15-9-5-3-6-10-15)16-11-7-4-8-12-16;7-3(8)1-6(13,5(11)12)2-4(9)10/h3-12,17H,13-14H2,1-2H3;13H,1-2H2,(H,7,8)(H,9,10)(H,11,12)

grade

pharmaceutical primary standard

API family

diphenhydramine

manufacturer/tradename

USP

application(s)

pharmaceutical (small molecule)

format

neat

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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.

Application

Diphenhydramine citrate USP reference standard, intended for use in specified quality tests and assays as specified in the USP compendia. Also, for use with USP monographs such as:
  • Acetaminophen and Diphenhydramine Citrate Tablets
  • Diphenhydramine Citrate
  • Diphenhydramine Citrate and Ibuprofen Tablets
  • Orphenadrine Citrate

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

Sales restrictions may apply.

pictograms

Exclamation mark
GHS07

signalword

Warning

hcodes

H302,H319

Hazard Classifications

Acute Tox. 4 Oral - Eye Irrit. 2

Storage Class

11 - Combustible Solids

flash_point_f

Not applicable

flash_point_c

Not applicable

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