PubMed · 8312125
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M Markman. 1993. Supportive care.. https://pubmed.ncbi.nlm.nih.gov/8312125/
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A sensitive and selective method for the determination of domperidone in human breast milk and serum has been developed. The same method may be successfully applied to both matrices to a lower limit of quantitation of 0.5 ng/ml. Samples are processed by a liquid-liquid extraction, and analyzed by LC-ESI-MS in positive ion mode. There was no interference, on the domperidone quantitation, from over 30 drugs. Samples from patients, at various times post-dose, were analyzed and a large number showed significant levels of domperidone in the breast milk as well as in the serum.
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We used differential scanning calorimetry, infrared spectrophotometry and 1H nuclear magnetic resonance imaging to search for polymorphs of ondansetron. Samples were tested under different conditions of temperature, pulverization and pH, and in different solvents. The factors identified as able to cause the formation of polymorphs were heating to different temperatures for different times, and the use of ethanol and methanol as solvents.