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433257-34-2

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433257-34-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 433257-34-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,3,3,2,5 and 7 respectively; the second part has 2 digits, 3 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 433257-34:
(8*4)+(7*3)+(6*3)+(5*2)+(4*5)+(3*7)+(2*3)+(1*4)=132
132 % 10 = 2
So 433257-34-2 is a valid CAS Registry Number.

433257-34-2Relevant articles and documents

A practical synthesis of optically active aromatic epoxides via asymmetric transfer hydrogenation of α-chlorinated ketones with chiral rhodium-diamine catalyst

Hamada, Takayuki,Torii, Takayoshi,Izawa, Kunisuke,Ikariya, Takao

, p. 7411 - 7417 (2004)

A practical method for the synthesis of optically active aromatic epoxides has been developed via the formation of optically active α-chlorinated alcohols and intramolecular etherification. Optically active alcohols with up to 99% ee can be obtained from

A versatile route to (E)- and (Z)-2-hydroxy-3,4-unsaturated disubstituted sulfilimines and their haloamidation reaction

Raghavan, Sadagopan,Mustafa, Shaik,Sridhar

experimental part, p. 4499 - 4507 (2009/09/30)

(Chemical Equation Presented) α-Chloro ynones have been reduced using Noyori's Ru catalyst to furnish R-chloro propargylic alcohols with excellent enantioselectivity. These have been used as a common precursor for the preparation of (E)- and (Z)-2-hydroxy

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