18921-70-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 18921-70-5 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, 7 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 18921-70:
(7*1)+(6*8)+(5*9)+(4*2)+(3*1)+(2*7)+(1*0)=125
125 % 10 = 5
So 18921-70-5 is a valid CAS Registry Number.
InChI:InChI=1/C21H22N6O5.2Na/c1-10-12(4-7-14-17(10)18(22)27-21(23)26-14)9-24-13-5-2-11(3-6-13)19(30)25-15(20(31)32)8-16(28)29;;/h2-7,15,24H,8-9H2,1H3,(H,25,30)(H,28,29)(H,31,32)(H4,22,23,26,27);;/q;2*+1/p-2