Neuroscience Analysis dyes

Biotin-EDA hydrobromide is a nucleophilic biotinylation reagent used for the conjugation of various substrates and identification and quantification using biotin-conjugated fluorescent labels.

PTO-41 is a blood-brain barrier-permeable near-infrared fluorescent probe that targets β-amyloid oligomers (Aβ Oligomers, AβOs) with a K_d of 349 nM. PTO-41 exhibits low cytotoxicity, high sensitivity to β-amyloid oligomers in in vitro phantom imaging, and can be rapidly cleared from the brain. PTO-41 is applicable to the research of Alzheimer's disease (Ex/Em = 538 nM/680 nM).

NIR-PN1 is a blood-brain barrier-permeable near-infrared fluorescent indicator targeting peroxynitrite anion (ONOO⁻) (Ex/Em = 510 nm/670 nm). NIR-PN1 reacts with ONOO⁻ to trigger a strong near-infrared fluorescence enhancement, enabling the detection of ONOO⁻ flux. NIR-PN1 allows the imaging of ONOO⁻ flux in various Parkinson's disease models. NIR-PN1 is applicable to Parkinson's disease-related research.

MAO Probe 1 is a reactive two-photon fluorescent probe capable of crossing the blood-brain barrier, which is used to detect the activity of monoamine oxidases (MAO-A/MAO-B), with K_m values of 70 μM (MAO-A) and 75 μM (MAO-B), respectively. IBC 2 (benzo[g]imino-coumarin 2), the enzymatic product of MAO Probe 1, can further specifically bind to and image Aβ plaques, enabling in vivo two-photon co-monitoring of MAO activity and Aβ plaques. MAO Probe 1 can be used in Alzheimer's disease research (IBC 2: Ex/Em = 850 nm/570-620 nm).

MD-B is a •OH Fluorescent probe with blood-brain barrier permeability. MD-B undergoes single-electron oxidation by hydroxyl radicals (•OH), which triggers fluorescence enhancement and enables in-situ imaging of •OH. MD-B allows imaging analysis of hydroxyl radicals (•OH) in the mouse brain, revealing a positive correlation between elevated •OH levels and the severity of depressive phenotypes. MD-B can be used in depression-related research.

Zinc (II) probe-1 (Compound DNP) is a dual-color Fluorescent probe that can simultaneously monitor Zn²⁺ and H⁺. Upon interaction with Zn²⁺, Zinc (II) probe-1 produces bright blue fluorescence (excitation wavelength: 405 nm; blue channel wavelength: 420-500 nm). Upon interaction with H⁺, Zinc (II) probe-1 exhibits red fluorescence (excitation wavelength: 561 nm; red channel emission wavelength: 630-730 nm). Zinc (II) probe-1 can be used in studies related to depression.

HCP is a two-photon fluorescent probe capable of crossing the blood-brain barrier, which is specifically designed for real-time detection of hypochlorous acid (HClO/ClO^-) produced by myeloperoxidase (MPO). Chlorination of the quinoline skeleton of HCP generates HCP-Cl, which eliminates intramolecular charge transfer (ICT) quenching and thereby produces fluorescence. HCP is suitable for in vivo dynamic imaging of HClO in the brains of epileptic mice and high-throughput screening of antiepileptic drugs (HCP-Cl: Ex/Em = 800 nm/495 nm).

CDr20 is a fluorescent chemical probe capable of crossing the blood-brain barrier. CDr20 undergoes glucuronidation catalyzed by the UDP-glucuronosyltransferase Ugt1a7c, which triggers a fluorescence turn-on response. CDr20 enables visualization of live microglial cells. CDr20 can be used for research on Alzheimer's disease, stroke, and autism.

CDg13 is a fluorescent probe that specifically detects living neural stem/progenitor cells. CDg13 localizes to the endoplasmic reticulum via its dihexyl moiety, with no interaction with endoplasmic reticulum biomolecules. CDg13 undergoes selective efflux by active ABCG2 transporters, with increased intracellular accumulation following ABCG2 inhibition or knockdown. CDg13 isolates and enriches self-renewable neural stem/progenitor cells from embryonic mouse brain tissue, stains neural stem/progenitor cells brightly, and sorts ABCG2_low cell populations from heterogeneous populations. (Ex/Em = 520/553 nm)

AD-BChE/HClO is a dual-target two-photon fluorescent probe. AD-BChE/HClO produces strong fluorescence only in the simultaneous presence of BChE and HClO. AD-BChE/HClO enables two-photon imaging in nerve cells and mouse brain tissues via tail vein injection. AD-BChE/HClO can be used for the research of Alzheimer's disease (Ex/Em = 450 nm/500 nm).

Golgi-NO is a Golgi-targeted fluorescent probe for nitric oxide (NO) (Ex/Em: 560 nm/589 nm). Golgi-NO exhibits excellent selectivity for various potential interfering substances. Golgi-NO can be used to study the function of NO within the Golgi apparatus in disease models such as Alzheimer's disease (AD).

Golgi-P is a near-infrared Golgi-targeted fluorescent probe specifically used for the detection of Golgi polarity in living cells and living tissues. Golgi-P exhibits a significant polarity-dependent spectral behavior, with its emission wavelength shifting redward with polarity (Ex/Em: 700 nm/780-825 nm). Golgi-P achieves near-infrared fluorescence imaging directly in the brain tissue of depressed mice. Golgi-P combines polarity sensing with Golgi-targeting functionality, providing a new tool for the molecular diagnosis of depression.

CAQ is a near-infrared fluorescent probe based on a curcumin scaffold (Ex/Em = 565/635). CAQ exhibits high affinity for Aβ1-42 aggregates (K_d = 78.89 nM) and excellent selectivity toward common biomolecules. CAQ’s emission wavelength shows significant solvent dependence. CAQ, by incorporating intramolecular rotation donors and quinoline functional groups, can be used for the specific detection and imaging of Aβ aggregates in Alzheimer's disease.

R-MA-SLM is an Aβ-targeted and blood-brain barrier-permeable ratiometric H₂O₂-responsive fluorescent probe. When excited at 490 nm, the fluorescence intensity of the R-MA-SLM gradually decreases at 574 nm, while the emission intensity gradually increases at 661 nm. R-MA-SLM can detect and exhibits a ratiometric response to Aβ-induced endogenous H₂O₂. R-MA-SLM can be used in the research of Alzheimer's disease.