25431-18-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 25431-18-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,5,4,3 and 1 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 25431-18:
(7*2)+(6*5)+(5*4)+(4*3)+(3*1)+(2*1)+(1*8)=89
89 % 10 = 9
So 25431-18-9 is a valid CAS Registry Number.
InChI:InChI=1/C21H18N2O7S2/c22-17-10-8-14(19(12-17)31(25,26)27)6-7-15-9-11-18(13-20(15)32(28,29)30)23-21(24)16-4-2-1-3-5-16/h1-13H,22H2,(H,23,24)(H,25,26,27)(H,28,29,30)/b7-6+