2-Nitrophenyl-beta-D-galactopyranoside
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2-Nitrophenyl-beta-D-galactopyranoside 속성
- 녹는점
- 186-193 °C (dec.)
- 알파
- -70 º (c=1, H2O)
- 끓는 점
- 442.39°C (rough estimate)
- 밀도
- 1.3709 (rough estimate)
- 굴절률
- -68.8 ° (C=1, H2O)
- 저장 조건
- 2-8°C
- 용해도
- DMSO(약간 용해됨), 물(약간 용해됨, 가열, 초음파 처리)
- 산도 계수 (pKa)
- 12.69±0.70(Predicted)
- 물리적 상태
- 가루
- 색상
- 흰색에서 아주 약간 노란색
- optical activity
- [α]20/D 70±1°, c = 1% in H2O
- 수용성
- 물에 용해됩니다.
- BRN
- 92207
- InChIKey
- KUWPCJHYPSUOFW-RMPHRYRLSA-N
- CAS 데이터베이스
- 369-07-3(CAS DataBase Reference)
안전
- 위험 및 안전 성명
- 위험 및 사전주의 사항 (GHS)
위험품 표기 | Xi | ||
---|---|---|---|
위험 카페고리 넘버 | 36/37/38 | ||
안전지침서 | 22-24/25-36-26 | ||
WGK 독일 | 3 | ||
F 고인화성물질 | 3-10-21 | ||
HS 번호 | 29400090 |
2-Nitrophenyl-beta-D-galactopyranoside C화학적 특성, 용도, 생산
개요
2-Nitrophenyl-β-D-galactopyranoside (ONPG) is a colorimetric and spectrophotometric substrate for detecting β-galactosidase activity. This compound is usually colorless. However, if β-galactosidase is present, it hydrolyzes the ONPG molecule into galactose and ortho-nitrophenol. The latter compound has a yellow color that can be used to check for enzyme activity utilizing a colorimetric assay (at 420 nm wavelength). β-Galactosidase is required for lactose utilization, so the intensity of the color produced can be used to measure the enzymatic rate. Though ONPG mimics lactose and is hydrolyzed by β-galactosidase, it cannot act as an inducer for the lac operon. Without another lactose analog that can act as an inducer, such as isopropyl β-D-1-thiogalactopyranoside (IPTG), β-galactosidase will not be transcribed and ONPG will not be hydrolyzed.화학적 성질
White Crystalline Solid용도
2-Nitrophenyl-beta-D-galactopyranoside is a β-Galactosidase substrate for colorimetric and EIA applications; counterpart of widely employed pNPP/alkaline phosphatase substrate.정의
ChEBI: A beta-D-galactoside having a 2-nitrophenyl substituent at the anomeric position.일반 설명
ONPG (2-Nitrophenyl β-D-galactopyranoside) is a colorimetric substrate for β-galactosidase.Purification Methods
Purify 2-nitrophenyl--D-galactopyranoside by recrystallisation from EtOH. [Seidman & Link J Am Chem Soc 72 4324 1950, Snyder & Link J Am Chem Soc 75 1758 1953]. It is a chromogenic substrate for -galactosidases [Jagota et al. J Food Sci 46 161 1981]. [Beilstein 17/7 V 52.]2-Nitrophenyl-beta-D-galactopyranoside 준비 용품 및 원자재
원자재
준비 용품
2-Nitrophenyl-beta-D-galactopyranoside 공급 업체
글로벌( 460)공급 업체
공급자 | 전화 | 이메일 | 국가 | 제품 수 | 이점 |
---|---|---|---|---|---|
CD Chemical Group Limited | +8615986615575 |
info@codchem.com | China | 20356 | 58 |
Yunbio Tech Co.,Ltd. | +86-010-60605551 +86-18046518538 |
yunbiochem@126.com | China | 321 | 58 |
Hebei Mojin Biotechnology Co., Ltd | +8613288715578 |
sales@hbmojin.com | China | 12470 | 58 |
Hebei Yanxi Chemical Co., Ltd. | +8617531190177 |
peter@yan-xi.com | China | 6011 | 58 |
Anhui Ruihan Technology Co., Ltd | +8617756083858 |
daisy@anhuiruihan.com | China | 994 | 58 |
Capot Chemical Co.,Ltd. | 571-85586718 +8613336195806 |
sales@capotchem.com | China | 29797 | 60 |
Henan Tianfu Chemical Co.,Ltd. | +86-0371-55170693 +86-19937530512 |
info@tianfuchem.com | China | 21687 | 55 |
Hangzhou FandaChem Co.,Ltd. | 008657128800458; +8615858145714 |
fandachem@gmail.com | China | 9340 | 55 |
Shanghai Zheyan Biotech Co., Ltd. | 18017610038 |
zheyansh@163.com | CHINA | 3620 | 58 |
career henan chemical co | +86-0371-86658258 |
sales@coreychem.com | China | 29914 | 58 |
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