CAS:369-07-3
369-07-3
CAS号：369-07-3
品名：2-硝基苯-beta-D-半乳糖苷2-Nitrophenyl-beta-D-galactopyranoside
中文别名：邻硝基苯-β-D-吡喃半乳糖苷;2-硝基苯基-β-D-吡喃半乳糖苷(ONPG);2-硝基苯基-β-D-吡喃半乳糖苷;邻硝基苯基-β-D-吡喃半乳糖苷;邻硝基苯-β-D-半乳糖苷(ONPG);2-硝基苯基-b-D-半乳糖苷;2-硝基苯基β-D-吡喃半乳糖苷;2-氟代-2-去氧-D-葡萄糖;
英文别名：2-Nitrophenylβ-D-galactopyranoside;2-Nitrophenylβ-D-Galactopyranoside[Substrate;2-Nitrophenylβ-D-galactopyranoside(ONPG);2-Nitrophenylbeta-D-Galactopyranoside;2-Nitrophenyl-β-D-galactopyranoside;2-Nitrophenyl-β-D-Galactopyranoside;
分子式：C12H15NO8
分子量：301.249
精确质量：301.08
Psa：145.2
EINECS号：206-716-1
外观与性状：白色结晶固体
密度：1.599 g/cm3
沸点：572.4ºC at 760 mmHg
熔点：186-193°C (dec.)
闪点：300ºC
折射率：-68.8 ° (C=1, H2O)
稳定性：Stable under normal temperatures and pressures.
储存条件：2-8ºC
蒸汽压：6.1E-14mmHg at 25°C
安全说明：S22-S24/25
危险类别码：R36/37/38
WGK Germany：3
海关编码：29400090
危险品标志：Xi
简介：ortho-Nitrophenyl-β-galactoside(ONPG)isacolorimetricandspectrophotometricsubstratefordetectionofβ-galactosidaseactivity.Thiscompoundisnormallycolorless.However,ifβ-galactosidaseispresent,ithydrolyzestheONPGmoleculeintogalactoseandortho-nitrophenol.Thelattercompoundhasayellowcolorthatcanbeusedtocheckforenzymeactivitybymeansofacolorimetricassay(at420nmwavelength).β-Galactosidaseisrequiredforlactoseutilization,sotheintensityofthecolorproducedcanbeusedasameasureoftheenzymaticrate.
碳水化合物
