of the butyl ester
of octanoylcarnitine (m/z 344) and its internal calibrator [[sup.
Changes in brain serotanin and 5-hydroxyindalacetic acid levels induced by 2,4-dichlorophenoxyacetic butyl ester
The mean (SD) retention times of the butyl ester
derivatives of L-arginine, ADMA, and SDMA, respectively, were 1.
Formamidene butyl esters
of amino acids afford more stable ions than the corresponding butyl esters
during electrospray ionization-MS/MS analysis (6).
1) b-Phellandrene (2) Toluene (3) Iso-orientin (4) Nonane (5) 6-C-p-ydroxybenzoylvitexin (6) Ethylbenzene (7) Citrullol (8) 2-Propenoic acid, butyl ester
(9) latericin B (10) Undecane (11) a-sphinosterol (12) Dodecane (13) Octadecane (14) Tridecane (15) Heptadecane (16) Hentriactone (17) Tetradecane (18) 9,12-Octadecadi enoicacid[7,7] (19) Elaterin (20) n-Hexadecanoic acid
The safety assessment of ethyl ester of PV/PMA copolymer and butyl ester
of PV/PMA copolymer could be expanded to include seven additional ingredients; the safety assessment of sesame oil could be expanded to include three additional ingredients and the safety assessment of sodium dodecylbenzenesulfonate, TEA-dodecylbenzenesulfonate, and sodium decylbenzenesulfonate could be expanded to include nine additional ingredients.
We report the validation of a high-throughput method for the analysis of acylcarnitine butyl esters
in infants with these disorders and include the results from a prospective study of the occurrence of PA and MMA in nearly 1 million newborns screened using MS/MS.
Propyl and butyl esters
were obtained only under acid catalysis.
Typically, MS/MS analysis of carnitine has utilized an acid-catalyzed reaction with butanol to form butyl esters
Relevant AC butyl esters
were extracted and derivatized from 1/3 inch dried blood samples and were analyzed using a protocol described by Schulze et al.