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190451-39-9

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190451-39-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 190451-39-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,0,4,5 and 1 respectively; the second part has 2 digits, 3 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 190451-39:
(8*1)+(7*9)+(6*0)+(5*4)+(4*5)+(3*1)+(2*3)+(1*9)=129
129 % 10 = 9
So 190451-39-9 is a valid CAS Registry Number.

190451-39-9Relevant articles and documents

Simple approach to optically active drimane sesquiterpenes based on enzymatic resolution

Akita, Hiroyuki,Nozawa, Masako,Futagami, Yoshiko,Miyamoto, Maiko,Saotome, Chikako

, p. 824 - 831 (1997)

When the β-acyloxy esters (±)-10 and (±)-II were exposed to the lipase OF-360 from Candida rugosa or immobilized lipase OF-360 in a water- saturated organic solvent, the hydrolyzed product (8aS)-6 was obtained in high chemical (40%) and optical (>99%ee) yields. The absolute structure of (8aS)-6 was confirmed by the fact that (8aS)-6 was converted into an authentic sample γ-keto nitrile (8aS)-17. Treatment of the diol (±)-12 with isopropenyl acetate in the presence of the lipase Godo E-4 from Pseudomonas sp. provided the unchanged (8aR)-12 (89% ee) in 42% yield.

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