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重要文件

59767

Sigma-Aldrich

氯酚红-β-D-吡喃半乳糖苷

β-galactosidase, ≥90% (HPLC), powder or crystals

同義詞:

CPRG, 氯酚红-β-D-半乳糖苷

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About This Item

經驗公式(希爾表示法):
C25H22Cl2O10S
CAS號碼:
分子量::
585.41
MDL號碼:
分類程式碼代碼:
12352204
PubChem物質ID:
NACRES:
NA.83

產品名稱

氯酚红-β-D-吡喃半乳糖苷, ≥90% (HPLC)

化驗

≥90% (HPLC)

形狀

powder or crystals

溶解度

water: 20 mg/mL, clear, orange to very deep red

儲存溫度

−20°C

SMILES 字串

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 密鑰

YOUWVNCQJOMMEU-AETRGLENSA-N

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一般說明

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-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。

應用

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

其他說明

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。

儲存類別代碼

11 - Combustible Solids

水污染物質分類(WGK)

WGK 3

閃點(°F)

Not applicable

閃點(°C)

Not applicable

個人防護裝備

Eyeshields, Gloves, type N95 (US)


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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
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.
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
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)
Hae Ja Shin et al.
Journal of biotechnology, 119(1), 36-43 (2005-07-30)
We herein report the development of a recombinant bacterial biosensor for the rapid and easy detection of phenolic compounds in the field. A plasmid was designed to encode a beta-galactosidase reporter gene under the control of capR, an activator involved

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