35977-17-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 35977-17-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,5,9,7 and 7 respectively; the second part has 2 digits, 1 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 35977-17:
(7*3)+(6*5)+(5*9)+(4*7)+(3*7)+(2*1)+(1*7)=154
154 % 10 = 4
So 35977-17-4 is a valid CAS Registry Number.
35977-17-4Relevant articles and documents
1-Amino triazoloc4,3-a! quinazoline-5-ones and/or -5-thiones inhibiting phosphodiesterase IV
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Page column 109-110, (2010/02/09)
The present invention relates to triazolo[4,3-a]quinazoline-5-ones and 5-thiones of Formula I and Formula II, whereby I and II are position isomers of group R on nitrogen 3 or 4. Optionally, the invention also relates to the racemic forms, isomers and pha