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76474-26-5

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76474-26-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 76474-26-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,6,4,7 and 4 respectively; the second part has 2 digits, 2 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 76474-26:
(7*7)+(6*6)+(5*4)+(4*7)+(3*4)+(2*2)+(1*6)=155
155 % 10 = 5
So 76474-26-5 is a valid CAS Registry Number.

76474-26-5Downstream Products

76474-26-5Relevant articles and documents

COMBINED HALOGENATION OF UNSATURATED COMPOUNDS. XV. SYNTHESIS OF DIASTEREOMERIC PAIRS OF 2,3-DICHLORO-3-FLUOROISOBUTYRIC, 2,3-DICHLORO-2,3-DIFLUOROPROPIONIC, AND 2,3-DIHALOGENO-3-FLUOROBUTYRIC ESTERS AND INVESTIGATION OF SOME OF THEIR ELIMINATION REACTIONS

Boguslavskaya, L. S.,Chernov, A. N.,Krom, E. N.

, p. 1392 - 1397 (2007/10/02)

The selective inversion of the configuration of methyl 2R,3R-2,3-dichloro-3-fluoroisobutyrate and 2R,3R-2,3-dichloro-2,3-difluoropropionate to their 2R,3S-diastereomers was realized by dechlorination and subsequent catalytic chlorination of the obtained methyl E-β-fluoro-α-methylacrylate and Z-α,β-difluoroacrylate, respectively.The chlorofluorination and bromofluorination of E- and Z-ethyl β-chlorocrotonates by hexachloromelamine and N-bromosuccinimide in liquid hydrogen fluoride were investigated.The reactions are regioselective and nonstereospecific and lead to the formation of a mixture of ethyl 2R,3R- and 2S,3R-2,3-dichloro-3-fluorobutyrates and 2-bromo-3-chloro-3-fluorobutyrates, respectively.The individual diastereomers were isolated, and the dechlorination and dehydrochlorination of the diastereomeric ethyl 2,3-dichloro-3-fluorobutyrates were investigated.Preparative methods are proposed for the synthesis of E- and Z-ethyl β-fluorocrotonates and Z-ethyl α-chloro-β-fluorocrotonate.

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