40302-91-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 40302-91-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,0,3,0 and 2 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 40302-91:
(7*4)+(6*0)+(5*3)+(4*0)+(3*2)+(2*9)+(1*1)=68
68 % 10 = 8
So 40302-91-8 is a valid CAS Registry Number.