MilliporeSigma
  • U4884
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U4884

Sigma-Aldrich

Urea

meets USP testing specifications

Synonym(s):
Carbamide, Carbonyldiamide
Linear Formula:
NH2CONH2
CAS Number:
Molecular Weight:
60.06
Beilstein:
635724
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.75

Agency

USP/NF
meets USP testing specifications

Quality Level

Assay

98.0-102.0%

form

solid

mp

132-135 °C (lit.)

solubility

H2O: soluble 480 g/L at 20 °C

density

1.335 g/mL at 25 °C (lit.)

application(s)

pharmaceutical (small molecule)

SMILES string

NC(N)=O

InChI

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

InChI key

XSQUKJJJFZCRTK-UHFFFAOYSA-N

Gene Information

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1 of 4

This Item
PHR14061706698NIST2141
Urea meets USP testing specifications

Sigma-Aldrich

U4884

Urea

Urea Pharmaceutical Secondary Standard; Certified Reference Material

Supelco

PHR1406

Urea

Urea United States Pharmacopeia (USP) Reference Standard

USP

1706698

Urea

Urea NIST® SRM® 2141

NIST2141

Urea

assay

98.0-102.0%

assay

-

assay

-

assay

-

form

solid

form

-

form

-

form

crystals

mp

132-135 °C (lit.)

mp

132-135 °C (lit.)

mp

132-135 °C (lit.)

mp

132-135 °C (lit.)

solubility

H2O: soluble 480 g/L at 20 °C

solubility

-

solubility

-

solubility

-

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.)

application(s)

pharmaceutical (small molecule)

application(s)

pharmaceutical (small molecule)

application(s)

pharmaceutical (small molecule)

application(s)

pharmaceutical (small molecule)

Application

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.

Storage Class Code

11 - Combustible Solids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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