Urea

• Catalog No.: 15604
• CAS Number: 57-13-6
• M. F.: CH4N2O
• M. W.: 60.05526
• Purity: 99.0-100.5%

SYNONYMS

• Title: 尿素
• IUPAC name: urea
• IUPAC Traditional name: urea
• Synonyms: Carbamide; 碳酰胺; 碳酰二胺; Carbonyldiamide

DATABASE IDS

• EC Number: 200-315-5
• MDL Number: MFCD00008022
• Beilstein Number: 635724
• CAS Number: 57-13-6

PROPERTIES

• Impurities: ≤0.001% heavy metals (as Pb)
• Impurities: ≤0.04% insoluble in ethanol
• Impurities: ≤0.05% ammonium (NH4)
• Impurities: ≤0.1% biuret(carbamylurea)
• Linear Formula: NH2CONH2
• Loss on Drying: ≤1.0% loss on drying, 105 °C, 1 h
• Purity: 99.0-100.5%
• Purity: 99.0-101.0% (calc. on dry substance)
• Quality: meets analytical specification of Ph. Eur., BP, USP
• Suitability: in accordance for appearance of solution
• Suitability: in accordance for identity
• Antion Traces: chloride (Cl-): ≤10 mg/kg
• Antion Traces: sulfate (SO42-): ≤50 mg/kg
• Cation Traces: Fe: ≤0.5 mg/kg
• Grade: puriss.
• Ignition Residue: ≤0.1% (as SO4)
• Impurities: alkalic reac. substances, complies
• Impurities: residual solvents, complies
• Density: 1.335 g/mL at 25 °C(lit.)
• Melting Point: 132-135 °C(lit.)
• Melting Point: 132-135 °C
• Personal Protective Equipment: Eyeshields, Gloves, type N95 (US), type P1 (EN143) respirator filter
• RTECS: YR6250000
• German water hazard class: 1

DETAILS

Description (English)

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.

Description (简体中文)

Application
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。