2-硝基苯基-β-D-吡喃半乳糖苷, 99%,非動物源
??【編號】:109040 ??【產(chǎn)品名稱】:2-硝基苯基-β-D-吡喃半乳糖苷, 99%,非動物源 ??【規(guī)格】:1g ??【用途】: ![]() 2-硝基苯基-β-D-吡喃半乳糖苷, 99%,非動物源
Product Name: 2-Nitrophenyl β-D-galactopyranoside
別名:2-硝基苯基-β-D-吡喃半乳糖苷(ONPG) ;鄰硝基苯-β-D-吡喃半乳糖苷
CAS號:369-07-3
分子式:C12H15O8N
分子量:301.25
介紹: 溶于水、甲醇,水中溶解度可達(dá)15mg/ml。有吸濕性。
用途: 用于檢測β-半乳糖苷酶(β-galactosidase)活性,是β-半乳糖苷酶的顯色底物。經(jīng)β-半乳糖苷酶催化后可產(chǎn)生黃色產(chǎn)物,在410-420nm波長可以檢測吸光度。
熔點(diǎn): 195℃
特定比重: 1.599
比旋光度: -68.8 ° (C=1, H2O)
貯存: -20℃充氬保存
生化和生理學(xué)機(jī)理: β-galactosidase, breaks down lactose into galactose and glucose. β-Galactosidase is not lactose specific and can act on simple galactosides. 2-Nitrophenyl β-D-galactopyranoside hydrolysis results in the release of galactose and a yellow chromogenic compound. The test substrate does not depend on an induced or constitutive permease enzyme to enter the cell, therefore reactions are rapid and occur within a 24-hour period.
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上一篇:對硝基苯基-β-D-吡喃半乳糖苷(PNPG) , 99% | 下一篇:昆布三糖, 90% |
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