72683-89-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 72683-89-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,2,6,8 and 3 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 72683-89:
(7*7)+(6*2)+(5*6)+(4*8)+(3*3)+(2*8)+(1*9)=157
157 % 10 = 7
So 72683-89-7 is a valid CAS Registry Number.