1212158-80-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1212158-80-9 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, 8 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 1212158-80:
(9*1)+(8*2)+(7*1)+(6*2)+(5*1)+(4*5)+(3*8)+(2*8)+(1*0)=109
109 % 10 = 9
So 1212158-80-9 is a valid CAS Registry Number.