1332721-91-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1332721-91-1 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,3,3,2,7,2 and 1 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1332721-91:
(9*1)+(8*3)+(7*3)+(6*2)+(5*7)+(4*2)+(3*1)+(2*9)+(1*1)=131
131 % 10 = 1
So 1332721-91-1 is a valid CAS Registry Number.