81548-21-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 81548-21-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,5,4 and 8 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 81548-21:
(7*8)+(6*1)+(5*5)+(4*4)+(3*8)+(2*2)+(1*1)=132
132 % 10 = 2
So 81548-21-2 is a valid CAS Registry Number.
81548-21-2Relevant articles and documents
ADDITION OF NITRILES TO OXETANES
Pavel', T. M.
, p. 157 - 159 (2007/10/02)
The reaction of oxetanes with acrylonitrile and benzonitrile in the presence of concentrated sulfuric acid leads to the formation of the corresponding 5,6-dihydro-1,3-oxazines.
