81591-69-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 81591-69-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,5,9 and 1 respectively; the second part has 2 digits, 6 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 81591-69:
(7*8)+(6*1)+(5*5)+(4*9)+(3*1)+(2*6)+(1*9)=147
147 % 10 = 7
So 81591-69-7 is a valid CAS Registry Number.
InChI:InChI=1/C28H32N2O4S/c1-20(2)29-18-22(19-33-27-16-7-11-21-10-5-6-12-23(21)27)34-35(31,32)28-17-9-13-24-25(28)14-8-15-26(24)30(3)4/h5-17,20,22,29H,18-19H2,1-4H3