Methyl butyryl

An optically active polymer was obtained by Minoura and Sakota (74) from poly-vinyl-alcohol and a-(N-para-toluen-sulfonyl-ammino)-/8-methyl-butyryl-chloride. 

Eugenol, (2-methyl-butyryl ester), - + Reichling etal., 1985... 

Matern D, He M, Berry SA, Rinaldo P, Whitley CB, Madsen PP, et al. Prospective diagnosis of 2-methyl-butyryl-CoA dehydrogenase deficiency in the Hmong population by newborn screening using tandem mass spectrometry. Pediatrics 2003 112 74-8. 

Considering the knowledge of the elemental composition of the molecular ion M as well as the other data presented here, the authors [213a,b] were able to propose the following structure for this type of peptide [cyclo(L-AT-methyl-alanyl-L-valyl-D-3-oxo-3-phenyl-propionyl-L-2-oxo-3-methyl-butyryl)] (Fig. 62). 

Riedl, Ann. 663, 83 (1963). Exists in several tautomeric forms and is a mixt of isobutyry], isovaleryl, and 2-methyl -butyryl side chain homologues. Structural elucidation Lounasmaa et al, Acta Chem. Scand. 28B, 1200 (1974). 

The normal acylcarnitine pattern in plasma consists of mostly acetylcarnitine (C2), with increasingly lower amounts of C3 (propionyl), C4 (a mixture of butyryl and isobutyryl), C5 (a mixture of isovaleryl and 2-methyl-butyryl), OH-C4 (mostly hydroxybutyryl), OH-C5 (3-hydroxyisovaleryl) and typically minor amounts of others, up to C16 and Cl8 1. The concentration of acetylcarnitine in both plasma and whole blood is variable. During fasting, increased intra-mitochondrial production of acetyl-CoA and 3-hydroxybutyrate elevates the C2 and OH-C4 signals, sometimes markedly. Other conditions that can produce spurious changes in metabolite levels are discussed in E.2 and summarized in Table E.7... 

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