139308-57-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 139308-57-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,9,3,0 and 8 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 139308-57:
(8*1)+(7*3)+(6*9)+(5*3)+(4*0)+(3*8)+(2*5)+(1*7)=139
139 % 10 = 9
So 139308-57-9 is a valid CAS Registry Number.