3621-74-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 3621-74-7 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 3,6,2 and 1 respectively; the second part has 2 digits, 7 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 3621-74:
(6*3)+(5*6)+(4*2)+(3*1)+(2*7)+(1*4)=77
77 % 10 = 7
So 3621-74-7 is a valid CAS Registry Number.