121604-55-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 121604-55-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,1,6,0 and 4 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 121604-55:
(8*1)+(7*2)+(6*1)+(5*6)+(4*0)+(3*4)+(2*5)+(1*5)=85
85 % 10 = 5
So 121604-55-5 is a valid CAS Registry Number.