2900-65-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 2900-65-4 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 2,9,0 and 0 respectively; the second part has 2 digits, 6 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 2900-65:
(6*2)+(5*9)+(4*0)+(3*0)+(2*6)+(1*5)=74
74 % 10 = 4
So 2900-65-4 is a valid CAS Registry Number.