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117903-53-4

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117903-53-4 Usage

Chemical Properties

Pale pink to slightly yellowish-green powder

Uses

(1R,2S)-1,2-Bis(4-bromophenyl)ethane-1,2-diamine is an intermediate used in the synthesis of imidazole-fluorescein conjugates which are good candidates for imaging tumors.

Check Digit Verification of cas no

The CAS Registry Mumber 117903-53-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,7,9,0 and 3 respectively; the second part has 2 digits, 5 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 117903-53:
(8*1)+(7*1)+(6*7)+(5*9)+(4*0)+(3*3)+(2*5)+(1*3)=124
124 % 10 = 4
So 117903-53-4 is a valid CAS Registry Number.
InChI:InChI=1/C14H14Br2N2/c15-11-5-1-9(2-6-11)13(17)14(18)10-3-7-12(16)8-4-10/h1-8,13-14H,17-18H2/p+2/t13-,14+

117903-53-4SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 15, 2017

Revision Date: Aug 15, 2017

1.Identification

1.1 GHS Product identifier

Product name (1R,2S)-1,2-Bis(4-bromophenyl)-1,2-ethanediaminium

1.2 Other means of identification

Product number -
Other names Bis(p-Bromophenyl) disulfide

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:117903-53-4 SDS

117903-53-4Relevant articles and documents

Lipase-catalyzed desymmetrization of meso-1,2-diaryl-1,2-diaminoethanes

Mendez-Sanchez, Daniel,Rios-Lombardia, Nicolas,Garcia-Granda, Santiago,Montejo-Bernardo, Jose,Fernandez-Gonzalez, Alfonso,Gotor, Vicente,Gotor-Fernandez, Vicente

, p. 381 - 386 (2014/04/03)

The synthesis and enzyme-catalyzed desymmetrization of meso-1,2-diaryl-1,2- diaminoethanes have been investigated. A family of aromatic meso-1,2-diamines, containing different substitution patterns in the aromatic ring, was first prepared and then desymmetrized enantioselectively using lipases as biocatalysts. Selective alkoxycarbonylation of one of the amino groups was achieved using allyl carbonates, isolating the corresponding allyl monocarbamates with moderate to high enantiomeric excess at 45 C. Candida antarctica lipase types A (CAL-A) and B (CAL-B) displayed the best activities and stereopreferences, with a dramatic influence being observed depending on the diamine structure. Non substituted and para-substituted aryldiamines led to the formation of allyl carbamates with good enantiomeric excess, using CAL-A for the less hindered substrates and CAL-B for the more hindered ones. On the other hand meta- and ortho-derivatives afforded low or negligible conversions and selectivities, respectively.

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