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  2. 5-FAM

5-FAM (Synonyms: 5-Carboxyfluorescein)

Cat. No.: HY-66022 Purity: 99.91%
Handling Instructions

5-FAM (5-Carboxyfluorescein) is a green fluorescent reagent used for in situ labeling peptides, proteins and nucleotides. 5-FAM is a single isomer with Ex/Em of 490 nm/520 nm.

For research use only. We do not sell to patients.

5-FAM Chemical Structure

5-FAM Chemical Structure

CAS No. : 76823-03-5

Size Price Stock Quantity
Free Sample (0.5-1 mg)   Apply Now  
10 mM * 1 mL in DMSO USD 66 In-stock
Estimated Time of Arrival: December 31
100 mg USD 60 In-stock
Estimated Time of Arrival: December 31
500 mg USD 120 In-stock
Estimated Time of Arrival: December 31
1 g   Get quote  
5 g   Get quote  

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Based on 1 publication(s) in Google Scholar

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Description

5-FAM (5-Carboxyfluorescein) is a green fluorescent reagent used for in situ labeling peptides, proteins and nucleotides. 5-FAM is a single isomer with Ex/Em of 490 nm/520 nm[1].

In Vitro

5-FAM contains a carboxylic acid that can be used to react with primary amines via carbodiimide activation of the carboxylic acid. Fluorescein is the most common fluorescent derivatization reagent for labeling biomolecules. In addition to its relatively high absorptivity, excellent fluorescence quantum yield, and good water solubility, fluorescein has an excitation maximum that closely matches the 488 nm spectral line of the argon-ion laser[1].

MCE has not independently confirmed the accuracy of these methods. They are for reference only.

Molecular Weight

376.32

Formula

C₂₁H₁₂O₇

CAS No.
SMILES

O=C1OC2(C3=C(OC4=C2C=CC(O)=C4)C=C(O)C=C3)C5=C1C=C(C(O)=O)C=C5

Shipping

Room temperature in continental US; may vary elsewhere.

Storage

4°C, protect from light

*In solvent : -80°C, 6 months; -20°C, 1 month (protect from light)

Solvent & Solubility
In Vitro: 

DMSO : ≥ 31 mg/mL (82.38 mM)

H2O : 1 mg/mL (2.66 mM; ultrasonic and warming and heat to 80°C)

*"≥" means soluble, but saturation unknown.

Preparing
Stock Solutions
Concentration Solvent Mass 1 mg 5 mg 10 mg
1 mM 2.6573 mL 13.2866 mL 26.5731 mL
5 mM 0.5315 mL 2.6573 mL 5.3146 mL
10 mM 0.2657 mL 1.3287 mL 2.6573 mL
*Please refer to the solubility information to select the appropriate solvent.
In Vivo:
  • 1.

    Add each solvent one by one:  10% DMSO    40% PEG300    5% Tween-80    45% saline

    Solubility: ≥ 2.5 mg/mL (6.64 mM); Clear solution

  • 2.

    Add each solvent one by one:  10% DMSO    90% (20% SBE-β-CD in saline)

    Solubility: ≥ 2.5 mg/mL (6.64 mM); Clear solution

*All of the co-solvents are provided by MCE.
References

Purity: 99.91%

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Keywords:

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5-FAM
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HY-66022
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