{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,7]],"date-time":"2026-09-07T11:11:20Z","timestamp":1788779480105,"version":"build-2803163510"},"reference-count":35,"publisher":"Wiley","issue":"20","license":[{"start":{"date-parts":[[2026,8,9]],"date-time":"2026-08-09T00:00:00Z","timestamp":1786233600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"},{"start":{"date-parts":[[2026,8,9]],"date-time":"2026-08-09T00:00:00Z","timestamp":1786233600000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"content-domain":{"domain":["analyticalsciencejournals.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Rapid Comm Mass Spectrometry"],"published-print":{"date-parts":[[2026,10,30]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:sec>\n                    <jats:title>Rationale<\/jats:title>\n                    <jats:p>Norvancomycin (NVCM) hydrochloride belongs to a group of glycopeptide antibiotics and exhibits strong effects against Gram\u2010positive cocci and bacilli. The safety of patients' lives is directly related to the quality of drugs. The impurities play often an important role in this process. This study aimed to investigate the impurity profile of NVCM hydrochloride.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>To identify the impurities, a simple and sensitive ultrahigh performance liquid chromatography quadrupole\u2013time\u2010of\u2010flight mass spectrometry (UHPLC\u2010QTOF\u2010MS) method was developed. An ACQUITY UPLC BEH C18 column (2.1\u2009\u00d7\u2009100\u2009mm, 1.7\u2009\u03bcm) was used. The flow rate was set at 0.2\u2009mL\/min. Mobile phase (A) consisted of 10\u2009mmol\/L ammonium formate (pH\u20099.0) and mobile phase (B) was methanol. Gradient elution was performed as follows: 0\u20135\u2009min, 15% B; 5\u201325\u2009min, 15% B to 20% B; 25\u201340\u2009min, 20% B to 70% B. Stress degradation experiments were conducted to check the specificity of the method.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>Thirteen impurities and two degradation products were characterized using UHPLC\u2010QTOF\u2010MS.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>Based on MS\/MS spectral data and exact mass measurements, the chemical structures of the impurities were elucidated. This study provided a reference method for the quality control of NVCM hydrochloride.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1002\/rcm.70157","type":"journal-article","created":{"date-parts":[[2026,8,10]],"date-time":"2026-08-10T01:15:10Z","timestamp":1786324510000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Identification of Impurities in Norvancomycin Hydrochloride Drug Substance Using UHPLC\u2010QTOF\u2010MS"],"prefix":"10.1002","volume":"40","author":[{"given":"Yanni","family":"Liu","sequence":"first","affiliation":[{"name":"Key Laboratory for Green Pharmaceutical Technologies and Related Equipment of Ministry of Education, College of Pharmaceutical Sciences Zhejiang University of Technology  Hangzhou Zhejiang China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jinqi","family":"Zheng","sequence":"additional","affiliation":[{"name":"Zhejiang Center for Drug and Cosmetics 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