MedKoo Cat#: 572348 | Name: Fluorescein-PEG4-Acid
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Description:

WARNING: This product is for research use only, not for human or veterinary use.

Fluorescein-PEG4-Acid is a xanthene dye with excitation/emission maximum 494/517 nm and a free terminal carboxyl acid. Terminal carboxylic acids can react with primary amine groups in the presence of of activators (e.g. EDC, or DCC) to form a stable amide bond. It can be used as a quantum yield standard. The hydrophilic PEG spacer increases solubility in aqueous media and reduces steric hindrance during binding.

Chemical Structure

Fluorescein-PEG4-Acid
Fluorescein-PEG4-Acid
CAS#1807518-76-8

Theoretical Analysis

MedKoo Cat#: 572348

Name: Fluorescein-PEG4-Acid

CAS#: 1807518-76-8

Chemical Formula: C32H34N2O11S

Exact Mass: 654.1883

Molecular Weight: 654.69

Elemental Analysis: C, 58.71; H, 5.23; N, 4.28; O, 26.88; S, 4.90

Price and Availability

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250mg USD 850.00 2 Weeks
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Synonym
Fluorescein-PEG4-Acid
IUPAC/Chemical Name
1-((3',6'-dihydroxy-3-oxo-3H-spiro[isobenzofuran-1,9'-xanthen]-5-yl)amino)-1-thioxo-5,8,11,14-tetraoxa-2-azaheptadecan-17-oic acid
InChi Key
DSZDFOCKVIPCKO-UHFFFAOYSA-N
InChi Code
InChI=1S/C32H34N2O11S/c35-21-2-5-25-27(18-21)44-28-19-22(36)3-6-26(28)32(25)24-4-1-20(17-23(24)30(39)45-32)34-31(46)33-8-10-41-12-14-43-16-15-42-13-11-40-9-7-29(37)38/h1-6,17-19,35-36H,7-16H2,(H,37,38)(H2,33,34,46)
SMILES Code
OC(CCOCCOCCOCCOCCNC(NC(C=C1)=CC2=C1C3(OC2=O)C4=CC=C(O)C=C4OC5=C3C=CC(O)=C5)=S)=O
Appearance
Purity
>95% (or refer to the Certificate of Analysis)
Shipping Condition
Shipped under ambient temperature as non-hazardous chemical. This product is stable enough for a few weeks during ordinary shipping and time spent in Customs.
Storage Condition
Dry, dark and at 0 - 4 C for short term (days to weeks) or -20 C for long term (months to years).
Solubility
Soluble in DMSO, DMF, DCM, Water
Shelf Life
>3 years if stored properly
Drug Formulation
This drug may be formulated in DMSO
Stock Solution Storage
0 - 4 C for short term (days to weeks), or -20 C for long term (months).
HS Tariff Code
2934.99.03.00
More Info
Solubility: Water, DMSO, DMF, DCM Excitation maximum (nm): 494 Emission maximum (nm): 517

Preparing Stock Solutions

The following data is based on the product molecular weight 654.69 Batch specific molecular weights may vary from batch to batch due to the degree of hydration, which will affect the solvent volumes required to prepare stock solutions.

Recalculate based on batch purity %
Concentration / Solvent Volume / Mass 1 mg 5 mg 10 mg
1 mM 1.15 mL 5.76 mL 11.51 mL
5 mM 0.23 mL 1.15 mL 2.3 mL
10 mM 0.12 mL 0.58 mL 1.15 mL
50 mM 0.02 mL 0.12 mL 0.23 mL
1: Chen X, Zhang X, Wang HY, Chen Z, Wu FG. Subcellular Fate of a Fluorescent Cholesterol-Poly(ethylene glycol) Conjugate: An Excellent Plasma Membrane Imaging Reagent. Langmuir. 2016 Oct 4;32(39):10126-10135. Epub 2016 Sep 21. PubMed PMID: 27597442. 2: Chen G, Wang L, Cordie T, Vokoun C, Eliceiri KW, Gong S. Multi-functional self-fluorescent unimolecular micelles for tumor-targeted drug delivery and bioimaging. Biomaterials. 2015 Apr;47:41-50. doi: 10.1016/j.biomaterials.2015.01.006. Epub 2015 Feb 4. PubMed PMID: 25682159; PubMed Central PMCID: PMC4329508. 3: Ruan S, Qian J, Shen S, Chen J, Zhu J, Jiang X, He Q, Yang W, Gao H. Fluorescent carbonaceous nanodots for noninvasive glioma imaging after angiopep-2 decoration. Bioconjug Chem. 2014 Dec 17;25(12):2252-9. doi: 10.1021/bc500474p. Epub 2014 Nov 11. PubMed PMID: 25387274. 4: Ruan S, Wan J, Fu Y, Han K, Li X, Chen J, Zhang Q, Shen S, He Q, Gao H. PEGylated fluorescent carbon nanoparticles for noninvasive heart imaging. Bioconjug Chem. 2014 Jun 18;25(6):1061-8. doi: 10.1021/bc5001627. Epub 2014 May 22. PubMed PMID: 24852402. 5: Paira TK, Saha A, Banerjee S, Das T, Das P, Jana NR, Mandal TK. Fluorescent amphiphilic PEG-peptide-PEG triblock conjugate micelles for cell imaging. Macromol Biosci. 2014 Jul;14(7):929-35. doi: 10.1002/mabi.201400083. Epub 2014 Mar 31. PubMed PMID: 24687698. 6: Okuda T, Kobayashi Y, Yanamoto S, Okamoto H. PEG conjugation of a near-infrared fluorescent probe for noninvasive dual imaging of lung deposition and gene expression by pulmonary gene delivery. J Drug Target. 2012 Nov;20(9):801-12. doi: 10.3109/1061186X.2012.722639. Epub 2012 Sep 26. PubMed PMID: 23009266.