6238-40-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 6238-40-0 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 6,2,3 and 8 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 6238-40:
(6*6)+(5*2)+(4*3)+(3*8)+(2*4)+(1*0)=90
90 % 10 = 0
So 6238-40-0 is a valid CAS Registry Number.