title: Antisense DNA oligonucleotides. I: The use of ionspray tandem mass spectrometry for the sequence verification of methylphosphonate oligodeoxyribonucleotides.
abstract: The sequences of synthetically prepared methylphosphonate oligodeoxyribonucleotides have been verified using ionspray tandem mass spectrometry with sample introduction via flow injection. The technique involves the use of product-ion scans from multiply protonated (4+ and 5+) precursors. Among the ions detected are several series of fragments of different charge states that indicate the base sequence of the intact molecule. Oligomers as large as 18 bases have been successfully characterized.
authors: Proctor & Gamble Company, Miami Valley Laboratories, Cincinnati, OH 45239-8707.
authors: T R
authors: TR
authors: Baker
authors: T
authors: T
authors: Keough
authors: R L
authors: RL
authors: Dobson
authors: T A
authors: TA
authors: Riley
authors: J A
authors: JA
authors: Hasselfield
authors: P E
authors: PE
authors: Hesselberth
mesh_terms: D001483:Base Sequence; D013058:Mass Spectrometry; D008969:Molecular Sequence Data; D016376:Oligonucleotides, Antisense / Q000737:chemistry*; D063065:Organophosphonates / Q000737:chemistry
chemical_list: D016376:Oligonucleotides, Antisense; D063065:Organophosphonates