A New Fluorescence Probe for the Quantification of Acetylcysteine and Carbocisteine in Bulk and Spiked Urine: Greenness Appraisal by Exploiting Different GAC-Metric Strategies.

Herein, a novel spectrofluorometric sensor is proposed for the sensitive analysis of two nonfluorescent mucolytic drugs, namely, acetylcysteine (ACT) and carbocisteine (CST), utilizing the newly synthesized 2-[(2-hydroxyethyl)-(2,8,10-trimethylpyrido[2',3':3,4]pyrazolo[1,5-a]pyrimidin-4-yl)-amino]-ethanol as a fluorescence probe (Flu. Probe). This fluorophore exhibits fluorescence emission at 445 nm upon excitation at 275 nm.

Synthesis, conformational analysis and antimicrobial activity of 10-benzyl-1,2,4-triazolo[4,3-]1,2,4-triazino[5,6-]indole acyclo -nucleoside analogs.

Condensation of 5-benzyl-3-hydrazino-1,2,4-triazino[5,6-]indole with various sugar aldoses or ketoses gave the corresponding sugar hydrazones as single geometrical isomer or exist in tautomeric isomers. The hydrazones underwent heterocyclization with Fe(Ш)Cl to give the -adduct acyclo -nucleosides: 3-(alditol-1yl)-10-benzyl-1,2,4-triazolo[4,3-]1,2,4-triazino[5,6-]indoles rather than the -adduct: 10-(alditol-1-yl)-3-benzyl-1,2,4-triazolo[3,4-]1,2,4-triazino[5,6-] indoles on the basis of chemical and UV spectral proofs. Conformational analysis of their polyacetates were studied.

A new fluorescence probe for sofosbuvir analysis in dosage form and spiked human plasma.

A simple, rapid, and low-cost technique was developed to allow reliable analysis of the anti-hepatitis C drug sofosbuvir in bulk, tablet form, and spiked human plasma. This method depends on the ability of sofosbuvir to quench the fluorescence of the newly synthesized 2-amino-3-cyano-4,6-dimethylpyridine (reagent 3). Elemental analysis and spectral data were used to validate the structure of the synthesized reagent.

In-lab synthesized turn-off fluorescence sensor for estimation of Gemigliptin and Rosuvastatin polypill appraised by Spider diagram, AGREE and whiteness metrics.

Gemigliptin-Rosuvastatin single-pill combination is a promising therapeutic tool in the effective control of hyperglycemia and hypercholesterolemia. Organic sensors with high quantum yields have profoundly significant applications in the pharmaceutical industry, such as routine quality control of marketed formulations. Herein, the fluorescence sensor, 2-Morpholino-4,6-dimethyl nicotinonitrile 3, (λex; 226 nm, λem; 406 nm), was synthesized with a fluorescence quantum yield of 56.

Selective Sensing of Darolutamide and Thalidomide in Pharmaceutical Preparations and in Spiked Biofluids.

Selective spectrofluorometric sensing is introduced for the analysis of non-steroidal anti-androgens, darolutamide, and thalidomide in pharmaceutical preparations and biofluids. An organic fluorophore, 2,4,8,10-tetramethylpyrido[2',3':3,4]pyrazolo[1,5-a]pyrimidine 2 was synthesized in our laboratories by new simple methods to act as a fluorescent reagent for the analysis of the studied drugs. Elemental and spectral analyses were performed to approve the fluorophore structure.

Selective sensing of the nucleoside analogue, trifluridine and tipiracil in dosage form and biological matrices.

A new fluorescent sensor is introduced to analyze nucleoside analogue, trifluridine and tipiracil in tablets and biological fluids. The synthesized fluorophore exhibits good fluorescence at 446 nm after excitation at 257 nm. The interaction between the studied drugs and the reagent was a quenching effect.

Fluorescent sensing for some nitric oxide donors in dosage forms and biological matrices.

New fluorescent sensing of some nitric oxide donors, nitroglycerin and isosorbide dinitrate was developed in our laboratories. Two fluorescent reagents, 2-(2-hydroxyethylamino)-4,6-dimethylpyridine-3-carbonitrile, 3a and 2-(3-chloro-phenylamino)-4,6-dimethylpyridine-3-carbonitrile, 3b were synthesized in our laboratories and a comparative study was performed between them from the point of fluorescence intensity. The fluorophore, 3a, was selected for the analytical study as it exhibit higher quantum yield value.

Design, Synthesis and Biological Evaluation of Cyanopyridines, Pyridopyrazolopyrimidines and Pyridopyrazolotriazines as Potential Anticancer Agents.

Background: The continuous need for new anticancer drugs is never-ending task due to cancer resistance to the existing drugs.

Objective: This article aimed to design, synthesis, characterization, and anticancer evaluation of cyanopyridines, pyridopyrazolopyrimidines and pyridopyrazolotriazines.

Methods: Anticancer activity of the synthesized compounds was determined using MTT assay against three cancer cell lines, namely liver cancer cell line (HepG-2), pancreatic cancer cell line (PANC-1), non-small lung cancer cell line (A-549) and normal fibroblast.

Synthesis of new pyrrolo[2,3-d]pyrimidine derivatives as antibacterial and antifungal agents.

A series of new pyrrole derivatives, pyrrolo[2,3-d]pyrimidine derivatives, pyrrolotriazolopyrimidines and pyrrolotetrazolopyrimidines were synthesized. The evaluation of their antimicrobial activities against Staphylococcus aureus, Escherichia coli, and Candida albicans were carried out. Pyrrolo[2,3-d]pyrimidines 3a-d, 7a,e, 11d exhibited excellent activity against C.