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1706698

USP

Urea

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
Beilstein/REAXYS Number:
635724
MDL number:
MFCD00008022
UNSPSC Code:
41116107
PubChem Substance ID:
329751461
NACRES:
NA.24

grade

pharmaceutical primary standard

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)

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

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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

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.

Storage Class

11 - Combustible Solids

wgk_germany

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Allantoin
United States Pharmacopeia, 40(6), 130-130 (2019)
Urea
United States Pharmacopeia, 40(4), 4555-4555 (2020)
Fluorouracil
United States Pharmacopeia, 39(3), 1954-1954 (2020)
A mechanically and electrically self-healing supercapacitor.
Hua Wang et al.
Advanced materials (Deerfield Beach, Fla.), 26(22), 3638-3643 (2014-02-21)
Oliver C Witard et al.
Brain, behavior, and immunity, 39, 211-219 (2013-10-15)
The present study examined whether a high protein diet prevents the impaired leukocyte redistribution in response to acute exercise caused by a large volume of high-intensity exercise training. Eight cyclists (VO2max: 64.2±6.5mLkg(-1)min(-1)) undertook two separate weeks of high-intensity training while
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