136258-50-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 136258-50-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,6,2,5 and 8 respectively; the second part has 2 digits, 5 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 136258-50:
(8*1)+(7*3)+(6*6)+(5*2)+(4*5)+(3*8)+(2*5)+(1*0)=129
129 % 10 = 9
So 136258-50-9 is a valid CAS Registry Number.
136258-50-9Relevant academic research and scientific papers
PYRIDAZINE DERIVATIVES AND RELATED COMPOUNDS. PART 5. PYRAZOLOPYRIDAZINE: SYNTHESIS AND SOME REACTIONS
Deeb, Ali,Bayoumy, Besher,Essawy, Abd El-Naby,Fikry, Rida
, p. 895 - 900 (2007/10/02)
This paper decsribes the synthesis of three pyrimidopyrazolopyridazines (6,7 and 9) starting from 3-aminopyridazine (1).Pyrimidopyrimidopyrazolopyridazine derivative (8) was obtained by condensing 7a w
