| Size | Price | Stock | Qty |
|---|---|---|---|
| 5mg |
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| 10mg |
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| 25mg |
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| Other Sizes |
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Purity: ≥98%
| Targets |
Voltage-sensitive fluorescent dye
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|---|---|
| ln Vitro |
Membrane hyperpolarization mediated by 10 μM Evans Blue (EB) in HEKBKα was clearly seen using DiBAC4(3), however the addition of 3 mM tetraethylammonium chloride (TEA) led in a significantly lesser change in membrane potential (MP). Electrodes measure slowly. The peak periods of hyperpolarization assessed by microelectrodes and DiBAC4(3) were 2.3±0.9 s (n=4) and 35.0±2.6 s (n=12, P<0.01) respectively [1].
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| Cell Assay |
Before the fluorescence measurements, cells were incubated in KRH (Krebs-Ringer-HEPES) buffer containing with 100 nM DiBAC4(3) for 20 min at room temperature. The stained cells were used for experiments without washing. The fluorescence emission was collected using a 505 nm dicroic mirror and a BA filter (>520 nm)[1].
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| References | |
| Additional Infomation |
The usefulness of bis-(1,3-dibutylbarbituric acid)-trimethine oxonol (DiBAC4(3)), a voltage-sensitive fluorescent dye, for the measurement of membrane potentials (MPs) was evaluated in HEK293 cells, where alpha or alpha plus beta1 subunits of large conductance Ca2+-activated K+ (BK) channels were expressed (HEKBK alpha and HEKBK alphabeta). The fluorescent intensity of DiBAC4(3) was measured at various potentials under voltage-clamp for calibration to estimate the absolute MP semi-quantitatively. The resting MPs measured with DiBAC4(3) were roughly comparable to those recorded with a microelectrode; the MP in HEKBK alphabeta was 10-20 mV more negative than that in native HEK. In HEKBK alpha, the membrane hyperpolarization induced by 10 microM Evans blue, a BK channel opener, was detected with DiBAC4(3). NS-1619, another BK channel opener, induced gradual but substantial change in F/F(K) even in native HEK, while the BK channel opening effect was detected. Oscillatory membrane hyperpolarization was induced in HEKBK alphabeta by application of 10 microM acetylcholine via increase in intracellular Ca2+ concentration. The oscillatory hyperpolarization was, however, detected only as a slow hyperpolarization with DiBAC4(3). It can be concluded that relatively slow effects of BK channel modulators can be semi-quantitatively measured by use of DiBAC4(3) in HEKBK, while the limited temporal resolution and possible artifacts should be taken into account.[1]
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| Molecular Formula |
C27H40N4O6
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|---|---|
| Molecular Weight |
516.629707336426
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| Exact Mass |
516.29
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| Elemental Analysis |
C, 62.77; H, 7.80; N, 10.84; O, 18.58
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| CAS # |
70363-83-6
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| Appearance |
Pink to red solid powder
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| LogP |
2.901
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| SMILES |
C1(=O)N(CCCC)C(=O)/C(=C\C=CC2C(=O)N(CCCC)C(=O)N(CCCC)C2=O)/C(=O)N1CCCC
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| InChi Key |
ATJCYSYHWGQAET-BUHFOSPRSA-N
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| InChi Code |
InChI=1S/C27H40N4O6/c1-5-9-16-28-22(32)20(23(33)29(26(28)36)17-10-6-2)14-13-15-21-24(34)30(18-11-7-3)27(37)31(25(21)35)19-12-8-4/h13-15,20H,5-12,16-19H2,1-4H3/b14-13+
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| Chemical Name |
(E)-1,3-dibutyl-5-(3-(1,3-dibutyl-2,4,6-trioxohexahydropyrimidin-5-yl)allylidene)pyrimidine-2,4,6(1H,3H,5H)-trione
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| Synonyms |
DiBAC4(3); DiBAC4-(3); DiBAC4 (3);
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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: This product requires protection from light (avoid light exposure) during transportation and storage. |
| 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) |
DMSO : ~50 mg/mL (~96.78 mM)
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|---|---|
| Solubility (In Vivo) |
Note: Listed below are some common formulations that may be used to formulate products with low water solubility (e.g. < 1 mg/mL), you may test these formulations using a minute amount of products to avoid loss of samples.
Injection Formulations
Injection Formulation 1: DMSO : Tween 80： Saline = 10 : 5 : 85 (i.e. 100 μL DMSO stock solution → 50 μL Tween 80 → 850 μL Saline)(e.g. IP/IV/IM/SC) *Preparation of saline: Dissolve 0.9 g of sodium chloride in 100 mL ddH ₂ O to obtain a clear solution. Injection Formulation 2: DMSO : PEG300 ：Tween 80 : Saline = 10 : 40 : 5 : 45 (i.e. 100 μL DMSO → 400 μLPEG300 → 50 μL Tween 80 → 450 μL Saline) Injection Formulation 3: DMSO : Corn oil = 10 : 90 (i.e. 100 μL DMSO → 900 μL Corn oil) Example: Take the Injection Formulation 3 (DMSO : Corn oil = 10 : 90) as an example, if 1 mL of 2.5 mg/mL working solution is to be prepared, you can take 100 μL 25 mg/mL DMSO stock solution and add to 900 μL corn oil, mix well to obtain a clear or suspension solution (2.5 mg/mL, ready for use in animals). View More
Injection Formulation 4: DMSO : 20% SBE-β-CD in saline = 10 : 90 [i.e. 100 μL DMSO → 900 μL (20% SBE-β-CD in saline)] Oral Formulations
Oral Formulation 1: Suspend in 0.5% CMC Na (carboxymethylcellulose sodium) Oral Formulation 2: Suspend in 0.5% Carboxymethyl cellulose Example: Take the Oral Formulation 1 (Suspend in 0.5% CMC Na) as an example, if 100 mL of 2.5 mg/mL working solution is to be prepared, you can first prepare 0.5% CMC Na solution by measuring 0.5 g CMC Na and dissolve it in 100 mL ddH2O to obtain a clear solution; then add 250 mg of the product to 100 mL 0.5% CMC Na solution, to make the suspension solution (2.5 mg/mL, ready for use in animals). View More
Oral Formulation 3: Dissolved in PEG400 (Please use freshly prepared in vivo formulations for optimal results.) |
| Preparing Stock Solutions | 1 mg | 5 mg | 10 mg | |
| 1 mM | 1.9356 mL | 9.6781 mL | 19.3562 mL | |
| 5 mM | 0.3871 mL | 1.9356 mL | 3.8712 mL | |
| 10 mM | 0.1936 mL | 0.9678 mL | 1.9356 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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