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Urea

Name: Urea
Brand: USP

United States Pharmacopeia (USP) Reference Standard

Synonym(s):

Carbamide, Carbonyldiamide

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About This Item

Linear Formula:

NH₂CONH₂

CAS Number:

57-13-6

Molecular Weight:

60.06

UNSPSC Code:

41116107

NACRES:

NA.24

PubChem Substance ID:

329751461

MDL number:

MFCD00008022

Beilstein/REAXYS Number:

635724

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Properties

grade

pharmaceutical primary standard

agency

USP

API family

urea

manufacturer/tradename

USP

mp

132-135 °C (lit.)

density

1.335 g/mL at 25 °C (lit.)

application(s)

pharmaceutical (small molecule)
pharmaceutical

format

neat

storage temp.

15-25°C

SMILES string

NC(N)=O

InChI

1S/CH4N2O/c2-1(3)4/h(H4,2,3,4)

InChI key

XSQUKJJJFZCRTK-UHFFFAOYSA-N

Description

General description

Find answers to frequently asked questions on USP products in USP FAQs.

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

Urea 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:

Urea C 13
Urea Compounded Irrigation
Fluorouracil Cream
Allantoin
Fluorouracil

Used for the denaturation of proteins and as a mild solubilization agent for insoluble or denatured proteins. Useful for renaturing proteins from samples already denatured with 6 M guanidine chloride such as inclusion bodies. May be used with guanidine hydrochloride and dithiothreitrol (DTT) in the refolding of denatured proteins into their native or active form.

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.

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This Item	U4884	NIST2152	56180
USP 1706698 Urea	Sigma-Aldrich U4884 Urea	NIST2152 Urea	Supelco 56180 Urea
description United States Pharmacopeia (USP) Reference Standard	description meets USP testing specifications	description NIST^® SRM^® 2152, combustion calorimetric standard	description analytical standard
grade pharmaceutical primary standard	grade -	grade certified reference material	grade analytical standard
manufacturer/tradename USP	manufacturer/tradename -	manufacturer/tradename NIST^®	manufacturer/tradename -
application(s) pharmaceutical (small molecule)	application(s) pharmaceutical (small molecule)	application(s) clinical testing	application(s) cleaning products cosmetics food and beverages forensics and toxicology personal care veterinary
format neat	format -	format -	format neat
API family urea	API family -	API family -	API family -
density 1.335 g/mL at 25 °C (lit.)	density 1.335 g/mL at 25 °C (lit.)	density 1.335 g/mL at 25 °C (lit.)	density 1.335 g/mL at 25 °C (lit.)

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Storage Class

11 - Combustible Solids

Flash Point (°F)

Not applicable

Flash Point (°C)

Not applicable

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