Chem 243a - Infrared Spectroscopy and Analgesic Drug Identification

Chem 243a - Infrared Spectroscopy and Analgesic Drug Identification

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2A: Infrared Spectroscopy and Analgesic Drug Identification Antonio Alarcon Chem 243a 9/16/07 I. Abstract In this lab, the identity of acetaminophen was confirmed primarily by the use of IR spectrograph while the amount of the acetaminophen present was further identified by the means of % recovery. The lab concluded the presence of acetaminophen through the following: known acetaminophen IR spectrum, distinct peaks at 1650.53, 1555.79, and 1517.89, unknown (sample) acetaminophen IR spectrum, distinct peaks at 1658.33, 1555.27, and 1512.50, the % recovery proved to be 52.6% (526mg of acetaminophen).
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II. Introduction In this lab, we were to isolate the active ingredient from a common pain pill (given as an unknown) and identify the active ingredient by the use of infrared spectroscopy. This experiment demonstrated several techniques: extraction, filtration, evaporation, TLC analysis, and spectroscopic identification (Padias, 11). Of the techniques presented in this lab, extraction and filtration were of utmost importance. To properly extract the active ingredients, addition of methanol was necessary to separate the active ingredients within the selected crushed tablet. This process was repeated to ensure the removal of the entire active ingredient (supernatant liquid). Following extraction, filtration was performed to further isolate the active ingredient within the tested analgesic. Finally, evaporation was performed to remove
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Chem 243a - Infrared Spectroscopy and Analgesic Drug Identification

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