139313-20-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 139313-20-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,9,3,1 and 3 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 139313-20:
(8*1)+(7*3)+(6*9)+(5*3)+(4*1)+(3*3)+(2*2)+(1*0)=115
115 % 10 = 5
So 139313-20-5 is a valid CAS Registry Number.
139313-20-5Relevant articles and documents
1,3-Dipolar Cycloaddition of 5,6-Dihydroimidazothiazolium Betaines
Kim, Dong Jin,Yoo, Kyung Ho,Park, Sang Woo
, p. 2347 - 2352 (2007/10/02)
5,6-Dihydroimidazothiazolium betains were generated in situ from 3,7-disubstituted 5,6-dihydroimidazothiazolium bromides and triethlyamine.The reaction of these imidazothiazolium betaines with acetylenic dipolarophiles, such as ethyl propiol
