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639011-08-8

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639011-08-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 639011-08-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,3,9,0,1 and 1 respectively; the second part has 2 digits, 0 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 639011-08:
(8*6)+(7*3)+(6*9)+(5*0)+(4*1)+(3*1)+(2*0)+(1*8)=138
138 % 10 = 8
So 639011-08-8 is a valid CAS Registry Number.

639011-08-8Relevant articles and documents

Spiroborate ester-mediated asymmetric synthesis of β-hydroxy ethers and its conversion to highly enantiopure β-amino ethers

Huang, Kun,Ortiz-Marciales, Margarita,Correa, Wildeliz,Pomales, Edgardo,Lopez, Xaira Y.

experimental part, p. 4195 - 4202 (2009/09/25)

(Chemical Equation Presented) Borane-mediated reduction of aryl and alkyl ketones with α-aryl- and α-pyridyloxy groups affords β-hydroxy ethers in high enantiomeric purity (up to 99% ee) and in good yield, using as catalyst 10 mol % of spiroborate ester 1

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