1.
Zhonghua Bing Li Xue Za Zhi
; 49(10): 1052-1054, 2020 Oct 08.
Artigo
em Chinês
| MEDLINE
| ID: mdl-32992422
2.
Food Addit Contam Part A Chem Anal Control Expo Risk Assess
; 26(2): 145-51, 2009 Feb.
Artigo
em Inglês
| MEDLINE
| ID: mdl-19680883
RESUMO
An unknown compound is detected and isolated from two herbal dietary supplements bought on the internet. The structure of the unknown compound is elucidated using ESI-MS/MS, NMR, UV and IR. The compound, named hydroxythiohomosildenafil, is identified as an analogue of sildenafil in which the oxygen atom is substituted with a sulfur atom in the pyrazolopyrimidine moiety, and a hydroxyethyl group instead of a methyl group is attached to the piperazinyl nitrogen. It is the first report of this compound being detected in herbal dietary supplements. The UV, IR and completely assigned NMR data of hydroxythiohomosildenafil is recorded.