219879-89-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 219879-89-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,9,8,7 and 9 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 219879-89:
(8*2)+(7*1)+(6*9)+(5*8)+(4*7)+(3*9)+(2*8)+(1*9)=197
197 % 10 = 7
So 219879-89-7 is a valid CAS Registry Number.