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2-Nitrophenyl β-D-galactopyranoside

Cas:
369-07-3
Molecular Structure:
MDL:
MFCD00063255
Molecular Formula:
C12H15O8N
Molecular Weight:
301.25
Alias:
邻硝基苯-β-D-吡喃半乳糖苷 o-Nitrophenyl β-D-galactopyranoside ONPG
Product order:
Name Specifications Packing Price Delivery
2-Nitrophenyl β-D-galactopyranoside 1g RMB 396 现货
2-Nitrophenyl β-D-galactopyranoside 99% 1g RMB 198 Consulting service
2-Nitrophenyl β-D-galactopyranoside 99% 5g RMB 528 Consulting service
2-Nitrophenyl β-D-galactopyranoside 99% 25g RMB 1716 Consulting service
Character:
本产品为接近白色的晶状粉末。溶于水、甲醇,水中溶解度可达15mg/ml。有吸湿性。
熔点:195℃(分解)
Quality Standard:
外观Appearance                          白色至极微黄色粉末
红外光谱鉴定Infrared spectrometry       和对照品匹配
纯度Purity                              ≥99.0% (HPLC)
水分Water                               <0.2 % (K.F.)
比旋光度Specific rotation               -68°~ -72° (c=1, H2O) 
Storage:
-20℃充氩保存
用途  用于检测β-半乳糖苷酶(β-galactosidase)活性,是β-半乳糖苷酶的显色底物。经β-半乳糖苷酶催化后可产生黄色产物,在410-420nm波长可以检测吸光度。
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