72187-20-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 72187-20-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,2,1,8 and 7 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 72187-20:
(7*7)+(6*2)+(5*1)+(4*8)+(3*7)+(2*2)+(1*0)=123
123 % 10 = 3
So 72187-20-3 is a valid CAS Registry Number.
InChI:InChI=1/C20H20N2O8S2.2Na/c21-15-13-14(18(24)12-9-5-4-8-11(12)17(13)23)16(22-10-6-2-1-3-7-10)20(32(28,29)30)19(15)31(25,26)27;;/h4-5,8-10,22H,1-3,6-7,21H2,(H,25,26,27)(H,28,29,30);;/q;2*+1/p-2