261771-29-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 261771-29-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,6,1,7,7 and 1 respectively; the second part has 2 digits, 2 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 261771-29:
(8*2)+(7*6)+(6*1)+(5*7)+(4*7)+(3*1)+(2*2)+(1*9)=143
143 % 10 = 3
So 261771-29-3 is a valid CAS Registry Number.
261771-29-3Relevant articles and documents
Substituted pyrazolopyridines as potent and selective PDE5 inhibitors: Potential agents for treatment of erectile dysfunction
Yu,Mason,Wu,Wang,Chong,Dorough,Henwood,Pongrac,Seliger,He,Normandin,Adam,Krupinski,Macor
, p. 1025 - 1027 (2001)
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Fused pyridine inhibitors of cGMP phosphodiesterase
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, (2008/06/13)
Compounds of the formulas are useful as inhibitors of cGMP PDE, especially type V.