81591-68-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 81591-68-6 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 8 respectively.
Calculate Digit Verification of CAS Registry Number 81591-68:
(7*8)+(6*1)+(5*5)+(4*9)+(3*1)+(2*6)+(1*8)=146
146 % 10 = 6
So 81591-68-6 is a valid CAS Registry Number.
InChI:InChI=1/C33H54N2O3/c1-3-5-7-9-10-11-12-13-14-15-16-17-18-24-32(36)35-31(33(37)38-25-21-8-6-4-2)26-28-27-34-30-23-20-19-22-29(28)30/h19-20,22-23,27,31,34H,3-18,21,24-26H2,1-2H3,(H,35,36)/t31-/m0/s1