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Merck

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

Key Documents

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Product Name

Urea, United States Pharmacopeia (USP) Reference Standard

InChI key

XSQUKJJJFZCRTK-UHFFFAOYSA-N

InChI

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

SMILES string

NC(N)=O

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

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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.  ​

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.

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.

Other Notes

Sales restrictions may apply.

Storage Class

11 - Combustible Solids

flash_point_f

Not applicable

flash_point_c

Not applicable

Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

1706698-200MG:

jan

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Allantoin
United States Pharmacopeia, 40(6), 130-130 (2019)
Fluorouracil
United States Pharmacopeia, 39(3), 1954-1954 (2020)
Urea
United States Pharmacopeia, 40(4), 4555-4555 (2020)
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
A mechanically and electrically self-healing supercapacitor.
Hua Wang et al.
Advanced materials (Deerfield Beach, Fla.), 26(22), 3638-3643 (2014-02-21)
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