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Table 5 Abbreviations, colours and melting points of isolated adducts using 2, 4-DN1N as charge transfer reagent

From: Potentials of N-(2, 4-dinitro-1-naphthyl)-p-toluenesulphonamide and 2, 4-dinitro-1-naphthol as novel charge transfer acceptors in pharmaceutical analysis of some quinolones and cephalosporins

S. no

Abbreviation of adducts

Melting point °C

Colour of adducts

1

SPA-2,4-DN1N

208–211

Light orange

2

NOR-2,4-DN1N

224–226

Golden yellow

3

OFL-2,4-DN1N

218–220

Golden yellow

4

CFR-2,4-DN1N

220–224

Orange

5

CFT-2,4-DN1N

183–185

Bright orange

6

CFU-2,4-DN1N

192–194

Orange