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CAS No 7240-90-6 , 5-Bromo-4-chloro-3-indolyl-beta-D-galactoside

  • Name: 5-Bromo-4-chloro-3-indolyl-beta-D-galactoside
  • Synonyms: 5-Bromo-4-chloro-3-indolyl-beta-D-galactoside;X-Gal;
  • CAS Registry Number:
  • Melting Point: 230 ºC (LIT.)
  • Density: 1.882g/cm3
  • Refractive index: 1.731
  • Alpha: -64 º (C=1, H2O/DMF (1/1))
  • Safety Statements: S24/25
  • Hazard Symbols: Xi
  • EINECS: 230-640-8
  • Molecular Weight: 408.63
  • InChI: InChI=1/C14H15BrClNO6/c15-5-1-2-6-9(10(5)16)7(3-17-6)22-14-13(21)12(20)11(19)8(4-18)23-14/h1-3,8,11-14,17-21H,4H2/t8-,11+,12+,13-,14-/m1/s1
  • Risk Statements: S24/25
  • Molecular Formula: C14H15BrClNO6
  • Molecular Structure:CAS No:7240-90-6 5-Bromo-4-chloro-3-indolyl-beta-D-galactoside
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7240-90-6 5-Bromo-4-chloro-3-indolyl-B-D-galactoside

  • 5-Bromo-4-chloro-3-indolyl-B-D-galactosideX-b-GalX-GAL, >98%
  • United States INDOFINE Chemical Co., Inc. [Manufacturer]
  • Tel: (908) 359-6778
  • Fax: (908) 359-1179
  • Address: 121 Stryker Lane
    Bldg 30, Suite 1
    Hillsborough, NJ 08844 ,United States
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7240-90-6 X-GAL

  • X-GAL
  • Switzerland CONNECT MARKETING GMBH [Manufacturer]
  • Tel: +41 81 740 58 50
  • Fax: +41 81 740 58 51
  • Address: CONNECT MARKETING GMBH
    BAHNWEG NORD 35
    CH-9475 SEVELEN/SG
    SWITZERLAND ,Switzerland
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7240-90-6 5-Bromo-4-chloro-3-indolyl-beta-D-galactopyranoside

  • 5-Bromo-4-chloro-3-indolyl-beta-D-galactopyranoside
  • United States Chem-Impex International, Inc. [Manufacturer]
  • Tel: 630 766 2112
  • Fax: 630 766 2218
  • Address: 935 Dillon Drive Wood Dale IL 60191 USA ,United States
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7240-90-6 5-Bromo-4-chloro-3-indolyl-b-D-galactopyranoside, 98%

  • 5-Bromo-4-chloro-3-indolyl-b-D-galactopyranoside, 98%
  • Belgium Alkemi [Manufacturer]
  • Tel: +32 9 340 49 49
  • Fax: +32 9 340 49 47
  • Address: Poststraat, 82 B-9160 Lokeren Belgium ,Belgium
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7240-90-6 5-Bromo-4-chloro-3-indolyl-beta-D-galactoside

  • 5-Bromo-4-chloro-3-indolyl-beta-D-galactoside
  • United States INTERNATIONAL LABORATORY LIMITED [Manufacturer]
  • Tel: ( 650 ) 278-9963
  • Fax: ( 650 ) 589-2786
  • Address: 1067 SNEATH LN SAN BRUNO CA 94066, USA SAN BRUNOUNITED STATES SAN BRUNO,United States
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7240-90-6 Deprolorphin

  • Deprolorphin, 99%
  • China Facus Pharmaceutical Co., Ltd. [Manufacturer]
  • Tel: +86-(0)574-62378411
  • Fax: +86-(0)574-62378410
  • Address: 24Fl,Yuanjing Building,Beilun District, Zhejiang 315800 NingboCHINA Ningbo,China
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7240-90-6 5-Bromo-4-chloro-3-indolyl-beta-D-galactoside

  • 5-Bromo-4-chloro-3-indolyl-beta-D-galactoside
  • Germany Paragos [Manufacturer]
  • Tel: +49 69 41 09 21 91
  • Fax: +49 69 42 69 45 85
  • Address: Alt Fechenheim 3460386 Frankfurt/MainGERMANY Frankfurt/Main,Germany
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7240-90-6 5-Bromo-4-chloro-3-indolyl-alpha-D-galactopyranoside (X-alpha-gal) 0 285.00

  • 5-Bromo-4-chloro-3-indolyl-alpha-D-galactopyranoside (X-alpha-gal) 0 285.00, 98%
  • United Kingdom Cardiff Chemicals Limited [Manufacturer]
  • Tel: +44(0) 29 20 779612
  • Fax: +44(0) 29 20 779612
  • Address: Unit 10, CF3 0EF CardiffUNITED KINGDOM CF3 0EF Cardiff,United Kingdom
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7240-90-6 5-Bromo-4-chloro-3-indolyl-beta-D-galactoside

  • 5-Bromo-4-chloro-3-indolyl-beta-D-galactoside B22390 7240-90-6
  • China bepharm ltd. []
  • Tel: 86-21-51816456
  • Address: 128 Xiangyin Road, Room C320-321 Yangpu District, Shanghai 200433, China ,China
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7240-90-6 A794 5-BROMO-4-CHLORO-3-INDOLYL B-D-GALACTOPYRANOSIDE

  • United Kingdom Carbosynth Limited [Manufacturer]
  • Tel: +44 (0)1635 578444
  • Fax: +44 (0)1635 579444
  • Address: Carbosynth Limited
    8&9 Old Station Business Park
    Compton
    Berkshire
    RG20 6NE
    UK ,United Kingdom
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References of 5-Bromo-4-chloro-3-indolyl-beta-D-galactoside
Title: X-gal
CAS Registry Number: 7240-90-6
CAS Name: 5-Bromo-4-chloro-1H-indol-3-yl b-D-galactopyranoside
Molecular Formula: C14H15BrClNO6
Molecular Weight: 408.63
Percent Composition: C 41.15%, H 3.70%, Br 19.55%, Cl 8.68%, N 3.43%, O 23.49%
Literature References: Chromogenic substrate of the lacZ gene product, b-galactosidase; produces a rich blue color when cleaved by the enzyme. Prepn: J. P. Horwitz et al., J. Med. Chem. 7, 574 (1964). Colorimetric reaction in tissue to localize b-galactosidase: B. Pearson et al., Lab. Invest. 12, 1249 (1963); Z. Lojda, Histochemie 23, 266 (1970). Protocol for blue-white a-complementation screening: J. Sambrook et al., Molecular Cloning: A Laboratory Manual (Cold Spring Harbor, New York, 2nd ed., 1989) pp 1.7-1.9, 1.85-1.87. Optimization of detection of exogenous bacterial lacZ expression: D. J. Weiss et al., Hum. Gene Ther. 8, 1545 (1997); of fixative conditions in X-gal staining: W. Ma et al., J. Histochem. Cytochem. 50, 1421 (2002); of blue-white screening procedure: A. L. Sherwood, BioTechniques 34, 644 (2003).
Properties: Amorphous solid from methanol, mp 237-239° (dec). [a]D24 -69° (c = 1.0 in 50% DMF). Sol in DMF, DMSO.
Melting point: mp 237-239° (dec)
Optical Rotation: [a]D24 -69° (c = 1.0 in 50% DMF)
Use: In histochemical staining, in blue-white selection of bacterial colonies with lacZ gene activity during cloning experiments.