138783-97-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 138783-97-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,8,7,8 and 3 respectively; the second part has 2 digits, 9 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 138783-97:
(8*1)+(7*3)+(6*8)+(5*7)+(4*8)+(3*3)+(2*9)+(1*7)=178
178 % 10 = 8
So 138783-97-8 is a valid CAS Registry Number.