Size | Price | Stock | Qty |
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1mg |
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5mg |
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10mg |
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Other Sizes |
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ln Vitro |
First general protocol. The first step in creating a PKH 26 working solution is to dissolve 1 mg of PKH 26 in 1 mL of DMSO. This will create a 1 mM stock solution. Keep in mind that the stock solution should be stored between -20°C and -80°C in the dark, and that it should not be repeatedly frozen and thawed. 1.2 Making the PKH 26 working solution: To make a 5–10 μM working solution, dilute the stock solution 1:50 or 1:100 using serum-free cell culture medium or PBS. Note: Please change the PKH 26 working solution's concentration as necessary. 2. Suspension cells (6-well plate) 2.1 Cell staining a. Remove the supernatant after centrifuging at 1000g for three to five minutes at 4°C. Use PBS to wash twice, for five minutes each time. The density of cells is 1×106/mL. b. Incubate for 10 to 45 minutes at room temperature after adding 1 milliliter of working solution. C. Discard the supernatant after centrifuging at 400 g for three to four minutes at 4°C. d. Use PBS to wash twice, for five minutes each time. e. Re-suspend cells in PBS or serum-free culture media. observation using flow cytometry or fluorescence microscopy. 2.2 Cells that adhere a. On sterile coverslips, cultivate adherent cells. b. Aspirate extra culture medium after removing the coverslip from the medium. C. To fully submerge the cells, add 100 μL of working solution, give them a little shake, and let them sit at room temperature for five to thirty minutes. d. Wash twice, giving each wash five minutes on medium. observation using flow cytometry or fluorescence microscopy. For a year, store at -80°C with protection from light. Safety Measures 1. Kindly modify the PKH 26 working fluid concentration based on the current circumstances. 2. This product is not to be used for domestic, medical, or any other use; it is only to be used for research and development. 3. Please wear a white coat and disposable gloves for your health and safety.
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References |
[1]. Fischer K, et al. The flow cytometric PKH-26 assay for the determination of T-cell mediated cytotoxic activity. Methods. 2003;31(2):135-142.
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Molecular Formula |
C59H97IN2
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Molecular Weight |
961.32
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CAS # |
154214-55-8
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Appearance |
Typically exists as solids (or liquids in special cases) at room temperature
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SMILES |
C([N+]1=C(C(C)(C)C2C=CC=CC1=2)C=CC=C1C(C2C=CC=CC=2N1CCCCCCCCCCCCCC)(C)C)CCCCCCCCCCCCCCCCCCCCC.[I-]
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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: (1). This product requires protection from light (avoid light exposure) during transportation and storage. (2). Please store this product in a sealed and protected environment (e.g. under nitrogen), avoid exposure to moisture. |
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: 1.67 mg/mL (1.74 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 | 1.0402 mL | 5.2012 mL | 10.4024 mL | |
5 mM | 0.2080 mL | 1.0402 mL | 2.0805 mL | |
10 mM | 0.1040 mL | 0.5201 mL | 1.0402 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.