1216284-09-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1216284-09-1 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,1,6,2,8 and 4 respectively; the second part has 2 digits, 0 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 1216284-09:
(9*1)+(8*2)+(7*1)+(6*6)+(5*2)+(4*8)+(3*4)+(2*0)+(1*9)=131
131 % 10 = 1
So 1216284-09-1 is a valid CAS Registry Number.