## Abstract With rare exception, ganglioneuroma (GN) is a benign lesion which presents as a localized mass without metastatic potential and which is chemotherapy resistant. Thus, its distinction from neuroblastoma (NB) may be important. The diagnosis of GN implies the absence of neuroblastic elemen
Deuteration of catecholamines, catecholamine metabolites and tryptophan metabolites
✍ Scribed by Frits A. J. Muskiet; Hans J. Jeuring; Cornelis G. Thomasson; Jan Van Der Meulen; Bert G. Wolthers
- Publisher
- John Wiley and Sons
- Year
- 1978
- Tongue
- French
- Weight
- 282 KB
- Volume
- 14
- Category
- Article
- ISSN
- 0022-2135
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✦ Synopsis
Abstract
The preparation of some deuterium labelled catecholamines, catecholamine metabolites and tryptophan metabolites is described. Simple exchange reactions in DC1/D~2~0 solution or reductions with Li Al D~4~ were used. The deuterium labelled compounds prepared are suitable for use as internal standards for quantitative mass‐fragmentographic analysis of their unlabelled analogs in biological material. Mass spectra of trimethylsilyl and trimethylsilyl‐N‐trifluoroacetyl derivatives of 2,5,6‐trideutero vanillactic acid, 1,1‐dideutero‐1‐hydroxy‐2 (2,5,6‐trideutero catechol)‐ethane, 2,5,6‐trideutero epinephrine, 2,5,6‐trideutero normetanephrine and hexadeutero indole‐3‐acetic acid are given together with those of their natural occurring analogs.
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