20981-12-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 20981-12-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,0,9,8 and 1 respectively; the second part has 2 digits, 1 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 20981-12:
(7*2)+(6*0)+(5*9)+(4*8)+(3*1)+(2*1)+(1*2)=98
98 % 10 = 8
So 20981-12-8 is a valid CAS Registry Number.
InChI:InChI=1/C39H28F3N5O5/c1-52-33-19-14-25(37(50)45-29-12-7-11-26(22-29)39(40,41)42)21-32(33)46-47-34-30-13-6-5-10-24(30)20-31(35(34)48)38(51)44-28-17-15-27(16-18-28)43-36(49)23-8-3-2-4-9-23/h2-22,48H,1H3,(H,43,49)(H,44,51)(H,45,50)