ratio

Msr-Ratio (Msr-green) (Msr-green) is a ratiometric fluorescent probe specifically designed for the detection of methionine sulfoxide reductase (MSR) activity. It has an excitation wavelength of 375 nm and an emission wavelength of 550 nm. This probe offers the ability to monitor the enzyme activity both in vitro and in live cells, making it a valuable tool for studying MSR function.

Diphenylterazine (DTZ) is a bioluminescent agent. It produces very little background of its own, giving it an excellent signal-to-noise ratio.

The cell-permeant pH indicator, carboxy SNARF-1, acetoxymethyl ester, acetate (CAS #126208-13-7) has a pKa of ~7.5 after de-esterification, thus is useful for measuring pH changes between pH 7 and pH 8. Carboxy-SNARF-1 exhibits a significant pH-dependent

1) Non-toxicity: belong to flower-stem dye, easy to biodegrade, no carcinogenic toxicity. 2) High sensitivity: at least 100pg ssDNA or RNA can be detected, which is 25 ~ 100 times higher than EB staining. 3) High SIGNal-to-noise ratio: the sample fluorescence signal is strong, while the background signal is low. 4) Simple operation: like EB, the dye does not degrade in the prefabricated gel and electrophoresis process;The dyeing process after electrophoresis takes only 30 minutes without decoloring or washing, and can be observed directly with ultraviolet gel transmission or visible light transmission.

SBFI AM is a membrane-permeant, fluorescent Na+ indicator dye. It is selective for Na+ over K+ with Kd values of 20 and 120 mM for these ions, respectively. [1]Increasing concentration of Na+ increases the ratio of excitation efficiency at 330-345 nm to that at 370-390 nm with emission collected at 450-550 nm. [1] Therefore, ratio fluorometry and imaging can be performed with the same wavelengths. SBF AM is suitable for single intracellular dye injection and is typically used for high-resolution measurements of Na+ concentration in intact tissue through two-photon confocal imaging.[2]

BCECF is a fluorescent probe commonly used to measure pH. It is a dual-excitation ratiometric pH indicator with a pKa of ~6.98. Measurements of pH are made by determining the ratio of emission intensity, detected at 535 nm when excited at 490 nm versus th

3-MeOARh-NTR chloride is a highly selective and stable activatable imaging probe specifically designed for the efficient detection of nitroreductase (NTR), exhibiting a high signal-to-noise ratio [1].

ZnAF-2, 6-iso- is a cell-impermeable, high-affinity Zn2-specific fluorescent probe (Kd = 2.7 nM) that remains relatively non-fluorescent until it binds to Zn2 in a stoichiometric (1:1) ratio, resulting in an approximately 51-fold increase in fluorescence intensity. It shows minimal affinity for Ca2, Mg2, Na, or K.

3-MeOARh-NTR is an activatable imaging probe characterized by high selectivity and stability, offering a high signal-to-noise ratio specifically for nitroreductase (NTR) detection. It serves as an efficient molecular tool for identifying endogenous NTR [1].

ODIPY Green 8-P2M is an innovative thiol-reactive fluorescence probe derived from the BODIPY fluorophore. Its fluorescence is significantly quenched by d-PeT and can be reactivated upon reacting with thiol, leading to an exceptionally high signal-to-noise ratio. This makes ODIPY Green 8-P2M valuable for detecting very low concentrations of protein in gels following SDS-PAGE [1].

1) Non-toxicity: The unique oiliness and high molecular weight characteristics of CelRed prevent it from penetrating cell membranes into cells, and Ames test results also show that the mutagenicity of CelRed dye is much less than EB. 2) High sensitivity: