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287980-03-4

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287980-03-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 287980-03-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,8,7,9,8 and 0 respectively; the second part has 2 digits, 0 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 287980-03:
(8*2)+(7*8)+(6*7)+(5*9)+(4*8)+(3*0)+(2*0)+(1*3)=194
194 % 10 = 4
So 287980-03-4 is a valid CAS Registry Number.

287980-03-4Relevant articles and documents

An efficient total synthesis of (-)-vindoline

Kobayashi, Satoshi,Ueda, Toshihiro,Fukuyama, Tohru

, p. 883 - 886 (2007/10/03)

A highly efficient total synthesis of the title compound is described. Our synthesis features a highly efficient preparation of the key intermediate 11 using our novel indole synthesis methodology. A novel amine protecting protocol by means of 2,4-dinitrobenzenesulfonamides has been developed to ensure the formation of the elusive secodine-type intermediate 15 under very mild conditions.

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