Skip to Content

很抱歉，目前系统维护中。在此期间，网站下单功能无法使用。给您带来不便，深表歉意。如需其他帮助，请联系客户联络中心：400 620 3333。

Merck
CN
All Photos(3)

Key Documents

View All Documentation

U0631

Sigma-Aldrich

Urea

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

Synonym(s):

Carbamide, Carbonyldiamide

Sign Into View Organizational & Contract Pricing

Select a Size

500 G
CN¥1,303.68
1 KG
CN¥1,738.93
5 KG
CN¥4,964.53

CN¥1,303.68

Please contact Customer Service for Availability
Request a Bulk Order
All Photos(3)

Select a Size

Change View
500 G
CN¥1,303.68
1 KG
CN¥1,738.93
5 KG
CN¥4,964.53

About This Item

Linear Formula:
NH2CONH2
CAS Number:
57-13-6
Molecular Weight:
60.06
Beilstein:
635724
EC Number:
200-315-5
MDL number:
MFCD00008022
UNSPSC Code:
12352111
PubChem Substance ID:
24900617
NACRES:
NA.31
application(s):
diagnostic assay manufacturing

CN¥1,303.68

Please contact Customer Service for Availability
Request a Bulk Order

product line

BioXtra

Assay

98.5-101.5%

form

powder, crystals or pellets

impurities

≤0.005% Phosphorus (P)
≤0.1% Insoluble matter

ign. residue

≤0.1%

pH

7.5-9.5 (20 °C, 5 M in H2O)

mp

132-135 °C (lit.)

solubility

H2O: 5 M at 20 °C, clear, colorless

density

1.335 g/mL at 25 °C (lit.)

anion traces

chloride (Cl-): ≤0.05%
sulfate (SO42-): ≤0.05%

Looking for similar products? Visit Product Comparison Guide

Related Categories

Compare Similar Items

View Full Comparison

Show Differences

1 of 4

This Item
15604RDD034PHR1406
Urea BioXtra, pH 7.5-9.5 (20 °C, 5 M in H2O)

U0631

Urea

Urea puriss., meets analytical specification of Ph. Eur., BP, USP, 99.0-100.5%, 99.0-101.0% (calc. on dry substance)

15604

Urea

Urea free-flowing, Redi-Dri™, Bioreagent, ≥98%

RDD034

Urea

Urea Pharmaceutical Secondary Standard; Certified Reference Material

PHR1406

Urea

assay

98.5-101.5%

assay

99.0-100.5%, 99.0-101.0% (calc. on dry substance)

assay

≥98%

assay

-

application(s)

diagnostic assay manufacturing

application(s)

-

application(s)

-

application(s)

pharmaceutical (small molecule)

solubility

H2O: 5 M at 20 °C, clear, colorless

solubility

H2O: soluble 480 g/L at 20 °C

solubility

-

solubility

-

form

powder, crystals or pellets

form

solid

form

-

form

-

mp

132-135 °C (lit.)

mp

132-135 °C (lit.)

mp

132-135 °C (lit.)

mp

132-135 °C (lit.)

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
  • Specification Sheet

    • Choose from one of the most recent versions:

    Certificates of Analysis (COA)

    Lot/Batch Number
    BCCM8524
    BCCM8004
    BCCK8961
    BCCJ7266
    BCCJ9916

    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

    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
    Florin Sasarman et al.
    Human molecular genetics, 24(10), 2841-2847 (2015-02-06)
    Addition of the trinucleotide cytosine/cytosine/adenine (CCA) to the 3' end of transfer RNAs (tRNAs) is essential for translation and is catalyzed by the enzyme TRNT1 (tRNA nucleotidyl transferase), which functions in both the cytoplasm and mitochondria. Exome sequencing revealed TRNT1
    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
    Annette Bahlinger et al.
    Angewandte Chemie (International ed. in English), 53(33), 8779-8783 (2014-03-20)
    β-Amino thioesters are important natural building blocks for the synthesis of numerous bioactive molecules. An organocatalyzed Mannich reaction was developed which provides direct and highly stereoselective access to acyclic β(2)- and β(2,3,3)-amino thioesters with adjacent tertiary and quaternary stereocenters. Mechanistic
    Sreenivasa C Ramaiahgari et al.
    Archives of toxicology, 88(5), 1083-1095 (2014-03-07)
    Immortalized hepatocyte cell lines show only a weak resemblance to primary hepatocytes in terms of gene expression and function, limiting their value in predicting drug-induced liver injury (DILI). Furthermore, primary hepatocytes cultured on two-dimensional tissue culture plastic surfaces rapidly dedifferentiate
    View All Related Papers

    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