1257983-83-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1257983-83-7 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,5,7,9,8 and 3 respectively; the second part has 2 digits, 8 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 1257983-83:
(9*1)+(8*2)+(7*5)+(6*7)+(5*9)+(4*8)+(3*3)+(2*8)+(1*3)=207
207 % 10 = 7
So 1257983-83-7 is a valid CAS Registry Number.