1212158-45-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1212158-45-6 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,1,2,1,5 and 8 respectively; the second part has 2 digits, 4 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 1212158-45:
(9*1)+(8*2)+(7*1)+(6*2)+(5*1)+(4*5)+(3*8)+(2*4)+(1*5)=106
106 % 10 = 6
So 1212158-45-6 is a valid CAS Registry Number.