641-17-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 641-17-8 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 6,4 and 1 respectively; the second part has 2 digits, 1 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 641-17:
(5*6)+(4*4)+(3*1)+(2*1)+(1*7)=58
58 % 10 = 8
So 641-17-8 is a valid CAS Registry Number.
InChI:InChI=1/C17H15NO3/c19-11-1-2-12-10(5-11)6-13-15-9(3-4-18-13)7-14-17(16(12)15)21-8-20-14/h1-2,5,7,13,18-19H,3-4,6,8H2/t13-/m1/s1