219986-54-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 219986-54-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,9,9,8 and 6 respectively; the second part has 2 digits, 5 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 219986-54:
(8*2)+(7*1)+(6*9)+(5*9)+(4*8)+(3*6)+(2*5)+(1*4)=186
186 % 10 = 6
So 219986-54-6 is a valid CAS Registry Number.