3907-77-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 3907-77-5 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 3,9,0 and 7 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 3907-77:
(6*3)+(5*9)+(4*0)+(3*7)+(2*7)+(1*7)=105
105 % 10 = 5
So 3907-77-5 is a valid CAS Registry Number.