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53639-76-2

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53639-76-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 53639-76-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,3,6,3 and 9 respectively; the second part has 2 digits, 7 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 53639-76:
(7*5)+(6*3)+(5*6)+(4*3)+(3*9)+(2*7)+(1*6)=142
142 % 10 = 2
So 53639-76-2 is a valid CAS Registry Number.

53639-76-2Relevant articles and documents

REGIOCONTROLLED SYNTHESIS OF THE ERGOSTEROL B-ISOMERS

Dolle, Roland E.,Schmidt, Stanley J.,Kruse, Lawrence I.

, p. 1581 - 1582 (2007/10/02)

A novel, regiocontrolled synthesis of the ergosterol B-isomers, (1), (2) and (3) is described, the success of which was realized via the highly regioselective formation of intermediate trienoltriflates, (7), (8) and (9).

Improved preparation of (3β,5α,14α)-3-hydroxy-14-methylcholest-7-en-15-one. Synthesis of ergostenone and 20α-(hydroxymethyl)pregnenone analogues

Dolle,Kruse

, p. 4047 - 4053 (2007/10/02)

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