此页面上的某些内容不提供英文版本，默认显示为当前可用的语言。

AF 488 carboxylic acid

AF 488 羧酸

目录号	数量	价格	提前通知时间
11890	1 mg	$125	现货
21890	5 mg	$325	现货
41890	25 mg	$950	现货
51890	50 mg	$1625	现货
61890	100 mg	$2090	现货

Found better price? Let us know and we will propose the way forward!

AF 488 is a bright green-fluorescent dye that is commonly used in microscopy and cell assays because of its photostability. AF 488 can be used with DAPI and is well suited to multiplex assay. AF 488 has high quantum yield and stable fluorescence within the pH range from 4 to 10.

AF 488 carboxylic acid is a non-reactive AF 488 form that can be used as a reference standard in experiments where AF 488 conjugates are used. The carboxylic acid can be also used for the synthesis of activated esters [such as sulfo-NHS, TFP (2,3,5,6-tetrafluorophenol) and STP (4-sulfo-2,3,5,6-tetrafluorophenol)] or modified with hydrazines, hydroxylamines, or amines in aqueous solutions using water-soluble carbodiimides. Thus, this derivative can be conjugated to molecules that contain amino groups, such as proteins, antibodies, and peptides. Therefore, AF 488 carboxylic acid is used during solid-phase peptide synthesis for peptide modification in situ in the presence of activating agents such as HATU.

以ChemDraw格式下载

General properties

Appearance:	orange crystals
Molecular weight:	648.75
Molecular formula:	C₂₁H₁₁K₃N₂O₁₁S₂
IUPAC name:	4-(6-amino-3-iminio-4,5-disulfonato-3H-xanthen-9-yl)isophthalate
Solubility:	good in DMSO, DMF
Quality control:	NMR ¹H, HPLC-MS (95%)
Storage conditions:	Storage: 12 months after receival at -20°C in the dark. Transportation: at room temperature for up to 3 weeks. Avoid prolonged exposure to light.
安全数据表（MSDS）:	下载
	产品规格

Spectral properties

Excitation/absorption maximum, nm:	495
ε, L⋅mol⁻¹⋅cm⁻¹:	71800
Emission maximum, nm:	519
Fluorescence quantum yield:	0.91
CF₂₆₀:	0.16
CF₂₈₀:	0.10