139723-30-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 139723-30-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,9,7,2 and 3 respectively; the second part has 2 digits, 3 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 139723-30:
(8*1)+(7*3)+(6*9)+(5*7)+(4*2)+(3*3)+(2*3)+(1*0)=141
141 % 10 = 1
So 139723-30-1 is a valid CAS Registry Number.