121661-26-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 121661-26-5 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 1 respectively; the second part has 2 digits, 2 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 121661-26:
(8*1)+(7*2)+(6*1)+(5*6)+(4*6)+(3*1)+(2*2)+(1*6)=95
95 % 10 = 5
So 121661-26-5 is a valid CAS Registry Number.