Skip to Content

尊敬的客户：

目前国际形势复杂多变，关税政策尚不明朗，这可能对我们的产品价格产生一定影响。在此情况下，我们希望就订单事宜与您进行友好沟通。

基于当前的不确定性，如果您选择在此期间下单，我们将保留根据实际情况调整价格的权利。同时，我们也理解市场变化可能给您带来的困扰，因此如果在订单实际发货前因关税政策变动导致价格出现较大波动，默克将与您进行协商讨论并视情况对订单进行调整或取消。

Merck
CN
All Photos(1)

Key Documents

View All Documentation

51457

Sigma-Aldrich

Urea solution

BioUltra, ~8 M in H2O

Synonym(s):

Carbamide, Carbonyldiamide

Sign Into View Organizational & Contract Pricing
All Photos(1)

About This Item

Linear Formula:
NH2CONH2
CAS Number:
57-13-6
Molecular Weight:
60.06
Beilstein:
635724
MDL number:
MFCD00008022
UNSPSC Code:
12352111
PubChem Substance ID:
57651308
NACRES:
NA.25
Product 51457 is not currently sold in your country. Contact Technical Service

product line

BioUltra

Quality Level

100

concentration

~8 M in H2O

impurities

insoluble matter, passes filter test
≤0.005% formaldehyde (HCHO)
≤0.05% biuret

refractive index

n20/D 1.40

pH

8.0-10.0 (25 °C)

anion traces

chloride (Cl-): ≤5 mg/kg
sulfate (SO42-): ≤10 mg/kg

cation traces

Al: ≤1 mg/kg
As: ≤0.1 mg/kg
Ba: ≤1 mg/kg
Bi: ≤1 mg/kg
Ca: ≤5 mg/kg
Cd: ≤1 mg/kg
Co: ≤1 mg/kg
Cr: ≤1 mg/kg
Cu: ≤1 mg/kg
Fe: ≤1 mg/kg
K: ≤20 mg/kg
Li: ≤1 mg/kg
Mg: ≤1 mg/kg
Mn: ≤1 mg/kg
Mo: ≤1 mg/kg
Na: ≤20 mg/kg
Ni: ≤1 mg/kg
Pb: ≤1 mg/kg
Sr: ≤1 mg/kg
Zn: ≤1 mg/kg

λ

neat

UV absorption

λ: 260 nm Amax: 0.03
λ: 280 nm Amax: 0.02

Looking for similar products? Visit Product Comparison Guide

Compare Similar Items

View Full Comparison

Show Differences

1 of 4

This Item
333033330033301
Mininert® 阀 for use with 20 mm crimp seal, pkg of 12 ea

33305

Mininert® 阀

Mininert®阀，螺纹 for use with 20/400 mm thread, pkg of 12 ea

33303

Mininert®阀，螺纹

Mininert®阀，螺纹 for use with 13/425 mm thread, pkg of 12 ea

33300

Mininert®阀，螺纹

Mininert®阀，螺纹 for use with 15/425 mm thread, pkg of 12 ea

33301

Mininert®阀，螺纹

material

white PTFE valve

material

white PTFE valve

material

white PTFE valve

material

white PTFE valve

compatibility

for use with 20 mm crimp seal

compatibility

for use with 20/400 mm thread

compatibility

for use with 13/425 mm thread

compatibility

for use with 15/425 mm thread

packaging

pkg of 12 ea

packaging

pkg of 12 ea

packaging

pkg of 12 ea

packaging

pkg of 12 ea

Application

Urea solution has been used as a urea buffer for the denaturation of heavy chain and β2m inclusion body preparations.[1] It has also been used as a component of 1x wash buffer to purify HIS-tagged microphthalmia-associated transcription factor (MITF).[2]

Storage Class Code

10 - Combustible liquids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

    • Choose from one of the most recent versions:

    Certificates of Analysis (COA)

    Lot/Batch Number
    BCCM8020
    BCCL9779
    BCCL6944
    BCCK9869
    BCCJ7015

    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

    Takuya Sekine et al.
    Cell, 183(1), 158-168 (2020-09-28)
    SARS-CoV-2-specific memory T cells will likely prove critical for long-term immune protection against COVID-19. Here, we systematically mapped the functional and phenotypic landscape of SARS-CoV-2-specific T cell responses in unexposed individuals, exposed family members, and individuals with acute or convalescent COVID-19. Acute-phase
    Pakavarin Louphrasitthiphol et al.
    Molecular cell, 79(3), 472-487 (2020-06-13)
    It is widely assumed that decreasing transcription factor DNA-binding affinity reduces transcription initiation by diminishing occupancy of sequence-specific regulatory elements. However, in vivo transcription factors find their binding sites while confronted with a large excess of low-affinity degenerate motifs. Here, using
    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
    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
    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