71566-25-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 71566-25-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,1,5,6 and 6 respectively; the second part has 2 digits, 2 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 71566-25:
(7*7)+(6*1)+(5*5)+(4*6)+(3*6)+(2*2)+(1*5)=131
131 % 10 = 1
So 71566-25-1 is a valid CAS Registry Number.
InChI:InChI=1/C56H68N12O8S4.Cu/c1-7-13-17-35(11-5)33-59-79(73,74)39-21-25-43-47(31-39)55-65-49-41-23-19-37(77(69,70)57-27-15-9-3)29-45(41)54(61-49)64-52-44-26-22-40(80(75,76)60-34-36(12-6)18-14-8-2)32-48(44)56(68-52)66-50-42-24-20-38(78(71,72)58-28-16-10-4)30-46(42)53(62-50)63-51(43)67-55;/h19-26,29-32,35-36,57-60H,7-18,27-28,33-34H2,1-6H3;/q-2;+2