203719-62-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 203719-62-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,3,7,1 and 9 respectively; the second part has 2 digits, 6 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 203719-62:
(8*2)+(7*0)+(6*3)+(5*7)+(4*1)+(3*9)+(2*6)+(1*2)=114
114 % 10 = 4
So 203719-62-4 is a valid CAS Registry Number.