121816-47-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 121816-47-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,1,8,1 and 6 respectively; the second part has 2 digits, 4 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 121816-47:
(8*1)+(7*2)+(6*1)+(5*8)+(4*1)+(3*6)+(2*4)+(1*7)=105
105 % 10 = 5
So 121816-47-5 is a valid CAS Registry Number.