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93643-65-3

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93643-65-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 93643-65-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,3,6,4 and 3 respectively; the second part has 2 digits, 6 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 93643-65:
(7*9)+(6*3)+(5*6)+(4*4)+(3*3)+(2*6)+(1*5)=153
153 % 10 = 3
So 93643-65-3 is a valid CAS Registry Number.

93643-65-3Relevant articles and documents

HIGHLY ENANTIOSELECTIVE ALDOL REACTION OF METHYL KETONES VIA CHIRAL STANNOUS AZAENOLATES

Narasaka, Koichi,Miwa, Tetsuo,Hayashi, Hiroki,Ohta, Masako

, p. 1399 - 1402 (2007/10/02)

Chiral 1,3-oxazolidines are readily prepared from methyl ketones and chiral norephedrine.Formation of stannous azaenolates from the oxazolidines and reaction with aldehydes followed by removal of the chiral auxiliary lead to the aldol products in high level of enantiomeric putity.

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