Calcium Indicators & Chelators
Biotium offers a wide range of calcium indicator dyes, including Fluo-4 AM Ester, a bright and cell permeable dye that is used for high-throughput screening.
The calcium indicator dyes vary in their calcium dissociation constant (Kd), color and brightness. The AM ester versions are cell permeable, and hydrolyzed by intracellular esterases to release the fluorescent dye. See our complete selection of Calcium & Other Ion Indicators, or download the Ion Indicator Brochure to learn more.
DMNP-EDTA (Caged Calcium), AM Ester
50051-5mg, - 50051-1mgView allHide
The membrane-permeant form of DMNP-EDTA (also known as DM-Nitrophen™), a photolyzable calcium chelator that can be used to release a pulse of calcium when exposed to light.
4-Bromo A-23187, Free Acid
Similar to A-23187, 4-Bromo A-23187 is used for in situ calibrations of fluorescent Ca2+ indicators to equilibrate intracellular and extracellular calcium concentrations and to allow Mn2+ to enter cells to quench indicator fluorescence.
5,5′-Dibromo BAPTA, Tetrapotassium Salt
BAPTA and its derivatives are calcium chelators that are commonly used to form calcium buffers with well-defined calcium concentrations. By injecting the chelators into cells or by incubating cells with the AM ester form of the chelators, one can control the cytosolic calcium concentration, an important means to study the roles of calcium.
5,5′-Difluoro BAPTA, AM Ester
BAPTA and its derivatives are calcium chelators that are commonly used to form calcium buffers with well-defined calcium concentrations. By injecting the chelators into cells or by incubating cells with the AM ester form of the chelators, one can control the cytosolic calcium concentration, an important means to study the roles of calcium.
5,5′-Difluoro BAPTA, Tetrapotassium Salt
BAPTA and its derivatives are calcium chelators that are commonly used to form calcium buffers with well-defined calcium concentrations. By injecting the chelators into cells or by incubating cells with the AM ester form of the chelators, one can control the cytosolic calcium concentration, an important means to study the roles of calcium.
5,5′-Dimethyl BAPTA, AM Ester
BAPTA and its derivatives are calcium chelators that are commonly used to form calcium buffers with well-defined calcium concentrations. By injecting the chelators into cells or by incubating cells with the AM ester form of the chelators, one can control the cytosolic calcium concentration, an important means to study the roles of calcium.
5,5′-Dimethyl BAPTA, Tetrapotassium Salt
BAPTA and its derivatives are calcium chelators that are commonly used to form calcium buffers with well-defined calcium concentrations. By injecting the chelators into cells or by incubating cells with the AM ester form of the chelators, one can control the cytosolic calcium concentration, an important means to study the roles of calcium.
A-23187 Free Acid
A-23187, also known as Calcimycin or Calcium Ionophore III, is a calcium ionophore that rapidly equilibrates intracellular and extracellular calcium concentrations. It is commonly used for in situ calibrations of fluorescent calcium indicators.
BAPTA, AM Ester
50000, - 50000-1View allHide
BAPTA and its derivatives are calcium chelators that are commonly used to form calcium buffers with well-defined calcium concentrations. By injecting the chelators into cells or by incubating cells with the AM ester form of the chelators, one can control the cytosolic calcium concentration, an important means to study the roles of calcium.
BAPTA, Tetracesium Salt
BAPTA and its derivatives are calcium chelators that are commonly used to form calcium buffers with well-defined calcium concentrations. By injecting the chelators into cells or by incubating cells with the AM ester form of the chelators, one can control the cytosolic calcium concentration, an important means to study the roles of calcium.
BAPTA, Tetrapotassium Salt
BAPTA and its derivatives are calcium chelators that are commonly used to form calcium buffers with well-defined calcium concentrations. By injecting the chelators into cells or by incubating cells with the AM ester form of the chelators, one can control the cytosolic calcium concentration, an important means to study the roles of calcium.
BAPTA, Tetrasodium Salt
BAPTA and its derivatives are calcium chelators that are commonly used to form calcium buffers with well-defined calcium concentrations. By injecting the chelators into cells or by incubating cells with the AM ester form of the chelators, one can control the cytosolic calcium concentration, an important means to study the roles of calcium.
Calcium Calibration Buffer Kit
This kit provides buffers for generating a range of accurate calcium concentrations for the calibration of fluorescent Ca2+ indicators.
DMNP-EDTA, Tetrapotassium Salt (Caged Calcium)
DMNP-EDTA (also known as DM-Nitrophen™) is a caged calcium chelator. Upon photolysis, the Kd for Ca2+ increases from 5 nM to 3 mM, resulting in a pulse of free Ca2+.
DMSO, Anhydrous
Anhydrous DMSO (dimethyl sulfoxide; methyl sulfoxide) is recommended for preparing stock solutions of AM ester dyes, reactive dyes and other related moisture-sensitive products.
EDC (EDAC)
EDC (or EDAC) (1-(3-Dimethylaminopropyl-3-ethylcarbodiimide, hydrochloride)) has recently been found to be very useful for fixing in situ chelators, including the fluorescent ion indicators for histological studies following physiological experiments. EDC is also a widely used reagent to activate carboxy groups for amine coupling.