RETRACTED: Ullah et al. Fluorescent and Phosphorescent Nitrogen-Containing Heterocycles and Crown Ethers: Biological and Pharmaceutical Applications. Molecules 2022, 27, 6631.

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Title: RETRACTED: Ullah et al. Fluorescent and Phosphorescent Nitrogen-Containing Heterocycles and Crown Ethers: Biological and Pharmaceutical Applications. Molecules 2022, 27, 6631.
Authors: Ullah F; Department of Chemistry, Quaid I Azam University, Islamabad 45320, Pakistan., Ullah S; Department of Zoology, Government College University, Faisalabad 38000, Pakistan., Khan MFA; Faculty of Pharmacy, Capital University of Science and Technology, Islamabad Expressway, Islamabad 44000, Pakistan., Mustaqeem M; Institute of Chemistry, University of Sargodha, Sargodha 40100, Pakistan., Paracha RN; Department of Chemistry, Sub Campus, University of Sargodha, Bhakkar 30000, Pakistan., Rehman MFU; Institute of Chemistry, University of Sargodha, Sargodha 40100, Pakistan., Kanwal F; School of Biomedical Engineering, Shanghai Jiao Tong University, 1954 Hua Shan Road, Shanghai 200030, China., Hassan SSU; Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of Pharmacy, Shanghai Jiao Tong University, Shanghai 200240, China.; Department of Natural Product Chemistry, School of Pharmacy, Shanghai Jiao Tong University, Shanghai 200240, China., Bungau S; Department of Pharmacy, Faculty of Medicine and Pharmacy, University of Oradea, 410028 Oradea, Romania.
Source: Molecules (Basel, Switzerland) [Molecules] 2026 Feb 25; Vol. 31 (5). Date of Electronic Publication: 2026 Feb 25.
Publication Type: Journal Article; Retraction Notice
Journal Info: Publisher: MDPI Country of Publication: Switzerland NLM ID: 100964009 Publication Model: Electronic Cited Medium: Internet ISSN: 1420-3049 (Electronic) Linking ISSN: 14203049 NLM ISO Abbreviation: Molecules Subsets: MEDLINE; In Process
Database: MEDLINE Ultimate
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  Data: RETRACTED: Ullah et al. Fluorescent and Phosphorescent Nitrogen-Containing Heterocycles and Crown Ethers: Biological and Pharmaceutical Applications. Molecules 2022, 27, 6631.
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  Data: <searchLink fieldCode="AU" term="%22Ullah+F%22">Ullah F</searchLink>; Department of Chemistry, Quaid I Azam University, Islamabad 45320, Pakistan.<br /><searchLink fieldCode="AU" term="%22Ullah+S%22">Ullah S</searchLink>; Department of Zoology, Government College University, Faisalabad 38000, Pakistan.<br /><searchLink fieldCode="AU" term="%22Khan+MFA%22">Khan MFA</searchLink>; Faculty of Pharmacy, Capital University of Science and Technology, Islamabad Expressway, Islamabad 44000, Pakistan.<br /><searchLink fieldCode="AU" term="%22Mustaqeem+M%22">Mustaqeem M</searchLink>; Institute of Chemistry, University of Sargodha, Sargodha 40100, Pakistan.<br /><searchLink fieldCode="AU" term="%22Paracha+RN%22">Paracha RN</searchLink>; Department of Chemistry, Sub Campus, University of Sargodha, Bhakkar 30000, Pakistan.<br /><searchLink fieldCode="AU" term="%22Rehman+MFU%22">Rehman MFU</searchLink>; Institute of Chemistry, University of Sargodha, Sargodha 40100, Pakistan.<br /><searchLink fieldCode="AU" term="%22Kanwal+F%22">Kanwal F</searchLink>; School of Biomedical Engineering, Shanghai Jiao Tong University, 1954 Hua Shan Road, Shanghai 200030, China.<br /><searchLink fieldCode="AU" term="%22Hassan+SSU%22">Hassan SSU</searchLink>; Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of Pharmacy, Shanghai Jiao Tong University, Shanghai 200240, China.; Department of Natural Product Chemistry, School of Pharmacy, Shanghai Jiao Tong University, Shanghai 200240, China.<br /><searchLink fieldCode="AU" term="%22Bungau+S%22">Bungau S</searchLink>; Department of Pharmacy, Faculty of Medicine and Pharmacy, University of Oradea, 410028 Oradea, Romania.
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  Data: <searchLink fieldCode="JN" term="%22100964009%22">Molecules (Basel, Switzerland)</searchLink> [Molecules] 2026 Feb 25; Vol. 31 (5). <i>Date of Electronic Publication: </i>2026 Feb 25.
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  Data: Journal Article; Retraction Notice
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  Data: <i>Publisher: </i><searchLink fieldCode="PB" term="%22MDPI%22">MDPI </searchLink><i>Country of Publication: </i>Switzerland <i>NLM ID: </i>100964009 <i>Publication Model: </i>Electronic <i>Cited Medium: </i>Internet <i>ISSN: </i>1420-3049 (Electronic) <i>Linking ISSN: </i><searchLink fieldCode="IS" term="%2214203049%22">14203049 </searchLink><i>NLM ISO Abbreviation: </i>Molecules <i>Subsets: </i>MEDLINE; In Process
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        Value: 10.3390/molecules31050775
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      – TitleFull: RETRACTED: Ullah et al. Fluorescent and Phosphorescent Nitrogen-Containing Heterocycles and Crown Ethers: Biological and Pharmaceutical Applications. Molecules 2022, 27, 6631.
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              Text: 2026 Feb 25
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