title: Sensitive determination of 1,1'-ethylidenebis(L-tryptophan) in L-tryptophan by gradient HPLC with fluorimetric detection.
authors: Medicines Testing Laboratory, Royal Pharmaceutical Society of Great Britain, Edinburgh, UK.
authors: B I
authors: BI
authors: Knight
authors: A G
authors: AG
authors: Davidson
mesh_terms: D002851:Chromatography, High Pressure Liquid; D004340:Drug Contamination; D012015:Reference Standards; D012680:Sensitivity and Specificity; D013050:Spectrometry, Fluorescence; D013053:Spectrophotometry; D014364:Tryptophan / Q000031:analogs & derivatives* / Q000032:analysis / Q000737:chemistry*
chemical_list: C070372:1,1'-ethylidene bis(tryptophan); D014364:Tryptophan