Cal-520® maleimide

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Additional ordering information

Telephone	1-800-990-8053
Fax	1-800-609-2943
Email	sales@aatbio.com
International	See distributors
Bulk request	Inquire
Custom size	Inquire
Shipping	Standard overnight for United States, inquire for international

Physical properties

Molecular weight	946.77
Solvent	DMSO

Spectral properties

Excitation (nm)	492
Emission (nm)	515
Quantum yield	0.75¹

Storage, safety and handling

H-phrase	H303, H313, H333
Hazard symbol	XN
Intended use	Research Use Only (RUO)
R-phrase	R20, R21, R22
Storage	Freeze (< -15 °C); Minimize light exposure
UNSPSC	12352200

Alternative formats

Overview SDS Protocol

Molecular weight

946.77

Excitation (nm)

492

Emission (nm)

515

Quantum yield

0.75¹

Calcium measurement is critical for numerous biological investigations. Fluorescent probes that show spectral responses upon binding calcium have enabled researchers to investigate changes in intracellular free calcium concentrations by using fluorescence microscopy, flow cytometry, fluorescence spectroscopy and fluorescence microplate readers. Cal-520 has been proven to be the best green fluorescent calcium indicator. Conceivably this thiol-reactive Cal-520 maleimide could be coupled to an IgG or other carrier molecules to prepare a calcium-sensitive bioconjugate for monitoring calcium change spatially for a specific target.

Calculators

Common stock solution preparation

Table 1. Volume of DMSO needed to reconstitute specific mass of Cal-520® maleimide to given concentration. Note that volume is only for preparing stock solution. Refer to sample experimental protocol for appropriate experimental/physiological buffers.

	0.1 mg	0.5 mg	1 mg	5 mg	10 mg
1 mM	105.622 µL	528.111 µL	1.056 mL	5.281 mL	10.562 mL
5 mM	21.124 µL	105.622 µL	211.245 µL	1.056 mL	2.112 mL
10 mM	10.562 µL	52.811 µL	105.622 µL	528.111 µL	1.056 mL

Molarity calculator

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Mass (Calculate)		Molecular weight		Volume (Calculate)		Concentration (Calculate)		Moles
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Spectrum

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Spectral properties

Excitation (nm)	492
Emission (nm)	515
Quantum yield	0.75¹

Product Family

Name	Excitation (nm)	Emission (nm)	Quantum yield
Cal-520®, AM	492	515	0.75¹
Cal-520L™ maleimide	492	515	0.75¹

Images

Figure 1. Chemical structure for Cal-520® maleimide

Citations

View all 93 citations: Citation Explorer

Advances in Two-Photon Scanning and Scanless Microscopy Technologies for Functional Neural Circuit Imaging
Authors: Schultz, Simon R and Copel, undefined and , Caroline S and Foust, Am and a J , undefined and Quicke, Peter and Schuck, Renaud
Journal: Proceedings of the IEEE (2017): 139--157

High-Throughput Phenotyping of Human Induced Pluripotent Stem Cell-Derived Cardiomyocytes and Neurons Using Electric Field Stimulation and High-Speed Fluorescence Imaging
Authors: Daily, Neil J and Du, Zhong-Wei and Wakatsuki, Tetsuro
Journal: ASSAY and Drug Development Technologies (2017)

HTS-Compatible Voltage-and Ca 2+-Sensitive Dye Recordings from hiPSC-Derived Cardiomyocytes Using the Hamamatsu FDSS Systems
Authors: Kettenhofen, Ralf
Journal: Stem Cell-Derived Models in Toxicology (2017): 135--152

Direct measurement of TRPV4 and PIEZO1 activity reveals multiple mechanotransduction pathways in chondrocytes
Authors: Servin-Vences, M Rocio and Moroni, Mirko and Lewin, Gary R and Poole, Kate
Journal: eLife (2017): e21074

Synergistic drug combination effectively blocks Ebola virus infection
Authors: Sun, Wei and He, Shihua and Martínez-Romero, Carles and Kouznetsova, Jennifer and Tawa, Gregory and Xu, Miao and Shinn, Paul and Fisher, Ethan G and Long, Yan and Motabar, Omid and others, undefined
Journal: Antiviral Research (2017): 165--172

Properties of synchronous spontaneous Ca2+ transients in the mural cells of rat rectal arterioles
Authors: Mitsui, Retsu and Hashitani, Hikaru
Journal: Pflügers Archiv-European Journal of Physiology (2017): 1--14

A Critical Period for the Rapid Modification of Synaptic Properties at the VPm Relay Synapse
Authors: Pan, Libiao and Yang, Junhua and Yang, Qian and Wang, Xiaomeng and Zhu, Liya and Liu, Yali and Lou, Huifang and Xu, Chou and Shen, Ying and Wang, Hao
Journal: Frontiers in molecular neuroscience (2017)

Retinal origin of direction selectivity in the superior colliculus
Authors: Shi, Xuefeng and Barchini, Jad and Ledesma, Hector Acaron and Koren, David and Jin, Yanjiao and Liu, Xiaorong and Wei, Wei and Cang, Jianhua
Journal: Nature Neuroscience (2017)

Bidirectional communication between sensory neurons and osteoblasts in an in vitro co-culture system
Authors: Kodama, Daisuke and Hirai, Takao and Kondo, Hisataka and Hamamura, Kazunori and Togari, Akifumi
Journal: FEBS Letters (2017)

Calcium transient assays for compound screening with human iPSC-derived cardiomyocytes: Evaluating new tools
Authors: Daily, Neil J and Santos, Radleigh and Vecchi, Joseph and Kemanli, Pinar and Wakatsuki, Tetsuro
Journal: Journal of evolving stem cell research (2017): 1