FAM isothiocyanate (FITC), 5-isomer

FAM (Fluorescein)

Cat. #	Quantity	Price	Lead time	Buy this product
4641-1g	1 g	$276	in stock

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FAM-5-isothiocyanate or 5-FITC is an isothiocyanate derivative of fluorescein that reacts with nucleophilic substituents (e.g. amino, hydroxyl, thiol) of biomolecules. It is often used to label antibodies and other probes for use in various fluorescence-based techniques such as microscopy, flow cytometry, and immunofluorescence assays like immunochemistry, Western blotting, and ELISA.

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FAM absorbance and emission spectra

General properties

Appearance:	orange powder
Molecular weight:	389.39
CAS number:	3326-32-7
Molecular formula:	C₂₁H₁₁NO₅S
Solubility:	good in DMF or DMSO
Quality control:	NMR ¹H and HPLC-MS (95+%)
Storage conditions:	24 months after receival at -20°C in the dark. Transportation: at room temperature for up to 3 weeks. Desiccate.
MSDS:	Download
	Product specifications

Spectral properties

Excitation/absorption maximum, nm:	492
Emission maximum, nm:	517

This Product is offered and sold for research purposes only. It has not been tested for safety and efficacy in food, drug, medical device, cosmetic, commercial or any other use. Supply does not express or imply authorization to use for any other purpose, including, without limitation, in vitro diagnostic purposes, in the manufacture of food or pharmaceutical products, in medical devices or in cosmetic products.