39639-49-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 39639-49-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,9,6,3 and 9 respectively; the second part has 2 digits, 4 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 39639-49:
(7*3)+(6*9)+(5*6)+(4*3)+(3*9)+(2*4)+(1*9)=161
161 % 10 = 1
So 39639-49-1 is a valid CAS Registry Number.