137897-85-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 137897-85-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,7,8,9 and 7 respectively; the second part has 2 digits, 8 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 137897-85:
(8*1)+(7*3)+(6*7)+(5*8)+(4*9)+(3*7)+(2*8)+(1*5)=189
189 % 10 = 9
So 137897-85-9 is a valid CAS Registry Number.