1321991-41-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1321991-41-6 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,3,2,1,9,9 and 1 respectively; the second part has 2 digits, 4 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1321991-41:
(9*1)+(8*3)+(7*2)+(6*1)+(5*9)+(4*9)+(3*1)+(2*4)+(1*1)=146
146 % 10 = 6
So 1321991-41-6 is a valid CAS Registry Number.