Merck
  • 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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This Item
17066981706698U1250
Urea meets USP testing specifications

Sigma-Aldrich

U4884

Urea

Urea United States Pharmacopeia (USP) Reference Standard

USP

1706698

Urea

Urea United States Pharmacopeia (USP) Reference Standard

USP

1706698

Urea

Urea ReagentPlus®, ≥99.5%, pellets

Sigma-Aldrich

U1250

Urea

assay

98.0-102.0%

assay

-

assay

-

assay

≥99.5%

form

solid

form

-

form

-

form

pellets

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

H2O: 8 M

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)

-

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

13 - Non 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

Certificate of Analysis

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Certificate of Origin

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