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81038-41-7

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81038-41-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 81038-41-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,0,3 and 8 respectively; the second part has 2 digits, 4 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 81038-41:
(7*8)+(6*1)+(5*0)+(4*3)+(3*8)+(2*4)+(1*1)=107
107 % 10 = 7
So 81038-41-7 is a valid CAS Registry Number.

81038-41-7Relevant articles and documents

New total synthesis of (±)-chuangxinmycin

Kato, Keisuke,Ono, Machiko,Akita, Hiroyuki

, p. 1805 - 1808 (2007/10/03)

(±)-4'-Iodoindolmycenate 6 was stereoselectively converted into the (±)-(2,3)-syn-2-thioacetoxy ester 16 with retention of C2-stereochemistry in (±)-6. Palladium-catalysed cyclisation of indolyl iodide and the internal C2 thiol group of the substrate (±)-17 derived from (±)-16 gave the (±)-cis methyl ester 2 of natural chuangxinmycin (1).

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