643752-77-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 643752-77-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,4,3,7,5 and 2 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 643752-77:
(8*6)+(7*4)+(6*3)+(5*7)+(4*5)+(3*2)+(2*7)+(1*7)=176
176 % 10 = 6
So 643752-77-6 is a valid CAS Registry Number.