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118907-66-7

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118907-66-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 118907-66-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,8,9,0 and 7 respectively; the second part has 2 digits, 6 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 118907-66:
(8*1)+(7*1)+(6*8)+(5*9)+(4*0)+(3*7)+(2*6)+(1*6)=147
147 % 10 = 7
So 118907-66-7 is a valid CAS Registry Number.

118907-66-7Downstream Products

118907-66-7Relevant articles and documents

Asymmetric Synthesis Using Chiral Acetals: Studies on the Nucleophilic Addition of Organometallics to Chiral α-Keto Acetals in Cyclic Systems

Tamura, Yasumitsu,Annoura, Hirokazu,Kondo, Hiroshi,Fuji, Masahiro,Yoshida, Takayuki,Fujioka, Hiromichi

, p. 2305 - 2313 (2007/10/02)

Four chiral cyclic α-keto acetals (3a-d) were prepared through transacetalization of the α-hydroxydimethyl acetals with (-)-(2S,3S)-1,4-dimethoxy-2,3-butanediol or (-)-(2R,3R)-2,3-butanediol and reacted with organometallic reagents (Grignard reagents and organolithium reagents).The reactions of the α-keto acetals (3a, 3b) derived from 1 and (-)-(2S,3S)-1,4-dimethoxy-2,3-butanediol with Grignard reagents proceeded in a highly diastereoselective manner.Keywords-Asymmetric synthesis; diastereoselective nucleophilic addition; chiral cyclic α-keto-acetal; (-)-(2S,3S)-1,4-dimethoxy-2,3-butanediol; (-)-(2R,3R)-2,3-butanediol; Grignard reagent; organolithium reagent

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