121855-61-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 121855-61-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,1,8,5 and 5 respectively; the second part has 2 digits, 6 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 121855-61:
(8*1)+(7*2)+(6*1)+(5*8)+(4*5)+(3*5)+(2*6)+(1*1)=116
116 % 10 = 6
So 121855-61-6 is a valid CAS Registry Number.