product name
氯酚红-β-D-吡喃半乳糖苷, ≥90% (HPLC)
检测方案
≥90% (HPLC)
形式
powder or crystals
溶解性
water: 20 mg/mL, clear, orange to very deep red
储存温度
−20°C
SMILES字符串
OC[C@H]1O[C@@H](Oc2ccc(cc2Cl)C(=C3/C=CC(=O)C(Cl)=C3)\c4ccccc4S(O)(=O)=O)[C@H](O)[C@@H](O)[C@H]1O
InChI
1S/C25H22Cl2O10S/c26-15-9-12(5-7-17(15)29)21(14-3-1-2-4-20(14)38(33,34)35)13-6-8-18(16(27)10-13)36-25-24(32)23(31)22(30)19(11-28)37-25/h1-10,19,22-25,28,30-32H,11H2,(H,33,34,35)/b21-12-/t19-,22+,23+,24-,25-/m1/s1
InChI key
YOUWVNCQJOMMEU-AETRGLENSA-N
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一般描述
氯酚红-β-D-吡喃半乳糖苷(CPRG)是一种长波长黄色染料，常用于比色检测。它可作为 β-半乳糖苷酶 (β-gal) 的底物，半乳糖苷酶可水解CPRG 形成氯酚红（紫色）。该产品通过测量其在 570 nm 处的吸光度进行定量检测。CPRG 用于鉴定粪便大肠菌群。它的灵敏度比邻-硝基苯基-β-半乳糖苷（ONPG）等显色剂高10倍左右。CPRG还具有很高的快速转化率。
应用
氯酚红-β-D-吡喃半乳糖苷已被用作 β-半乳糖苷(β-ga）的底物：
- 用于靶RNA检测的基于纸的物细胞蛋白质表达体系
- 采用lacZ输出基因进行多个临床相关突变的比色检测
- 用于细菌定量的比色测定
其他说明
测量转染细胞中 β-半乳糖苷酶的表达水平。lacZ 基因是一种在转染反应中常用的报告基因，因为它的产物 β-半乳糖苷酶是一种非常稳定的酶。
WGK
WGK 3
闪点(°F)
Not applicable
闪点(°C)
Not applicable
个人防护装备
Eyeshields, Gloves, type N95 (US)
法规信息
监管及禁止进口产品
J H Felgner et al.
The Journal of biological chemistry, 269(4), 2550-2561 (1994-01-28)
The application of cationic liposome reagents has advanced DNA and mRNA transfection research in vitro, and data are accumulating which show their utility for in vivo gene transfer. However, chemical structure-activity data leading to a better mechanistic understanding of their
V C Wutor et al.
Chemosphere, 68(4), 622-627 (2007-04-17)
The presence of coliforms in polluted water was determined enzymatically (in situ) by directly monitoring the activity of beta-d-galactosidase (B-GAL) through the hydrolysis of the yellow chromogenic subtrate, chlorophenol red beta-d-galactopyranoside (CPRG), which produced a red chlorophenol red (CPR) product.
Generation of antigen-specific, lacZ-inducible T-cell hybrids.
S Malarkannan et al.
Methods in molecular biology (Clifton, N.J.), 156, 265-272 (2000-11-09)
C Vega et al.
Parasitology research, 95(4), 296-298 (2005-02-01)
We have developed a new pharmacological screening assay for epimastigotes of Trypanosoma cruzi (clone CL-B5) that express the Escherichia coli LacZ gene. The assay is based on determining the activity of the cytoplasmic beta-galactosidase released into the culture on membrane
D C Eustice et al.
BioTechniques, 11(6), 739-740 (1991-12-01)
A sensitive method has been developed for the detection of E. coli beta-galactosidase in transfected HeLa cells. The chromogenic substrate, CPRG (chlorophenol red-beta-D-galactopyranoside), was compared with ONPG (o-nitrophenyl-beta-D-galactopyranoside) by kinetic analysis with purified beta-galactosidase. The Km for CPRG was 1.35
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