Applications

Pharmaceutical Formulations

Orthoethoxybenzamide, d-propoxyphene HCI, NAPAP

	Operating Conditions Sample Dissolved in: methylene chloride/acetic acid Adsorbent Used: DAI Silica 32-63 Stationary Phase: 10% water Eluent: methylene chloride: ethanol: water = 770:200:29:1 Sample Volume: 1 ml Flow rate: 12 ml/min Operating Pressure: 42 psi Column Size: 9mm x 300 mm Temperature: 20ºC Detection: UV detector 251 nm
	Substances Separated Sample (mg) Retention Volume (ml) 1. o-ethoxybenzamide 0.5 12 2. NAPAP (n-acetyl para-aminophenol) 0.5 78 3. dextropropoxyphene-HCI 20 186

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