89155-12-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 89155-12-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,9,1,5 and 5 respectively; the second part has 2 digits, 1 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 89155-12:
(7*8)+(6*9)+(5*1)+(4*5)+(3*5)+(2*1)+(1*2)=154
154 % 10 = 4
So 89155-12-4 is a valid CAS Registry Number.
89155-12-4Relevant articles and documents
THE ANNELATION OF THE 2-AMINOPYRAN-4-ONE RING TO CONDENSED THIOPHENES
Volovenko, Yu. M.,Litenko, V. A.,Khrapak, T. V.,Babichev, F. S.
, p. 1167 - 1169 (2007/10/02)
The reaction of arylacetonitriles with the methyl ester of 3-hydroxybenzothiophene-2-carboxylic acid in the presence of a basic catalyst leads to the previously unreported 2-amino-3-arylbenzothienopyran-4-ones.Under the same conditions, the
