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EC-17 sodium

Alias: EC17 EC-17 EC 17 Folate-FTIC FTIC-Folate EC17 sodium.
Cat No.:V20370 Purity: ≥98%
EC17 sodium (Folate-FITC) is a fluorescein isothiocyanate (FITC)conjugated folic acid with potential antineoplastic activity.
EC-17 sodium
EC-17 sodium Chemical Structure CAS No.: 910661-33-5
Product category: New1
This product is for research use only, not for human use. We do not sell to patients.
Size Price Stock Qty
1mg
5mg
Other Sizes

Other Forms of EC-17 sodium:

  • EC-17 free acid
Official Supplier of:
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Purity & Quality Control Documentation

Purity: ≥98%

Product Description

EC17 sodium (Folate-FITC) is a fluorescein isothiocyanate (FITC) conjugated folic acid with potential antineoplastic activity. It also acts as a FRα-targeting agent that fluoresces at 500nm. EC17 is conjugate consisting of fluorescein isothiocyanate (FITC) conjugated with folate with potential antineoplastic activity. Folate-FITC binds to folate receptors, which are overexpressed on the surfaces of many cancer cells including kidney and ovarian cancer cells. Once bound to the cancer cell through the folate moiety of the conjugate, curculating anti-fluorescein antibodies.may recognize and bind to the FITC moiety, resulting in antibody-dependent cellular cytotoxicity.

Biological Activity I Assay Protocols (From Reference)
ln Vitro
The spectral binding wavelength of fluorescein, which is present in EC-17 disodium salt, is 490-530 nm. By using an ethylenediamine spacer to combine folic acid (vitamin B9) with fluorescein isothiocyanate (FITC), EC-17 disodium salt is created. Folic acid-FITC has a molecular weight of 917 kDa. FITC is a fluorescein gel that has reactive isothiocyanate groups functionalized in it. The chemical known as folic acid-FITC conjugate is fluorescent and negatively charged, and it is used to electrophorese the cell surface of FRα EC-17 disodium salt on HeLa cells. Depending on the molar concentration of Mal and concentration, the signal-to-background ratio (SBR) on HeLa cells varies from 0.97 to 7.32[1].
ln Vivo
Animals injected with EC-17 disodium salt had an average fluorescence signal of 42,234 ± 12,234 au [1]. Folate-FITC fluorescence microscopy reveals no signal in FR-α-negative or benign lesions and a high signal in all cancers expressing FR-α [2].
References

[1]. Intraoperative imaging of folate receptor alpha positive ovarian and breast cancer using the tumor specific agent EC17. Oncotarget. 2016 May 31;7(22):32144-55.

These protocols are for reference only. InvivoChem does not independently validate these methods.
Physicochemical Properties
Molecular Formula
C42H34N10NA2O10S
Molecular Weight
916.824908733368
Exact Mass
895.223
CAS #
910661-33-5
Related CAS #
910661-33-5 (sodium);583037-91-6 (acid);
Appearance
Yellow to orange solid powder
Density
1.4±0.1 g/cm3
Boiling Point
591.3±50.0 °C at 760 mmHg
Flash Point
311.4±30.1 °C
Vapour Pressure
0.0±1.7 mmHg at 25°C
Index of Refraction
1.696
LogP
4.72
InChi Key
BSWYZDWNAFHWBP-ARIINYJRSA-L
InChi Code
InChI=1S/C42H36N10O10S.2Na/c43-41-51-36-35(38(57)52-41)48-23(19-47-36)18-46-21-3-1-20(2-4-21)37(56)50-30(40(60)61)11-12-33(55)44-13-14-45-42(63)49-22-5-8-26(29(15-22)39(58)59)34-27-9-6-24(53)16-31(27)62-32-17-25(54)7-10-28(32)34/h1-10,15-17,19,30,46,53H,11-14,18H2,(H,44,55)(H,50,56)(H,58,59)(H,60,61)(H2,45,49,63)(H3,43,47,51,52,57)/q2*+1/p-2/t30-/m0../s1
Chemical Name
Benzoic acid, 5-[[[[2-[[(4S)-4-[[4-[[(2-amino-1,4-dihydro-4-oxo-6-pteridinyl)methyl]amino]benzoyl]amino]-4-carboxy-1-oxobutyl]amino]ethyl]amino]thioxomethyl]amino]-2-(6-hydroxy-3-oxo-3H-xanthen-9-yl)-, sodium salt
Synonyms
EC17 EC-17 EC 17 Folate-FTIC FTIC-Folate EC17 sodium.
HS Tariff Code
2934.99.9001
Storage

Powder      -20°C    3 years

                     4°C     2 years

In solvent   -80°C    6 months

                  -20°C    1 month

Note: Please store this product in a sealed and protected environment (e.g. under nitrogen), avoid exposure to moisture and light.
Shipping Condition
Room temperature (This product is stable at ambient temperature for a few days during ordinary shipping and time spent in Customs)
Solubility Data
Solubility (In Vitro)
DMSO : ~40 mg/mL (~43.63 mM)
H2O : < 0.1 mg/mL
Solubility (In Vivo)
Solubility in Formulation 1: 1.6 mg/mL (1.75 mM) in 10% DMSO + 40% PEG300 + 5% Tween80 + 45% Saline (add these co-solvents sequentially from left to right, and one by one), suspension solution; with sonication.
For example, if 1 mL of working solution is to be prepared, you can add 100 μL of 16.0 mg/mL clear DMSO stock solution to 400 μL PEG300 and mix evenly; then add 50 μL Tween-80 to the above solution and mix evenly; then add 450 μL normal saline to adjust the volume to 1 mL.
Preparation of saline: Dissolve 0.9 g of sodium chloride in 100 mL ddH₂ O to obtain a clear solution.

Solubility in Formulation 2: 1.6 mg/mL (1.75 mM) in 10% DMSO + 90% (20% SBE-β-CD in Saline) (add these co-solvents sequentially from left to right, and one by one), suspension solution; with ultrasonication.
For example, if 1 mL of working solution is to be prepared, you can add 100 μL of 16.0 mg/mL clear DMSO stock solution to 900 μL of 20% SBE-β-CD physiological saline solution and mix evenly.
Preparation of 20% SBE-β-CD in Saline (4°C,1 week): Dissolve 2 g SBE-β-CD in 10 mL saline to obtain a clear solution.

 (Please use freshly prepared in vivo formulations for optimal results.)
Preparing Stock Solutions 1 mg 5 mg 10 mg
1 mM 1.0907 mL 5.4536 mL 10.9073 mL
5 mM 0.2181 mL 1.0907 mL 2.1815 mL
10 mM 0.1091 mL 0.5454 mL 1.0907 mL

*Note: Please select an appropriate solvent for the preparation of stock solution based on your experiment needs. For most products, DMSO can be used for preparing stock solutions (e.g. 5 mM, 10 mM, or 20 mM concentration); some products with high aqueous solubility may be dissolved in water directly. Solubility information is available at the above Solubility Data section. Once the stock solution is prepared, aliquot it to routine usage volumes and store at -20°C or -80°C. Avoid repeated freeze and thaw cycles.

Calculator

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An example of molarity calculation using the molarity calculator is shown below:
What is the mass of compound required to make a 10 mM stock solution in 5 ml of DMSO given that the molecular weight of the compound is 350.26 g/mol?
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  • The answer of 17.513 mg appears in the Mass box. In a similar way, you may calculate the volume and concentration.

Dilution Calculator allows you to calculate how to dilute a stock solution of known concentrations. For example, you may Enter C1, C2 & V2 to calculate V1, as detailed below:

What volume of a given 10 mM stock solution is required to make 25 ml of a 25 μM solution?
Using the equation C1V1 = C2V2, where C1=10 mM, C2=25 μM, V2=25 ml and V1 is the unknown:
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  • The answer of 62.5 μL (0.1 ml) appears in the Volume (Start) box
g/mol

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Note: Chemical formula is case sensitive: C12H18N3O4  c12h18n3o4
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Definitions of molecular mass, molecular weight, molar mass and molar weight:
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In vivo Formulation Calculator (Clear solution)
Step 1: Enter information below (Recommended: An additional animal to make allowance for loss during the experiment)
Step 2: Enter in vivo formulation (This is only a calculator, not the exact formulation for a specific product. Please contact us first if there is no in vivo formulation in the solubility section.)
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Calculation results

Working concentration mg/mL;

Method for preparing DMSO stock solution mg drug pre-dissolved in μL DMSO (stock solution concentration mg/mL). Please contact us first if the concentration exceeds the DMSO solubility of the batch of drug.

Method for preparing in vivo formulation:Take μL DMSO stock solution, next add μL PEG300, mix and clarify, next addμL Tween 80, mix and clarify, next add μL ddH2O,mix and clarify.

(1) Please be sure that the solution is clear before the addition of next solvent. Dissolution methods like vortex, ultrasound or warming and heat may be used to aid dissolving.
             (2) Be sure to add the solvent(s) in order.

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