121643-49-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 121643-49-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,1,6,4 and 3 respectively; the second part has 2 digits, 4 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 121643-49:
(8*1)+(7*2)+(6*1)+(5*6)+(4*4)+(3*3)+(2*4)+(1*9)=100
100 % 10 = 0
So 121643-49-0 is a valid CAS Registry Number.