219646-72-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 219646-72-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,9,6,4 and 6 respectively; the second part has 2 digits, 7 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 219646-72:
(8*2)+(7*1)+(6*9)+(5*6)+(4*4)+(3*6)+(2*7)+(1*2)=157
157 % 10 = 7
So 219646-72-7 is a valid CAS Registry Number.