Pyridine series

2-Diazo-1-naphthol-5-sulfonic

Minocycline or its HCl salt M6

diphenylphosphine oxide

Iodoacetamide

3-Piperidine ethanol &

5-Amino-2-methyl-1H-tetrazole

26-difluoronitrobenzene 1-

4-Piperidone OR ITS HCL SALT

4-chlorobutanoic acid

2-Hydroxy Pyridine -

Diflucortolone valerate ;2;

5-Amino-2-methoxypyridine-4-ca