| Size | Price | Stock | Qty |
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| 500mg |
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| 2g |
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| 5g |
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| 10g |
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| 25g |
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| 50g |
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Purity: ≥98%
Evans Blue (Direct Blue 53) is a potent inhibitor of the uptake of L-glutamate into synaptic vesicles, it is also an AMPA/kainate receptor antagonist. Evans Blue inhibits DNA binding of NF-κB at a low concentration of 100 μM. It has proven over the years to be a dependable stain for microscopic determination of cell death. Evans Blue is also a known blocker of a subset of a-amino-3-hydroxy-5-methyl-isoxazole/kainate receptors (IC50=355 nM) for the subunit combination GluR1,2. Evans blue is the first known δ-subunit-specific antagonist of ENaC and activates large-conductance Ca2+-activated K+ channels in sheep bladder myocytes and cultured endothelial cells of human umbilical veins.
| ln Vitro |
Evans Blue is a disazo dye, meaning it doesn't penetrate. Evans Blue penetrates the cytoplasm and nucleus when the plasma membrane is damaged, giving them a blue stain. Cell viability can be examined using Evans Blue[1].
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| ln Vivo |
Regardless of the stain administration route, mice's brains accumulated the same amount of Evans Blue (2% solution; 4 mL/kg) stain following intracerebral hemorrhage caused by collagenase injection [2].
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| Animal Protocol |
Animal/Disease Models: CD-1 mice bearing intracerebral hemorrhage (ICH)[2]
Doses: 2% solution; 4 mL/kg Route of Administration: Jugular vein or intraperitoneal (ip)injection; once Experimental Results: demonstrated the amount of stain accumulated in the brains. |
| References |
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| Additional Infomation |
Evans blue is an organic sodium salt that is the tetrasodium salt of 6,6'-{(3,3'-dimethyl[1,1'-biphenyl]-4,4'-diyl)bis[diazene-2,1-diyl]}bis(4-amino-5-hydroxynaphthalene-1,3-disulfonate). It is sometimes used as a counterstain, especially in fluorescent methods to suppress background autofluorescence. It has a role as a histological dye, a fluorochrome, a teratogenic agent and a sodium channel blocker. It contains an Evans blue(4-).
An azo dye used in blood volume and cardiac output measurement by the dye dilution method. It is very soluble, strongly bound to plasma albumin, and disappears very slowly. See also: Evans Blue (annotation moved to). |
| Molecular Formula |
C34H24N6O14S4.4NA
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|---|---|---|
| Molecular Weight |
960.81
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| Exact Mass |
959.982
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| CAS # |
314-13-6
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| Related CAS # |
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| PubChem CID |
9409
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| Appearance |
White to off-white solid powder
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| LogP |
10.785
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| Hydrogen Bond Donor Count |
4
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| Hydrogen Bond Acceptor Count |
20
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| Rotatable Bond Count |
5
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| Heavy Atom Count |
62
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| Complexity |
1790
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| Defined Atom Stereocenter Count |
0
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| InChi Key |
ATNOAWAQFYGAOY-UHFFFAOYSA-J
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| InChi Code |
InChI=1S/C34H28N6O14S4.4Na/c1-15-11-17(3-7-21(15)37-39-23-9-5-19-25(55(43,44)45)13-27(57(49,50)51)31(35)29(19)33(23)41)18-4-8-22(16(2)12-18)38-40-24-10-6-20-26(56(46,47)48)14-28(58(52,53)54)32(36)30(20)34(24)42;;;;/h3-14,41-42H,35-36H2,1-2H3,(H,43,44,45)(H,46,47,48)(H,49,50,51)(H,52,53,54);;;;/q;4*+1/p-4
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| Chemical Name |
tetrasodium;4-amino-6-[[4-[4-[(8-amino-1-hydroxy-5,7-disulfonatonaphthalen-2-yl)diazenyl]-3-methylphenyl]-2-methylphenyl]diazenyl]-5-hydroxynaphthalene-1,3-disulfonate
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| Synonyms |
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| HS Tariff Code |
2934.99.9001
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| 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, avoid exposure to moisture. |
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| Shipping Condition |
Room temperature (This product is stable at ambient temperature for a few days during ordinary shipping and time spent in Customs)
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| Solubility (In Vitro) |
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| Solubility (In Vivo) |
Solubility in Formulation 1: ≥ 2.5 mg/mL (2.60 mM) (saturation unknown) in 10% DMSO + 40% PEG300 + 5% Tween80 + 45% Saline (add these co-solvents sequentially from left to right, and one by one), clear solution.
For example, if 1 mL of working solution is to be prepared, you can add 100 μL of 25.0 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: ≥ 2.5 mg/mL (2.60 mM) (saturation unknown) in 10% DMSO + 90% (20% SBE-β-CD in Saline) (add these co-solvents sequentially from left to right, and one by one), clear solution. For example, if 1 mL of working solution is to be prepared, you can add 100 μL of 25.0 mg/mL clear DMSO stock solution to 900 μL of 20% SBE-β-CD physiological saline solution and mix evenly. Preparation of saline: Dissolve 0.9 g of sodium chloride in 100 mL ddH₂ O to obtain a clear solution. View More
Solubility in Formulation 3: 2.5 mg/mL (2.60 mM) in 10% DMSO + 90% Corn Oil (add these co-solvents sequentially from left to right, and one by one), clear solution. |
| Preparing Stock Solutions | 1 mg | 5 mg | 10 mg | |
| 1 mM | 1.0408 mL | 5.2039 mL | 10.4079 mL | |
| 5 mM | 0.2082 mL | 1.0408 mL | 2.0816 mL | |
| 10 mM | 0.1041 mL | 0.5204 mL | 1.0408 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.
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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