219560-21-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 219560-21-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,9,5,6 and 0 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 219560-21:
(8*2)+(7*1)+(6*9)+(5*5)+(4*6)+(3*0)+(2*2)+(1*1)=131
131 % 10 = 1
So 219560-21-1 is a valid CAS Registry Number.
219560-21-1Relevant articles and documents
Synthesis and polymerization of 6-(alkyloxyphenyl)carbonyl substituted spirobenzopyran
Choi, Yoon-Ki,Kim, Eunkyoung,Keum, Sam-Rok
, p. 8861 - 8864 (1998)
6-(Alkyloxyphenyl)carbonyl substituted spirobenzopyran (COSP) was synthesized from 6-(hydroxyphenylcarbonyl)substituted salicylaldehyde and indoline, followed by alkylhydroxylation with 6-chloro-1-hexanol. Resulting COSP was modified to a methacryloyl sub
