381238-91-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 381238-91-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,8,1,2,3 and 8 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 381238-91:
(8*3)+(7*8)+(6*1)+(5*2)+(4*3)+(3*8)+(2*9)+(1*1)=151
151 % 10 = 1
So 381238-91-1 is a valid CAS Registry Number.