720717-83-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 720717-83-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 7,2,0,7,1 and 7 respectively; the second part has 2 digits, 8 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 720717-83:
(8*7)+(7*2)+(6*0)+(5*7)+(4*1)+(3*7)+(2*8)+(1*3)=149
149 % 10 = 9
So 720717-83-9 is a valid CAS Registry Number.
720717-83-9Relevant academic research and scientific papers
NEW PYRIDAZIN-3(2H)-ONE DERIVATIVES
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Page 178, (2008/06/13)
Pyridazin-3(2H)-one derivatives of formula (I) are found to inhibit PDE-4:, wherein R1, R2 and R4 are organic radicals, R3 is a cyclic group, and R5 is an ester or an aryl or heteroaryl group.
