198994-52-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 198994-52-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,8,9,9 and 4 respectively; the second part has 2 digits, 5 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 198994-52:
(8*1)+(7*9)+(6*8)+(5*9)+(4*9)+(3*4)+(2*5)+(1*2)=224
224 % 10 = 4
So 198994-52-4 is a valid CAS Registry Number.