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254736-51-1

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254736-51-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 254736-51-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,5,4,7,3 and 6 respectively; the second part has 2 digits, 5 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 254736-51:
(8*2)+(7*5)+(6*4)+(5*7)+(4*3)+(3*6)+(2*5)+(1*1)=151
151 % 10 = 1
So 254736-51-1 is a valid CAS Registry Number.

254736-51-1Relevant articles and documents

Total synthesis of optically active costaclavine (synthetic studies of indoles and related compounds part 48.)

Osanai, Kumi,Yokoyama, Yuusaku,Kondo, Kazuhiro,Murakami, Yasuoki

, p. 1587 - 1590 (2007/10/03)

The first total synthesis of optically active costaclavine (18), an ergot alkaloid, was accomplished starting from methyl [4R-(Z)]-[4-[[(1,1- dimethylethoxy)carbonyl]methylamino]-3,4-dihydro-1-[(4- methylphenyl)sulfonyl]benz[cd]indol-5(1H)-ylidene]acetate

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