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折扣/货期| 货号：CDX-C0007-M100 | 规格：100 mg | 目录价：￥1414 |
| 货号：CDX-C0007-G001 | 规格：1 g | 目录价：￥3374 |
| 货号：CDX-C0007-G005 | 规格：5 g | 目录价：￥10122 |
产品详情
产品名称:
3-Cyanoumbelliferone
产品描述:
Phenolic dyes with high pKas - such as 7-hydroxycoumarin (often called umbelliferone) and the more common 7-hydroxy-4-methylcoumarin - are not fully deprotonated and therefore not fully fluorescent unless the pH of the reaction mixture is raised to above pH ~10. Thus, substrates derived from these fluorophores are seldom used for continuous measurement of enzymatic activity in solution or live cells. The similar 3-cyano-7-hydroxycoumarin and 6,8-difluoro-7-hydroxy-4-methylcoumarin have lower pKas, making them suitable for a broader range of applications. Moreover, the -trifluoromethylumbelliferone product has longer-wavelength spectra and stronger absorbance than -methylumbelliferone. Ether, ester and phosphate substrates derived from these phenolic dyes may be fluorescent but invariably exhibit shorter-wavelength absorption and emission spectra.
宿主来源:
Synthetic.
保存温度:
+4°C
运输温度:
Ambient
预期分子量:
187.15
产品形式:
solid
有效期:
Stable for at least 2 years after receipt when stored at +4°C.
产地:
瑞士
纯度:
>98% (TLC)
CAS号:
19088-73-4
分子式:
C10H5NO3
溶解度:
Soluble in alcohols or DMF.
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