139927-86-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 139927-86-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,9,9,2 and 7 respectively; the second part has 2 digits, 8 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 139927-86:
(8*1)+(7*3)+(6*9)+(5*9)+(4*2)+(3*7)+(2*8)+(1*6)=179
179 % 10 = 9
So 139927-86-9 is a valid CAS Registry Number.
InChI:InChI=1/C19H16N4O2/c24-18-16-17(20-13-22(16)11-14-7-3-1-4-8-14)23(19(25)21-18)12-15-9-5-2-6-10-15/h1-10,13H,11-12H2,(H,21,24,25)
139927-86-9Relevant articles and documents
Xanthine derivatives, the preparation thereof and their use as pharmaceutical compositions
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, (2008/06/13)
The present invention relates to substituted xanthines of general formula wherein R1 to R4 are defined as in claim 1, the tautomers and the stereoisomers thereof, mixtures thereof, the prodrugs and the salts thereof which have valuable pharmacological properties, particularly an inhibiting effect on the activity of the enzyme dipeptidylpeptidase-IV (DPP-IV).