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921207-71-8

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921207-71-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 921207-71-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 9,2,1,2,0 and 7 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 921207-71:
(8*9)+(7*2)+(6*1)+(5*2)+(4*0)+(3*7)+(2*7)+(1*1)=138
138 % 10 = 8
So 921207-71-8 is a valid CAS Registry Number.

921207-71-8Relevant articles and documents

De novo formal synthesis of (-)-apicularen A via an iterative asymmetric hydration sequence

Li, Miaosheng,O'Doherty, George A.

, p. 6087 - 6090 (2006)

(Chemical Equation Presented) A de novo approach to the formal total synthesis of the macrolide natural product (-)-apicularen A has been achieved in 18 steps'from achiral starting materials. Both the absolute and relative stereochemistries of apicularen A were introduced by a Sharpless asymmetric dihydroxylation, a π-allyl-palladium catalyzed reduction, a stereoselective reduction, and a base-promoted transannulation to install the C-9 stereocenter.

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