5987-91-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 5987-91-7 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 5,9,8 and 7 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 5987-91:
(6*5)+(5*9)+(4*8)+(3*7)+(2*9)+(1*1)=147
147 % 10 = 7
So 5987-91-7 is a valid CAS Registry Number.