643726-97-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 643726-97-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,4,3,7,2 and 6 respectively; the second part has 2 digits, 9 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 643726-97:
(8*6)+(7*4)+(6*3)+(5*7)+(4*2)+(3*6)+(2*9)+(1*7)=180
180 % 10 = 0
So 643726-97-0 is a valid CAS Registry Number.