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U4884

Sigma-Aldrich

Urea

meets USP testing specifications

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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

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
U063151456U6504
Urea meets USP testing specifications

Sigma-Aldrich

U4884

Urea

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

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U0631

Urea

Premium Grade
Urea BioUltra, for molecular biology, 99% (T)

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Premium Grade
Urea suitable for electrophoresis

Sigma-Aldrich

U6504

Urea

-
form

solid

form

powder, crystals or pellets

form

powder or crystals

form

powder or 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

H2O: 5 M at 20 °C, clear, colorless

solubility

H2O: 8 M at 20 °C, clear, colorless

solubility

H2O: 100 mg/mL

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)

diagnostic assay manufacturing

application(s)

-

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

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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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
L Li et al.
Cell death and differentiation, 22(7), 1081-1093 (2014-12-20)
P53 is critically important in preventing oncogenesis but its role in inflammation in general and in the function of inflammatory macrophages in particular is not clear. Here, we show that bone marrow-derived macrophages exhibit endogenous p53 activity, which is increased
Marco Benevento et al.
Nature communications, 5, 5613-5613 (2014-12-11)
The ectopic expression of Oct4, Klf4, c-Myc and Sox2 (OKMS) transcription factors allows reprogramming of somatic cells into induced pluripotent stem cells (iPSCs). The reprogramming process, which involves a complex network of molecular events, is not yet fully characterized. Here
G L French et al.
Lancet (London, England), 2(8551), 117-119 (1987-07-18)
Tuberculostearic acid, a structural component of Mycobacterium tuberculosis, was identified by gas chromatography/mass spectrometry with selected ion monitoring in cerebrospinal fluid (CSF) from 13 patients with proven and 8 out of 9 patients with suspected tuberculous meningitis; the negative result
A mechanically and electrically self-healing supercapacitor.
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