99661-60-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 99661-60-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,9,6,6 and 1 respectively; the second part has 2 digits, 6 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 99661-60:
(7*9)+(6*9)+(5*6)+(4*6)+(3*1)+(2*6)+(1*0)=186
186 % 10 = 6
So 99661-60-6 is a valid CAS Registry Number.