Skip to Content
MilliporeSigma
All Photos(2)

Documents

U1250

Sigma-Aldrich

Urea

ReagentPlus®, ≥99.5%, pellets

Synonym(s):

Carbamide, Carbonyldiamide

Sign Into View Organizational & Contract Pricing
All Photos(2)

About This Item

Linear Formula:
NH2CONH2
CAS Number:
57-13-6
Molecular Weight:
60.06
Beilstein/REAXYS Number:
635724
EC Number:
200-315-5
MDL number:
MFCD00008022
UNSPSC Code:
12352100
PubChem Substance ID:
57654718
NACRES:
NA.21

Quality Level

300

product line

ReagentPlus®

assay

≥99.5%

form

pellets

mp

132-135 °C (lit.)

solubility

H2O: 8 M

density

1.335 g/mL at 25 °C (lit.)

SMILES string

NC(N)=O

InChI

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

InChI key

XSQUKJJJFZCRTK-UHFFFAOYSA-N

Gene Information

human ... CA1(759) , CA2(760)
rat ... Ppm1a(24666)

Looking for similar products? Visit Product Comparison Guide

Related Categories

General description

Urea is a chaotropic agent and is used for protein denaturation. It disturbs the hydrogen bonds in the secondary, tertiary and quaternary structure of proteins. Urea can also disturb hydrogen bonds present in DNA secondary structure.

Application

Urea has been used as a protein denaturing agent.
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.

Legal Information

ReagentPlus is a registered trademark of Merck KGaA, Darmstadt, Germany

Storage Class

11 - Combustible Solids

wgk_germany

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, type N95 (US)

Choose from one of the most recent versions:

Certificates of Analysis (COA)

Lot/Batch Number
SLCK9644
SLCH6516
SLCG4742
SLCD3955
SLCB9837

Don't see the Right Version?

If you require a particular version, you can look up a specific certificate by the Lot or Batch number.

Search for a COA

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

Customers Also Viewed

Slide 1 of 4

1 of 4

Urea 8 M (after reconstitution with 16 mL high purity water)

Supelco

U4883

Urea

Urea BioXtra, pH 7.5-9.5 (20 °C, 5 M in H2O)

Sigma-Aldrich

U0631

Urea

Urea for biochemistry

Millipore

1.08488

Urea

Urea crystalline, EMPROVE® ESSENTIAL, Ph. Eur., BP, ChP, JP, USP

SAFC

1.08486

Urea

Sheehan D.
Physical Biochemistry: Principles and Applications (2013)
Protein carbonyl determination by a rhodamine B hydrazide-based fluorometric assay.
Georgiou C D, et al.
Redox Biology, 17, 236-245 (2018)
Protein and cell wall polysaccharide carbonyl determination by a neutral pH 2, 4-dinitrophenylhydrazine-based photometric assay.
Georgiou C D, et al.
Redox Biology, 17, 128-142 (2018)
Christos D Georgiou et al.
Redox biology, 17, 128-142 (2018-04-24)
A new 2,4-dinitrophenylhydrazine (DNPH)-based photometric assay is developed for the quantification of carbonyls in protein samples from any biological source by protein carbonyl-DNPH hydrazone formation at acidic pH in the presence of denaturing urea, and subsequent hydrazone solubilization in the
Gurudayal et al.
Nano letters, 15(6), 3833-3839 (2015-05-06)
Photoelectrochemical water splitting half reactions on semiconducting photoelectrodes have received much attention but efficient overall water splitting driven by a single photoelectrode has remained elusive due to stringent electronic and thermodynamic property requirements. Utilizing a tandem configuration wherein the total
View All Related Papers

Articles

Enzymatic Assay of Proteinase K with Hemoglobin Substrate

Proteinase K (EC 3.4.21.64) activity can be measured spectrophotometrically using hemoglobin as the substrate. Proteinase K hydrolyzes hemoglobin denatured with urea, and liberates Folin-postive amino acids and peptides. One unit will hydrolyze hemoglobin to produce color equivalent to 1.0 μmol of tyrosine per minute at pH 7.5 at 37 °C (color by Folin & Ciocalteu's Phenol Reagent).

Protocols

Enzymatic Assay of Urease from Jack Beans

To standardize a procedure for the enzymatic assay of Urease, from Jack Beans

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service