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Merck

51456

Sigma-Aldrich

尿素

BioUltra, for molecular biology, 99% (T)

别名:

碳酰二胺, 碳酰胺

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500 G
$259.00
2.5 KG
$416.00

$259.00


国内现货,预计发货时间2025年4月10日详情


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变更视图
500 G
$259.00
2.5 KG
$416.00

About This Item

线性分子式:
NH2CONH2
CAS号:
分子量:
60.06
Beilstein:
635724
EC 号:
MDL编号:
UNSPSC代码:
12352111
PubChem化学物质编号:
NACRES:
NA.25

$259.00


国内现货,预计发货时间2025年4月10日详情


获取大包装报价

等级

Molecular Biology
for molecular biology

产品线

BioUltra

方案

99% (T)

表单

powder or crystals

杂质

DNases, none detected
RNases, none detected
insoluble matter, passes filter test
phosphatases, none detected
proteases, none detected
≤0.1% biuret
<0.005% formaldehyde (HCHO)

灼烧残渣

≤0.01% (as SO4)

缺失

≤0.1% loss on drying, 20 °C (HV)

pH值(酸碱度)

8.0-10.0 (20 °C, 8 M in H2O)

mp

132-135 °C (lit.)

溶解性

H2O: 8 M at 20 °C, clear, colorless

密度

1.335 g/mL at 25 °C (lit.)

痕量阴离子

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

痕量阳离子

Al: ≤5 mg/kg
As: ≤0.1 mg/kg
Ba: ≤5 mg/kg
Bi: ≤5 mg/kg
Ca: ≤10 mg/kg
Cd: ≤5 mg/kg
Co: ≤5 mg/kg
Cr: ≤5 mg/kg
Cu: ≤5 mg/kg
Fe: ≤5 mg/kg
K: ≤50 mg/kg
Li: ≤5 mg/kg
Mg: ≤5 mg/kg
Mn: ≤5 mg/kg
Mo: ≤5 mg/kg
Na: ≤50 mg/kg
Ni: ≤5 mg/kg
Pb: ≤5 mg/kg
Sr: ≤5 mg/kg
Zn: ≤5 mg/kg

SMILES字符串

NC(N)=O

λ

8 M in H2O

紫外吸收

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

InChI

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

InChI key

XSQUKJJJFZCRTK-UHFFFAOYSA-N

基因信息

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应用

用于蛋白质变性以及作为不溶性或变性蛋白的温和增溶剂。可用于从已由 6M 盐酸胍变性的样品(如包涵体)复性蛋白质。可与盐酸胍和二硫苏糖醇 (DTT) 一起用于复性变性蛋白以恢复其天然或活性形式。

其他说明

变性试剂 [1];通常与聚丙烯酰胺凝胶电泳配合使用,用于分离链长最多 200 个核苷酸的单链核酸[2][3][4]

储存分类代码

11 - Combustible Solids

WGK

WGK 1

闪点(°F)

Not applicable

闪点(°C)

Not applicable

个人防护装备

Eyeshields, Gloves, type N95 (US)


历史批次信息供参考:

分析证书(COA)

Lot/Batch Number

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其他客户在看

Slide 1 of 2

1 of 2

Fractionation of low molecular weight DNA or RNA in polyacrylamide gels containing 98% formamide or 7 M urea.
T Maniatis et al.
Methods in enzymology, 65(1), 299-305 (1980-01-01)
R. Poulson et al.
The Ribonucleic Acids, 333-333 (1977)
A Paulus et al.
Electrophoresis, 14(1-2), 27-35 (1993-01-01)
DNA digest analysis with polymer-filled capillaries in capillary electrophoresis is described. The samples analyzed consisted of commercially available standards including a 100 base pair ladder with repeating units up to 2000 base pairs. Three DNA digests covered the most common
R.C. Ogden et al.
Methods in Enzymology, 152, 66-66 (1987)
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

实验方案

An optimized LC-MS/MS based workflow for low artifact tryptic digestion and peptide mapping of monoclonal antibody, adalimumab (Humira) using filter assisted sample preparation (FASP).

基于优化的 LC-MS/MS 工作流程,通过过滤辅助样品制备 (FASP) 对阿达木单抗 (Humira) 绘制低伪影胰蛋白酶酶解和肽图谱。

Questions

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  1. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer
    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

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  2. How can I determine the shelf life / expiration / retest date of this product?

    1 answer
    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/449/386/product-dating-information-mk.pdf

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