7623-05-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 7623-05-4 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 7,6,2 and 3 respectively; the second part has 2 digits, 0 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 7623-05:
(6*7)+(5*6)+(4*2)+(3*3)+(2*0)+(1*5)=94
94 % 10 = 4
So 7623-05-4 is a valid CAS Registry Number.