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134721-22-5

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134721-22-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 134721-22-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,4,7,2 and 1 respectively; the second part has 2 digits, 2 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 134721-22:
(8*1)+(7*3)+(6*4)+(5*7)+(4*2)+(3*1)+(2*2)+(1*2)=105
105 % 10 = 5
So 134721-22-5 is a valid CAS Registry Number.

134721-22-5Relevant articles and documents

24. Synthesis of Aristotelia-Type Alkaloids Part VII Syntheses of (+/-)-Sorelline, (+/-)-Serratenone, and (+/-)-Aristotelin-19-one

Burkard, Stefan,Borschberg, Hans-Juerg

, p. 275 - 289 (1991)

The imine obtained by condensing indole-protected 2-(indol-3-yl)acetaldehyde (5) with the terpinylamine derivative (+/-)-4 was cyclized in 51percent yield to the 19-substituted hobartine derivative (+/-)-20 upon exposure to anhydrous HCOOH.This pivotal in

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