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388573-33-9

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388573-33-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 388573-33-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,8,8,5,7 and 3 respectively; the second part has 2 digits, 3 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 388573-33:
(8*3)+(7*8)+(6*8)+(5*5)+(4*7)+(3*3)+(2*3)+(1*3)=199
199 % 10 = 9
So 388573-33-9 is a valid CAS Registry Number.

388573-33-9Relevant articles and documents

Concise total syntheses of variolin B and deoxyvariolin B

Anderson, Regan J.,Hill, Jonathan B.,Morris, Jonathan C.

, p. 6204 - 6212 (2007/10/03)

The total synthesis of the marine alkaloid variolin B has been achieved in 8 steps and 17% overall yield, starting from commercially available 4-chloro-2-methylthiopyrimidine. The key reaction involves the tandem deoxygenation and cyclization of a triarylmethanol using a combination of triethylsilane and trifluoroacetic acid. In addition, the deoxygenated analogue was prepared in 6 steps and 23% overall yield, starting from the same starting material.

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