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249290-34-4

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249290-34-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 249290-34-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,4,9,2,9 and 0 respectively; the second part has 2 digits, 3 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 249290-34:
(8*2)+(7*4)+(6*9)+(5*2)+(4*9)+(3*0)+(2*3)+(1*4)=154
154 % 10 = 4
So 249290-34-4 is a valid CAS Registry Number.

249290-34-4Relevant articles and documents

Chemoenzymatic syntheses of (25R)- and (25S)-25-hydroxy-27-nor- cholesterol, a steroid bearing a secondary hydroxy group in the side chain

Ferraboschi, Patrizia,Pecora, Fabio,Reza-Elahi, Shahrzad,Santaniello, Enzo

, p. 2497 - 2500 (1999)

(25R)- and (25S)-25-hydroxy-27-nor-cholesterol 1c were prepared by enzymatic resolution of the stereogenic center in the side chain of compound 4a or by synthesis of the side chain using, as a chiral synthon, the enantiomerically pure phenylsulfonyl alkan

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