1772-42-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1772-42-5 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,7,7 and 2 respectively; the second part has 2 digits, 4 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 1772-42:
(6*1)+(5*7)+(4*7)+(3*2)+(2*4)+(1*2)=85
85 % 10 = 5
So 1772-42-5 is a valid CAS Registry Number.