139290-32-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 139290-32-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,9,2,9 and 0 respectively; the second part has 2 digits, 3 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 139290-32:
(8*1)+(7*3)+(6*9)+(5*2)+(4*9)+(3*0)+(2*3)+(1*2)=137
137 % 10 = 7
So 139290-32-7 is a valid CAS Registry Number.
139290-32-7Relevant articles and documents
Total Synthesis of (+)-Bicyclohumulenone
Fukuyama, Yoshiyasu,Hirono, Motoko,Kodama, Mitsuaki
, p. 167 - 170 (2007/10/02)
(+)-Bicyclohumulenone, a bicyclic sesquiterpene isolated from liverworts, was synthesized using stereoselective Simmons-Smith cyclopropanation and intramolecular alkylation of α-sulfenyl carbanion as key steps.