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81002-23-5

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81002-23-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 81002-23-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,0,0 and 2 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 81002-23:
(7*8)+(6*1)+(5*0)+(4*0)+(3*2)+(2*2)+(1*3)=75
75 % 10 = 5
So 81002-23-5 is a valid CAS Registry Number.

81002-23-5Relevant articles and documents

ASYMMETRIC 1,4-ADDITIONS OF COORDINATED MeCu.BF3 TO CHIRAL ENOATES: ENANTIOSELECTIVE SYNTHESES OF (S)-(-)-CITRONELLIC ACID

Oppolzer, Wolfgang,Moretti, Robert,Godel, Thierry,Meunier, Anne,Loeher, Heinz

, p. 4971 - 4974 (2007/10/02)

nBu3P- or cyanide-stabilized RCu.BF3 (R=Me, 4-Me-3-pentenyl) undergo efficient 1,4-additions to neopentylether-shielded trans-enoates.Thus chiral β-substituted carboxylic acids e.g. (S)-citronellic acid were obtained in high e.e. (Schemes 2 and 4).

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