155694-31-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 155694-31-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,5,6,9 and 4 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 155694-31:
(8*1)+(7*5)+(6*5)+(5*6)+(4*9)+(3*4)+(2*3)+(1*1)=158
158 % 10 = 8
So 155694-31-8 is a valid CAS Registry Number.
155694-31-8Relevant articles and documents
A Stereoselective Synthesis of (-)-Isoiridomyrmecin. Application of the Asymmetric Aza-Claisen Rearrangement
Tsunoda, Tetsuto,Tatsuki, Shinji,Kataoka, Kazuko,Ito, Sho
, p. 543 - 546 (2007/10/02)
(-)-Isoiridomyrmecin was synthesized stereoselectively in 6 steps starting from 1-hydroxymethyl-5-methylcyclopentene and utilizing the asymmetric aza-Claisen rearrangement as a key step.