91227-04-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 91227-04-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,1,2,2 and 7 respectively; the second part has 2 digits, 0 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 91227-04:
(7*9)+(6*1)+(5*2)+(4*2)+(3*7)+(2*0)+(1*4)=112
112 % 10 = 2
So 91227-04-2 is a valid CAS Registry Number.
91227-04-2Relevant articles and documents
IODINATION OF 6-ARYL-2-PYRONES
Sokolovskaya, S. V.,Moldovanova, L. K.
, p. 492 - 494 (1984)
The iodination of 6-aryl-2-pyrones with iodine chloride in glacial acetic acid leads to the corresponding 3-iodo derivatives. 3-Cyano-6-phenyl-2-pyrone and 3-phenylethynyl-6-phenyl-2-pyrone were obtained by replacement of the iodo group by cyano and phenylethynyl groups.
