𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Mass fragmentographic determination of methadyl acetate in urine using stable isotope labeled analog as internal standard

✍ Scribed by Satya P. Jindal; Per Vestergaard; Theresa Lutz

Publisher
John Wiley and Sons
Year
1978
Tongue
English
Weight
350 KB
Volume
67
Category
Article
ISSN
0022-3549

No coin nor oath required. For personal study only.

📜 SIMILAR VOLUMES

Quantitation of cocaine and its principa
Quantitation of cocaine and its principal metabolite, benzoylecgonine, by GLC-mass spectrometry using stable isotope labeled analogs as internal standards
✍ Satya P. Jindal; Per Vestergaard 📂 Article 📅 1978 🏛 John Wiley and Sons 🌐 English ⚖ 434 KB 👁 1 views

A quantitative GLC-mass spectrometric assay was developed for the determination of cocaine and its principal metabolite, benzoylecgonine, in human urine. The assay utilizes selective ion focusing to monitor in a GLC effluent the molecular ions of cocaine and benzoylecgonine generated by electron-imp

Preparation of deuterium labelled catech
Preparation of deuterium labelled catecholamines, catecholamine precursors and metabolites for use as internal standards in mass fragmentographic determination and for turnover studies
✍ B. Lindström; B. Sjöquist; E. Anggard 📂 Article 📅 1974 🏛 John Wiley and Sons 🌐 French ⚖ 255 KB 👁 1 views

## L-dihydroxyphenytalanine-H3 L-tyrwsine-2HZ dopamine-H 3methoxytyramine-H3 ' H 5 and vanillylmzndetic acid H2 were prepared by hydrogen-deuterium exchange under acidic o r basic conditions. 4-hydroxy-3methoxy phenylethyleneglycol-H3 was prepared f m m vanillylman-2 2 d e t i c acid-H by reductio

Synthesis of CD3-labelled 3-methoxytyram
Synthesis of CD3-labelled 3-methoxytyramine, normetanephrine and metanephrine for use as internal standards in mass fragmentographic analyses
✍ Frits A. J. Muskiet; Stanislav Pavel; Gerrie J. Stob; Henk Elzinga 📂 Article 📅 1983 🏛 John Wiley and Sons 🌐 French ⚖ 328 KB

## Abstract The preparation of CD~3~‐labelled 3‐methoxytyramine, normetanephrine and metanephrine from their parent catecholamines is described. The syntheses include N‐maleylation, O‐methylation by dimethylsulfate‐D~6~, removal of the protecting group by acid hydrolysis and partial purification of