121807-13-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 121807-13-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,1,8,0 and 7 respectively; the second part has 2 digits, 1 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 121807-13:
(8*1)+(7*2)+(6*1)+(5*8)+(4*0)+(3*7)+(2*1)+(1*3)=94
94 % 10 = 4
So 121807-13-4 is a valid CAS Registry Number.