1216647-67-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1216647-67-4 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,1,6,6,4 and 7 respectively; the second part has 2 digits, 6 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 1216647-67:
(9*1)+(8*2)+(7*1)+(6*6)+(5*6)+(4*4)+(3*7)+(2*6)+(1*7)=154
154 % 10 = 4
So 1216647-67-4 is a valid CAS Registry Number.