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252233-59-3

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252233-59-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 252233-59-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,5,2,2,3 and 3 respectively; the second part has 2 digits, 5 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 252233-59:
(8*2)+(7*5)+(6*2)+(5*2)+(4*3)+(3*3)+(2*5)+(1*9)=113
113 % 10 = 3
So 252233-59-3 is a valid CAS Registry Number.

252233-59-3Relevant articles and documents

Optimization of substituted N-3-benzylimidazoquinazolinone sulfonamides as potent and selective PDE5 inhibitors

Rotella,Sun,Zhu,Krupinski,Pongrac,Seliger,Normandin,Macor

, p. 5037 - 5043 (2007/10/03)

A previous report from these laboratories identified the N-3-benzylimidazoquinazolinone nucleus as a more selective PDE5 inhibitor template compared to the pyrazolopyrimidine of sildenafil. This paper describes in detail the structure-activity relationshi

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