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Acetic acid (1S,5S)-3-ethynyl-5-hydroxy-4-methyl-cyclohex-3-enyl ester is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

169438-00-0

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169438-00-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 169438-00-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,6,9,4,3 and 8 respectively; the second part has 2 digits, 0 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 169438-00:
(8*1)+(7*6)+(6*9)+(5*4)+(4*3)+(3*8)+(2*0)+(1*0)=160
160 % 10 = 0
So 169438-00-0 is a valid CAS Registry Number.

169438-00-0Relevant articles and documents

Selective acylation of A-ring precursors of vitamin D using enzymes in organic solvents

Fernandez,Ferrero,Gotor,Okamura

, p. 6057 - 6061 (1995)

Whereas Chromobacterium viscosum lipase (CVL) catalyzes selectively the acylation of the C-5 hydroxyl of the three stereoisomeric vitamin D A-ring precursors 2a, 3a and 3b, only the C-3 hydroxyl of the fourth stereoisomer 2b is acylated under the same conditions in organic solvent. In a convenient application, the racemic vitamin D A-ring precursor 4, possessing only the C-5 hydroxyl, was resolved using suitable conditions identified from the studies of 2 and 3.

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