Cas 138056-20-9,1-Diphenylphosphanyl-3-methyl-butan-2-ol

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Check Digit Verification of cas no

The CAS Registry Mumber 138056-20-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,8,0,5 and 6 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 138056-20:
(8*1)+(7*3)+(6*8)+(5*0)+(4*5)+(3*6)+(2*2)+(1*0)=119
119 % 10 = 9
So 138056-20-9 is a valid CAS Registry Number.

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138056-20-9Relevant articles and documents

2-Hydroxyalkyl Diphenylphosphines: Biocatalytic Resolution and Use as Ligands for Transition-metal Catalysts

Kagan, Henri B.,Tahar, Maurice,Fiaud, Jean-Claude

, p. 5959 - 5962 (2007/10/02)

Kinetic resolution of 2-hydroxyalkyldiphenylphosphines 1 by acylation with isopropenyl acetate was carried out under rabbit gastric lipase (RGL) catalysis to give optically active 1 and the corresponding acetate, the enantioselectivity factors E ranging from 10 to 20. Key words: 2-hydroxyalkyldiphenylphosphines; rabbit gastric lipase; kinetic resolution; biocatalysis; acylation

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138056-20-9