1159020-21-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1159020-21-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,1,5,9,0,2 and 0 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1159020-21:
(9*1)+(8*1)+(7*5)+(6*9)+(5*0)+(4*2)+(3*0)+(2*2)+(1*1)=119
119 % 10 = 9
So 1159020-21-9 is a valid CAS Registry Number.
1159020-21-9Relevant articles and documents
Direct sulfanylation of 4-hydroxycoumarins with thiols in water
Peng, Yi-Yuan,Wen, Yanfang,Mao, Xuechun,Qiu, Guanyinsheng
, p. 2405 - 2406 (2009)
The direct sulfanylation of 4-hydroxycoumarins with thiols via C-OH bond activation in water under mild conditions is described, which afforded the corresponding 4-sulfanylcoumarins in good yields.