121667-04-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 121667-04-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,1,6,6 and 7 respectively; the second part has 2 digits, 0 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 121667-04:
(8*1)+(7*2)+(6*1)+(5*6)+(4*6)+(3*7)+(2*0)+(1*4)=107
107 % 10 = 7
So 121667-04-7 is a valid CAS Registry Number.