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It has been found that methanolyzed penicillin G has much higher ESI response than the penicillin G. Methanolyzed ampicillin also has higher ESI response than ampicillin; however, the effect is less pronounced than for penicillin. Methanolyzed carbenicillin does not have pronouncedly higher ESI response than carbenicillin.\n                  <\/jats:p>","DOI":"10.1177\/1469066718820434","type":"journal-article","created":{"date-parts":[[2018,12,24]],"date-time":"2018-12-24T09:58:11Z","timestamp":1545645491000},"page":"357-361","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":2,"title":["Comparison of the electrospray ionization (ESI) responses of penicillins with ESI responses of their methanolysis products"],"prefix":"10.1177","volume":"25","author":[{"given":"Lidia","family":"Podniesi\u0144ska","sequence":"first","affiliation":[{"name":"Faculty of Chemistry, Adam Mickiewicz University, Pozna\u0144, Poland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1080-9968","authenticated-orcid":false,"given":"Rafa\u0142","family":"Fra\u0144ski","sequence":"additional","affiliation":[{"name":"Faculty of 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