1221272-80-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1221272-80-5 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,2,1,2,7 and 2 respectively; the second part has 2 digits, 8 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 1221272-80:
(9*1)+(8*2)+(7*2)+(6*1)+(5*2)+(4*7)+(3*2)+(2*8)+(1*0)=105
105 % 10 = 5
So 1221272-80-5 is a valid CAS Registry Number.