1643372-77-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1643372-77-3 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,6,4,3,3,7 and 2 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 1643372-77:
(9*1)+(8*6)+(7*4)+(6*3)+(5*3)+(4*7)+(3*2)+(2*7)+(1*7)=173
173 % 10 = 3
So 1643372-77-3 is a valid CAS Registry Number.