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133271-07-5

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133271-07-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 133271-07-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,3,2,7 and 1 respectively; the second part has 2 digits, 0 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 133271-07:
(8*1)+(7*3)+(6*3)+(5*2)+(4*7)+(3*1)+(2*0)+(1*7)=95
95 % 10 = 5
So 133271-07-5 is a valid CAS Registry Number.

133271-07-5Relevant academic research and scientific papers

Stereoselective total synthesis of (+)-(6R,2′S)-cryptocaryalactone and (-)-(6S,2′S)-epi cryptocaryalactone via asymmetric acetate aldol reaction

Yadav,Bhunia, Dinesh C.,Ganganna

supporting information; experimental part, p. 2496 - 2499 (2012/06/16)

The total synthesis of (+)-(6R,2′S)-cryptocaryalactone and (-)-(6S,2′S)-epi cryptocaryalactone is reported based on asymmetric acetate aldol reaction. Still-Gennari reaction, Evans acetal intramolecular oxa-Michael reaction and lactonisation are the key s

Enantioselective Chiral Borane-Mediated Aldol Reactions of Silyl Ketene Acetals with Aldehydes. Novel Effect of the Trialkylsilyl Group of the Silyl Ketene Acetal on the Reaction Course

Kiyooka, Syun-ichi,Kaneko, Yuichi,Komura, Misako,Matsuo, Hidehito,Nakano, Masahito

, p. 2276 - 2278 (2007/10/02)

Highly enantioselective aldol reactions of silyl ketene acetals with a variety of aldehydes were achieved by using chiral boranes prepared from the sulfonamides of α-amino acids.

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