74900-56-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 74900-56-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,4,9,0 and 0 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 74900-56:
(7*7)+(6*4)+(5*9)+(4*0)+(3*0)+(2*5)+(1*6)=134
134 % 10 = 4
So 74900-56-4 is a valid CAS Registry Number.