Difluorocarboxyfluorescein Cadaverine, 5-isomer

Unit Size
Price (USD)
Cat.#: 1227-5
Unit size: 5 mg
in stock
Cat.#: 1227-25
Unit size: 25 mg
in stock
Cat.#: 1227-100
Unit size: 100 mg
in stock

Difluorocarboxyfluorescein Cadaverine, 5-isomer (sold under Oregon Green™ 488 Cadaverine, 5-isomer name) is a carbonyl reactive building block used to modify carboxylic groups in the presence of activators (e.g. EDC, or DCC) or activated esters (e.g. NHS esters) through a stable amide bond. It also can be employed as a polar tracer and as a reactive dye for labeling proteins via a carboxylic acid moiety.

Difluorocarboxyfluorescein Cadaverineis a fluorinated analog of fluorescein that overcomes some of the key limitations of fluorescein, including greater photostability and a lower pKa (pKa ~ 4.7 versus 6.4 for fluorescein), making its fluorescence essentially pH insensitive in the physiological pH range.

Difluorocarboxyfluorescein Cadaverine, 5-isomer structurally is identical to Invitrogen’s Oregon Green™ 488 Cadaverine, 5-isomer

Aldehyde, carboxylic acid, ketone
Abs/Em Maxima
494/517 nm
Extinction coefficient
73,000 cm-1M-1
Spectrally similar dyes
Alexa Fluor® 488, DyLight® 488, Fluorescein, Oregon Green 488
Molecular weight
Storage conditions
Shipping conditions
Ambient temperature

Alexa Fluor® Dyes and Oregon Green Dye is a registered trademark of Invitrogen, part of Thermo Fisher Scientific. Fluoroprobes is not affiliated with or endorsed by Thermo Fisher Scientific. AF Dyes are GENERIC versions of Alexa Fluor® Dyes and ARE NOT manufactures, distributed, or affiliated in any way with Thermo Fisher Scientific.