18921-66-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 18921-66-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,8,9,2 and 1 respectively; the second part has 2 digits, 6 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 18921-66:
(7*1)+(6*8)+(5*9)+(4*2)+(3*1)+(2*6)+(1*6)=129
129 % 10 = 9
So 18921-66-9 is a valid CAS Registry Number.
InChI:InChI=1/C24H28N6O5/c1-3-34-20(31)12-19(23(33)35-4-2)28-22(32)15-6-8-16(9-7-15)27-13-14-5-10-18-17(11-14)21(25)30-24(26)29-18/h5-11,19,27H,3-4,12-13H2,1-2H3,(H,28,32)(H4,25,26,29,30)/t19-/m0/s1