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Targeted therapy! The Capetin Prize winning "Click Chemistry" can be used like this!Targeted therapy! The Nobel Prize winning "Click Chemistry" can be used like this!2025-02-06
2087 Results for "
Probe L
" in MedChemExpress (MCE) Product Catalog:
Products (2087)
2087 Results for "Probe L" in MCE Product Catalog:
Cat. No.: HY-L903
5,281 compounds
Fragment-based drug discovery (FBDD) is well suited for discovering both drug leads and chemical probes of protein function. 3-dimensionality (3D) diversity is pivotal because the molecular shape is one of the most important factors in molecular recognition by a biomolecule. There is a developing appreciation that 3D fragments could offer opportunities that are not provided by 2D fragments.
MCE 3D Diverse Fragment Library consists of 5,400 non-flat fragment-like molecules (average Fsp3 value 0.58). More than 4,700 fragment compounds contain at least one chiral center in the structure. The key concepts that underlie the library design were 3D shape, structural diversity, reactive functionality and fragment-like. This 3D Diverse Fragment Library brings higher fragment hit optimization and increases the likelihood to find innovative hits in FBDD.
Cat. No.: HY-164899
CAS No.: 2765091-45-8
Synonyms: 2-aminopyridine-3-carboxylic acid imidazolide
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2A3 (2-aminopyridine-3-carboxylic acid imidazolide) is a covalent probe reagent for Selective 2'-Hydroxyl Acylation analyzed by Primer Extension (SHAPE) that targets the RNA ribose 2'-OH group. 2A3 efficiently permeates the biological membranes of Gram-negative bacteria, Gram-positive bacteria, and mammalian cells. 2A3 exhibits no base bias and specifically labels conformationally flexible, unpaired regions within RNA.
2A3 forms covalent adducts by acylating the 2'-OH groups of flexible RNA residues. When combined with SHAPE-MaP (mutational profiling) sequencing technology, these modification sites are converted into detectable mutational signals, thereby accurately reflecting local RNA backbone flexibility and base-pairing status. 2A3 is primarily utilized in molecular biology and transcriptomics research, including the resolution of RNA structuromes in living cells, the study of RNA folding regulatory mechanisms, and the investigation of non-coding RNA functions .
Cat. No.: HY-D1602
CAS No.: 217075-07-5
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BODIPY FL-DHPE is a fluorescent lipid probe composed of phosphatidylethanolamine (DHPE) labeled with a BODIPY FL fluorophore, which is used for fluorescent labeling of cell membranes, differentiation between liposome membrane fusion and endocytic pathways, and studies of membrane dynamics. The two C16 alkyl chains of BODIPY FL-DHPE insert into the lipid bilayer of membranes, and its fluorescence exhibits concentration dependence: it exists as monomers and emits green fluorescence at low mole fractions; it forms dimers with a red-shifted emission peak at high mole fractions; this spectral change is independent of enzymes, pH, and membrane potential. When liposomes enter the plasma membrane via membrane fusion, the dye is diluted, leading to attenuation of the dimer peak and enhancement of the monomer peak; when entry occurs via endocytosis, the dye remains in endosomes at high concentration with no change in the dimer peak, allowing differentiation between the two uptake pathways. Ex = 488 nm; monomer Em = 515 nm, dimer Em ≈ 620 nm .
Cat. No.: HY-D3003
CAS No.: 2522921-17-9
Cat. No.: HY-D3072
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P6-Aggrate is a fluorescent probe for aggregated proteome detection. P6-Aggrate specifically recognizes amorphous aggregated proteomes through non-covalent reversible binding, and its fluorescence enhances after heat-induced protein aggregation. P6-Aggrate reflects the polarity and compactness heterogeneity within aggregated proteomes via emission wavelength shift: short-wavelength emission (blue shift) corresponds to large aggregates with high compactness, while long-wavelength emission (red shift) corresponds to small spots with low compactness (Ex/Em = 488/520-580 nm). P6-Aggrate enables reversible monitoring of the dynamic processes of formation and clearance of stress-induced proteome aggregation such as that induced by MG132 (HY-13259) in living cells. P6-Aggrate can be used in studies related to protein homeostasis imbalance, neurodegenerative diseases and protein aggregation .
Cat. No.: HY-D3074
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TCM-4COOH is an AIE-active fluorescent probe for calcium ions. TCM-4COOH relies on aggregation-induced emission activity, and its carboxyl chelating group can bind to Ca 2+ and Mg 2+ to form insoluble aggregates, triggering fluorescence enhancement via restricting intramolecular motion (Ex/Em = 477/603 nm). TCM-4COOH shows pH independence in physiological environments (pH 4-9), can be strongly activated at Ca 2+ concentrations ranging from low nM to mM, and has a stronger binding ability to Ca 2+ than to Mg 2+. TCM-4COOH, as its acetoxymethyl ester derivative TCM-AM, can penetrate cell membranes for intracellular detection. TCM-4COOH can be used for imaging of cellular calcium overload, detection of bone microcracks, and studies related to calcium-rich biological environments .
Cat. No.: HY-D3088
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CQPP is a Fluorescent probe designed for monitoring polarity changes in the cellular microenvironment, including polarity tracking of lipid droplets/nuclei during ferroptosis. CQPP exhibits ratiometric fluorescence emission and fluorescence lifetime variations in response to polarity changes; a nonpolar environment stimulates fluorescence from the locally excited (LE) state, while a polar environment drives solvation relaxation to the intramolecular charge transfer (ICT) state, which attenuates the LE emission at ~470 nm and simultaneously enhances the ICT emission at ~670 nm. CQPP binds to intranuclear DNA through electrostatic interactions and hydrogen bonds in the DNA minor groove, which enhances its emission at ~670 nm and prolongs its fluorescence lifetime. CQPP can simultaneously target lipid droplets (green LE fluorescence) and the nucleus (red ICT fluorescence). The detection wavelengths of CQPP are Ex/Em = 405/470 nm and Ex/Em = 405/670 nm, and it also supports fluorescence lifetime imaging via 810 nm two-photon excitation .
Cat. No.: HY-D3401
CAS No.: 3121511-17-6
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LHA585 is a fluorescent probe targeting the lipid hydrogen abstraction process for the early detection of ferroptosis (Ferroptosis). Its detection mechanism relies on the reactivity of its own 4-phenyl-3-methylbut-2-enyl moiety with biologically relevant oxidative radicals, including peroxyl radicals (ROO·), alkoxyl radicals (RO·), hydroxyl radicals (HO·), and peroxynitrite anions (ONOO−); upon hydrogen abstraction from this structure, radical rearrangement and radical cleavage occur, releasing a xanthene radical which converts into a highly fluorescent rhodamine dye in biological environments, thereby achieving a fluorescence turn-on ratio of up to 360-fold. LHA585 is non-fluorescent in its native state, possesses excellent membrane permeability due to its non-polar property, and the rhodamine dye generated after oxidation diffuses into mitochondria. The excitation wavelength of LHA585 is 561 nm, and its emission wavelength ranges from 570 to 620 nm .
Cat. No.: HY-D3427
CAS No.: 3100316-45-5
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T-sCPY-s500R-H is a NADPH-based FRET ratiometric biosensor probe. T-sCPY-s500R-H forms a 1:1 FRET pair upon binding to the eDHFR-HaloTag fusion protein through conjugation of the donor s500R (green fluorescence) and the acceptor sCPY (red fluorescence) with the HaloTag ligand and the eDHFR ligand (TMP), respectively; NADPH binding to eDHFR induces a conformational change that converts sCPY from a colorless spirolactam form to a red fluorescent form, enabling quantification of NADPH levels through the ratio of red/green fluorescence intensity (Ex = 488 or 490 nm; green channel Em = 500-580 nm; red channel Em = 600-700 nm). T-sCPY-s500R-H is applicable to research in fields such as cell metabolism studies, oxidative stress and NADPH homeostasis analysis, tumor metabolism, and NADPH-modulating drug screening .
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Cat. No.: HY-160062
S2.2 aptamer sodium is a nucleic acid-based MUC1-binding aptamer with high affinity and low toxicity. Upon binding to its target, S2.2 aptamer sodium undergoes a conformational switch and restores fluorescence signal, serving as a targeted imaging agent for MUC1-positive cancer cells. S2.2 aptamer sodium enables targeted delivery to breast cancer cells with overexpressed MUC1. When formulated as the S2.2-PEG-MZF molecular probe, S2.2 aptamer sodium possesses the functions of T2 signal inhibition, magnetic field-induced hyperthermia and targeted magnetic resonance molecular imaging. In the S2.2-PEG-MZF/DOX nanoliposome, S2.2 aptamer sodium supports targeted thermochemotherapy, effectively inhibiting cancer cell proliferation and invasion as well as inducing apoptosis, and is widely used in studies related to breast cancer .
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p-Toluenesulfonamide (Standard) is the analytical standard of p-Toluenesulfonamide (HY-79602). This product is intended for research and analytical applications. p-Toluenesulfonamide is a small-molecule anticancer agent and plasticizer. p-Toluenesulfonamide exerts antitumor activity by inducing lysosomal membrane permeabilization, cathepsin B release and lysosome-mediated cell death. p-Toluenesulfonamide modulates cholesterol distribution in lipid rafts of tumor cell membranes and the Akt/mTOR/p70S6K pathway. p-Toluenesulfonamide shows activity against various cancers including hepatocellular carcinoma, non-small cell lung cancer and tongue squamous cell carcinoma; intrapleural injection effectively reduces malignant pleural effusion without causing pleural adhesion. p-Toluenesulfonamide is also the main degradation product of the disinfectant Chloramine-T (HY-B0959) in water. p-Toluenesulfonamide facilitates the localization of fluorescent probes to the endoplasmic reticulum. p-Toluenesulfonamide can be used in cancer-related research .
Cat. No.: HY-79602S1
CAS No.: 287476-18-0
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p-Toluenesulfonamide- 15N is the 15N-labeled p-Toluenesulfonamide (HY-79602). p-Toluenesulfonamide is a small-molecule anticancer agent and plasticizer. p-Toluenesulfonamide exerts antitumor activity by inducing lysosomal membrane permeabilization, cathepsin B release and lysosome-mediated cell death. p-Toluenesulfonamide modulates cholesterol distribution in lipid rafts of tumor cell membranes and the Akt/mTOR/p70S6K pathway. p-Toluenesulfonamide shows activity against various cancers including hepatocellular carcinoma, non-small cell lung cancer and tongue squamous cell carcinoma; intrapleural injection effectively reduces malignant pleural effusion without causing pleural adhesion. p-Toluenesulfonamide is also the main degradation product of the disinfectant Chloramine-T (HY-B0959) in water. p-Toluenesulfonamide facilitates the localization of fluorescent probes to the endoplasmic reticulum. p-Toluenesulfonamide can be used in cancer-related research .
Cat. No.: HY-W327027
CAS No.: 314742-00-2
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7-(2,4-Dinitrophenoxy)-4-methyl-2H-chromen-2-one (Compound 1) is a fluorescent probe for the detection of hydrogen sulfide (H2S). 7-(2,4-Dinitrophenoxy)-4-methyl-2H-chromen-2-one has a low detection limit (4×10 -6 mol/L), good selectivity and high sensitivity. 7-(2,4-Dinitrophenoxy)-4-methyl-2H-chromen-2-one shows almost no cytotoxicity at concentrations of 150 µg/mL. 7-(2,4-Dinitrophenoxy)-4-methyl-2H-chromen-2-one has the excitation peak of 331 nm, and the emission peak about 385 nm in DMSO solvent. Upon the addition of increasing amounts of HS -, the fluorescence intensity increases obviously at about 392 nm .
Cat. No.: HY-W783351
CAS No.: 1416808-87-1
Synonyms: Coppersensor 790 acetoxymethyl ester
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CS790AM (Coppersensor 790 acetoxymethyl ester) is a cell-permeable, Cu +-targeted near-infrared fluorescent probe (λabs=760 nm, λem=790 nm) applicable to live cells. CS790AM can cross lipophilic cell membranes, and is converted into negatively charged CS790 under the action of intracellular esterases to be retained, thus enabling highly sensitive, reversible "turn-on" detection of labile Cu + pools in live cells and mice. CS790AM possesses excellent biocompatibility and selectivity, avoids interference from other metal ions, shows no obvious toxicity, and can be rapidly cleared. CS790AM allows long-term longitudinal monitoring of individual mice, visualizes copper levels in internal organs and isolated livers, and effectively evaluates abnormal copper accumulation in Wilson's disease models (Atp7b -/-) as well as dynamic changes after chelator treatment. CS790AM can be used for research on Wilson's disease and related copper metabolic disorders .
Cat. No.: HY-188129
CAS No.: 2889348-10-9
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GLP-1R modulator-2 is a GLP-1R positive allosteric modulator with an EC50 of 106 nM. GLP-1R modulator-2 simultaneously binds to the extracellular pocket of GLP-1R and the peptide ligand GLP-1 (9-36) through a molecular glue-like allosteric effect, and selectively enhances GLP-1 (9-36)-induced G protein-dependent cAMP signaling. When used in combination with GLP-1 (9-36) under high-glucose conditions, GLP-1R modulator-2 enhances glucose-dependent insulin secretion in wild-type rat pancreatic islets. GLP-1R modulator-2 exhibits strong probe dependence and significantly potentiates the activity of GLP-1 (9-36). GLP-1R modulator-2 can be used for research on type 2 diabetes and obesity .
Cat. No.: HY-79602S
CAS No.: 1219795-34-2
Synonyms: p-Tosylamide-d4
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4-Tolyl-d4-sulfonamide (p-Tosylamide-d4) is the d4-labeled p-Toluenesulfonamide (HY-79602). p-Toluenesulfonamide is a small-molecule anticancer agent and plasticizer. p-Toluenesulfonamide exerts antitumor activity by inducing lysosomal membrane permeabilization, cathepsin B release and lysosome-mediated cell death. p-Toluenesulfonamide modulates cholesterol distribution in lipid rafts of tumor cell membranes and the Akt/mTOR/p70S6K pathway. p-Toluenesulfonamide shows activity against various cancers including hepatocellular carcinoma, non-small cell lung cancer and tongue squamous cell carcinoma; intrapleural injection effectively reduces malignant pleural effusion without causing pleural adhesion. p-Toluenesulfonamide is also the main degradation product of the disinfectant Chloramine-T (HY-B0959) in water. p-Toluenesulfonamide facilitates the localization of fluorescent probes to the endoplasmic reticulum. p-Toluenesulfonamide can be used in cancer-related research .
Cat. No.: HY-D3084
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C-TPA is a fluorescent probe used for hypochlorite detection and bioimaging of lipid droplet polarity in cancer cells. For hypochlorite detection, when its derivative C-TPA-S is exposed to hypochlorite, an oxidative desulfurization reaction converts the thiocarbonyl group of C-TPA-S to the carbonyl group of C-TPA, thus restoring bright fluorescence from the almost non-fluorescent C-TPA-S. For bioimaging of lipid droplet polarity, the intramolecular charge transfer process between its Triphenylamine (HY-W011998) donor group and Coumarin (HY-N0709) acceptor group endows C-TPA with solvatochromism-it exhibits stronger fluorescence in less polar environments (such as lipid droplets in cancer cells) and weaker fluorescence in more polar environments (such as lipid droplets in normal cells), enabling the differentiation of cancer cells and cancer tissues from normal cells and normal tissues. The excitation wavelength of C-TPA is 405 nm, and the emission wavelengths used for cell and tissue imaging cover 425-475 nm and 500-550 nm; in solvents, its emission peak shifts from 494 nm in non-polar toluene to 528 nm in polar water .
Cat. No.: HY-D3094
CAS No.: 2687198-42-9
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TPE-SQ5 is a ratiometric Fluorescent probe for hypochlorite (ClO -) detection with a limit of detection of 5.6 nM. TPE-SQ5 exhibits high selectivity and high sensitivity towards ClO -. TPE-SQ5 can be oxidized by ClO - to form an epoxide, which quenches its deep red fluorescence; subsequently, the epoxide decomposes into a hemicyanine and a sulfonic acid-substituted oxindole, producing blue-green fluorescence to achieve a ratiometric response. TPE-SQ5 can form nanoparticles with Pluronic F-127 via the nanoprecipitation method, and these nanoparticles possess cell permeability. TPE-SQ5 has unique Ex/Em spectra in different solvents and nanoparticle forms, with emission peaks at 643 nm (380 nm excitation, 95% H2O/THF), 631 nm (564 nm excitation, DMSO), 652 nm (536 nm excitation, THF) and 630 nm (524 nm excitation, nanoparticles); the Ex/Em settings used for cell imaging are 488/550-650 nm (red channel) and 405/450-550 nm (green channel) .
Cat. No.: HY-D3438
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Photoswitchable PM8 is a fluorescent probe used for super-resolution imaging of the plasma membrane. Photoswitchable PM8 functions through a light-induced Z/E isomerization mechanism: in the hydrophobic cell membrane environment, the Z isomer forms a planar intramolecular charge transfer state stabilized by an intramolecular hydrogen bond, which restricts conformational freedom, reduces nonradiative decay, and produces bright fluorescence; in contrast, the E isomer lacks this hydrogen bond, has increased conformational freedom, and exhibits a fluorescence-quenched state. The fluorescence of Photoswitchable PM8 can be switched "on/off" by visible light: activation with 405 nm light forms the fluorescent Z isomer, and switching with 561 nm light converts it to the nonfluorescent E isomer. In the membrane environment, Photoswitchable PM8 enables single-molecule localization for super-resolution imaging. Due to solvent-induced quenching and aggregation, Photoswitchable PM8 has negligible fluorescence in aqueous solution, but upon binding to the hydrophobic membrane environment it produces bright fluorescence, enabling high signal-to-noise ratio imaging without washing .
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Protocols
Targeted therapy! The Capetin Prize winning "Click Chemistry" can be used like this!Targeted therapy! The Nobel Prize winning "Click Chemistry" can be used like this!A suitable model is crucial in drug screening experiments. Organs can mimic the three-dimensional functional structure of internal organs, have similar spatial organization to corresponding organs, maintain some key characteristics, and reproduce some physiological functions. They are widely used for modeling and personalized drug screening physiological functions.2025-02-06
