61641-43-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 61641-43-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,1,6,4 and 1 respectively; the second part has 2 digits, 4 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 61641-43:
(7*6)+(6*1)+(5*6)+(4*4)+(3*1)+(2*4)+(1*3)=108
108 % 10 = 8
So 61641-43-8 is a valid CAS Registry Number.
InChI:InChI=1/C16H14N4O/c1-21-14-8-6-12(7-9-14)10-17-19-16-15-5-3-2-4-13(15)11-18-20-16/h2-11H,1H3,(H,19,20)/b17-10+
61641-43-8Relevant academic research and scientific papers
s-Triazolo[3,4-a]phthalazines from 1-phthalazinylhydrazones by thianthrene cation radical perchlorate
Park, Koon Ha,Jun, Kun,Shin, Seung Rim,Oh, Sea Wha
, p. 583 - 589 (2007/10/03)
1-Phthalazinylhydrazones 4 gave s-triazolo[3,4-a]phthalazines 5 in 94- 98% yields by thianthrene cation radical perchlorate (Th+(·)ClO4-).