98632-97-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 98632-97-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,8,6,3 and 2 respectively; the second part has 2 digits, 9 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 98632-97:
(7*9)+(6*8)+(5*6)+(4*3)+(3*2)+(2*9)+(1*7)=184
184 % 10 = 4
So 98632-97-4 is a valid CAS Registry Number.
InChI:InChI=1/C6H11NO3/c1-3-5(8)7-4(2)6(9)10/h4H,3H2,1-2H3,(H,7,8)(H,9,10)
98632-97-4Relevant articles and documents
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Wieland et al.
, p. 194,199 (1957)
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Pharmaceutically active compounds
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, (2008/06/13)
There is provided compounds of formula I, wherein R1, R2, R3and Het1have meanings given in the description, which are useful in the curative and prophylactic treatment of medical conditions for which inhibition of a cyclic guanosine 3′,5′-monophosphate phosphodiesterase (e.g. cGMP PDE5) is desired.