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81038-30-4

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81038-30-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 81038-30-4 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, 3 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 81038-30:
(7*8)+(6*1)+(5*0)+(4*3)+(3*8)+(2*3)+(1*0)=104
104 % 10 = 4
So 81038-30-4 is a valid CAS Registry Number.

81038-30-4Relevant 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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