72187-18-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 72187-18-9 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, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 72187-18:
(7*7)+(6*2)+(5*1)+(4*8)+(3*7)+(2*1)+(1*8)=129
129 % 10 = 9
So 72187-18-9 is a valid CAS Registry Number.
InChI:InChI=1/C34H30N2O8S2.2Na/c37-31-23-11-5-6-12-24(23)32(38)30-26(36-28-16-14-20-8-2-4-10-22(20)34(28)46(42,43)44)18-17-25(29(30)31)35-27-15-13-19-7-1-3-9-21(19)33(27)45(39,40)41;;/h1-12,17-18,27-28,33-36H,13-16H2,(H,39,40,41)(H,42,43,44);;/q;2*+1/p-2