81547-21-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 81547-21-9 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 7 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 81547-21:
(7*8)+(6*1)+(5*5)+(4*4)+(3*7)+(2*2)+(1*1)=129
129 % 10 = 9
So 81547-21-9 is a valid CAS Registry Number.
81547-21-9Relevant academic research and scientific papers
Ring Transformation of Condensed Dihydro-as-triazines
Berenyi, E.,Benko, P.,Zolyomi, G.,Tamas, J.
, p. 1537 - 1540 (2007/10/02)
The 2-amino-as-triazinoquinoline as well as 3-aminopyrido-as-triazine had previously been synthesized by Berenyi (1) and Benko et al (2).In this paper, the ring transformation occuring in aqueous media of the dihydro intermediates and their
