Stripping Voltammetric Determination of Analgesics in Their Pharmaceuticals Using Nano-Riboflavin-Modified Glassy Carbon Electrode

Table 1

Structure and physical parameters of drugs.

Name	Structure	Physical properties
CAS No: 103-90-2 Acetaminophen (AAP) (4-Hydroxyacetanilide)		Colourless crystalline powder Melting point: 169–170°C Solubility in water, 1.4 g/100 mL at 20°C, Mol. Mass:151.17 g/moL
CAS No: 50-78.2 Acetylsalicylic acid (ASA)(2-(acetyloxy)-Benzoic acid;)		Colourless crystalline powder Melting point: 136°C with decomposition Solubility in water, 1 g/100 g water at 37°C, Mol. Mass: 180.160 g/mol
CAS No: 68-89-3 Dipyrone (DP) (1-Phenyl-2,3-Dimethyl-5-Pyrazolone-4-Methylaminomethanesulfonate Sodium)		White crystalline powder Melting point: 172°C Solubility in water: 660,00 g/L with 20°C, Mol. Mass:311.358 g/moL