138302-56-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 138302-56-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,8,3,0 and 2 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 138302-56:
(8*1)+(7*3)+(6*8)+(5*3)+(4*0)+(3*2)+(2*5)+(1*6)=114
114 % 10 = 4
So 138302-56-4 is a valid CAS Registry Number.