1219815-54-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1219815-54-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,1,9,8,1 and 5 respectively; the second part has 2 digits, 5 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 1219815-54:
(9*1)+(8*2)+(7*1)+(6*9)+(5*8)+(4*1)+(3*5)+(2*5)+(1*4)=159
159 % 10 = 9
So 1219815-54-9 is a valid CAS Registry Number.