1257321-19-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1257321-19-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,5,7,3,2 and 1 respectively; the second part has 2 digits, 1 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 1257321-19:
(9*1)+(8*2)+(7*5)+(6*7)+(5*3)+(4*2)+(3*1)+(2*1)+(1*9)=139
139 % 10 = 9
So 1257321-19-9 is a valid CAS Registry Number.