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Exp 5 - Thin-Layer Chromatographic Analysis of Drug...

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Thin-Layer Chromatographic Analysis of Drug Components 10/20/08 Tyler Argent Exp. 5 CH 237 Lehman, John W. Operational Organic Chemistry, (Exp. 15 p.117 in text) I. Pre-Lab: (Attached) II. Experiment Notes and Observations: (Refer to Pre-Lab) III. Results: R f Values -Aspirin: (20mm/36mm)= 0.56 -Acetaminophen: (5mm/36mm)= 0.14 -Ibuprofen: (33mm/36mm)= 0.92 -Caffeine: (5mm/36mm)= 0.14 Unknowns: -Unknown#3: (33mm/36)= 0.92 -Unknown#4: (5mm/36mm)= 0.14 ; (20mm/36mm)= 0.56 -Unknown#4 showed up at two different spots on TLC plate -Told only to calculate 2 unknowns in exp. -According to R f Values: -Unknown #3 is Ibuprofen -Unknown#4 is a combination of Aspirin, Acetaminophen, and Caffeine -Was told by professor to not attach TLC plate(inside lab drawer) IV. Discussion: The problem is that a patient has swallowed a large number of OTC analgesic drugs, but the bottle was missing so the type of drug is unknown. However, there are some unused drugs at the patient’s house that can be analyzed. The plan was to determine the identity of the drug by using a TLC plate coated with silica gel. A spot of aspirin, acetaminophen,
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