FAM hydrazide, 6-isomer

Cat. # Quantity Price Lead time
15170 1 mg
$110
in stock
25170 5 mg
$210
in stock
45170 25 mg
$410
in stock
55170 50 mg
$695
in stock
65170 100 mg
$1190
in stock
Found better price? Let us know and we will propose the way forward!

Fluorescein (FAM) is a xanthene dye, a parent of fluorescein dye series. This is a hydrazide derivative for the labeling of carbonyl compounds, aldehydes, and ketones.

Fluorescein is a bright dye that is compatible with a great number of instruments.

Carbohydrates are also often labeled with hydrazides by a protocol involving their oxidation with periodate first, and reacting with dye hydrazide after it.

FAM absorbance and emission spectra

FAM absorbance and emission spectra

Customers also purchased with this product

AF 568 DBCO

Dibenzocyclooctyne (DBCO, ADIBO) containing the orange fluorophore AF 568 for cooper-free labeling azide-tagged biomolecules inside live cells, whole organisms, and inanimate samples.

ROX NHS ester, 6-isomer

Pure 6-isomer of ROX (Rhodamine X, R101) NHS-ester for amine labeling.

R6G NHS ester, 5-isomer

R6G (rhodamine 6G) NHS ester, pure 5-isomer. This dye is often used for the labeling of oligonucleotides for qPCR.

General properties

Appearance: yellow/orange solid
Mass spec M+ increment: 371.1
Molecular weight: 426.81
CAS number: 2183440-65-3 (hydrochloride); 151890-73-2
Molecular formula: C21H15N2ClO6
IUPAC name: Spiro[isobenzofuran-​1(3H)​,​9'-​[9H]​xanthene]​-​6-​carboxylic acid, 3',​6'-​dihydroxy-​3-​oxo-​, hydrazide, hydrochloride
Solubility: good in DMF, DMSO, alcohols
Quality control: NMR 1H, HPLC-MS (95%)
Storage conditions: Storage: 24 months after receival at -20°C in the dark. Transportation: at room temperature for up to 3 weeks. Avoid prolonged exposure to light. Desiccate.
MSDS: Download
Product specifications

Spectral properties

Excitation/absorption maximum, nm: 492
ε, L⋅mol−1⋅cm−1: 74000
Emission maximum, nm: 522
Fluorescence quantum yield: 0.93
CF260: 0.22
CF280: 0.17
Your item has been added. View your cart or proceed to checkout
The count of items is incorrect.