1228897-34-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1228897-34-4 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,2,8,8,9 and 7 respectively; the second part has 2 digits, 3 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 1228897-34:
(9*1)+(8*2)+(7*2)+(6*8)+(5*8)+(4*9)+(3*7)+(2*3)+(1*4)=194
194 % 10 = 4
So 1228897-34-4 is a valid CAS Registry Number.