title: Liquid chromatography ion trap/time-of-flight mass spectrometric study on the fragmentation of an acetildenafil analogue.
abstract: Liquid chromatography ion-trap time-of-flight mass spectrometry was employed to elucidate the fragmentation pathways of an analogue of acetildenafil. Based on the accurate masses of the parent ion, product ions and neutral losses of acetildenafil analogue, its fragmentation pathways were proposed. The information is useful for the on-line structural identification of unknown analogues of acetildenafil found as adulterants in herbal products.
authors: Peng
authors: P
authors: Zou
authors: Sharon Sze-Yin
authors: SS
authors: Oh
authors: Kin-Har
authors: KH
authors: Kiang
authors: Min-Yong
authors: MY
authors: Low
authors: Hwee-Ling
authors: HL
authors: Koh
mesh_terms: D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D004365:Drugs, Chinese Herbal / Q000737:chemistry*; D010879:Piperazines / Q000032:analysis*; D011687:Purines / Q000032:analysis; D000068677:Sildenafil Citrate; D021241:Spectrometry, Mass, Electrospray Ionization / Q000379:methods*; D019032:Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization / Q000379:methods*; D013450:Sulfones / Q000032:analysis*
chemical_list: D004365:Drugs, Chinese Herbal; D010879:Piperazines; D011687:Purines; D013450:Sulfones; D000068677:Sildenafil Citrate