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193686-17-8

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193686-17-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 193686-17-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,3,6,8 and 6 respectively; the second part has 2 digits, 1 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 193686-17:
(8*1)+(7*9)+(6*3)+(5*6)+(4*8)+(3*6)+(2*1)+(1*7)=178
178 % 10 = 8
So 193686-17-8 is a valid CAS Registry Number.

193686-17-8Relevant articles and documents

Preparation of chiral right-half models of antitumor bistetrahydroisoquinolinequinone natural products

Senbonmatsu, Yuki,Kimura, Shinya,Akiba, Megumi,Ando, Shingo,Saito, Naoki

, p. 1050 - 1067 (2019/07/31)

– The preparation of chiral right-half model compounds of bistetrahydroisoquinolinequinone natural products having a lactam carbonyl group (-)-1 or an aminonitrile group (+)-2 from (-)-14 was presented. The crucial steps of this synthesis include the N-methylation of compound (-)-12 and ring closure to generate (-)-19a without any epimerization at C-2.1

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