305804-86-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 305804-86-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,0,5,8,0 and 4 respectively; the second part has 2 digits, 8 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 305804-86:
(8*3)+(7*0)+(6*5)+(5*8)+(4*0)+(3*4)+(2*8)+(1*6)=128
128 % 10 = 8
So 305804-86-8 is a valid CAS Registry Number.
305804-86-8Relevant academic research and scientific papers
1-Amino triazoloc4,3-a! quinazoline-5-ones and/or -5-thiones inhibiting phosphodiesterase IV
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Page column 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