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133735-62-3

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133735-62-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 133735-62-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,3,7,3 and 5 respectively; the second part has 2 digits, 6 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 133735-62:
(8*1)+(7*3)+(6*3)+(5*7)+(4*3)+(3*5)+(2*6)+(1*2)=123
123 % 10 = 3
So 133735-62-3 is a valid CAS Registry Number.

133735-62-3Relevant articles and documents

Amino-Alcohols, I: A Method for the Synthesis of Enantiomerically Pure 1,2-Aminoalcohols with erythro-Configuration

Noe, Christian R.,Knollmueller, Max,Goestl, Georg,Gaertner, Peter

, p. 283 - 290 (2007/10/02)

The synthesis of both enantiomers of norephedrine and norisoephedrine is described to present a method for the preparation of enantiomerically pure branched 1,2-aminoalcohols.In a one pot reaction enantiomerically pure cyanohydrins bearing an acetal protective group are subjected to Grignard-reaction followed by addition of lithium aluminium hydride.After deprotection the target compounds are obtained.

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