1219956-89-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1219956-89-4 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,1,9,9,5 and 6 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 1219956-89:
(9*1)+(8*2)+(7*1)+(6*9)+(5*9)+(4*5)+(3*6)+(2*8)+(1*9)=194
194 % 10 = 4
So 1219956-89-4 is a valid CAS Registry Number.