720716-22-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 720716-22-3 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 6 respectively; the second part has 2 digits, 2 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 720716-22:
(8*7)+(7*2)+(6*0)+(5*7)+(4*1)+(3*6)+(2*2)+(1*2)=133
133 % 10 = 3
So 720716-22-3 is a valid CAS Registry Number.
720716-22-3Relevant academic research and scientific papers
NEW PYRIDAZIN-3(2H)-ONE DERIVATIVES
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Page 38; 127, (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.
