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| Other Sizes |
| ln Vitro |
The first step in the characterisation and comparison process was creating a straightforward direct measuring technique based on a pH indicator system that used potassium phosphate as a buffer and bromothymol blue (BTB) as an indicator. Bromothymol blue was used as the pH indicator and potassium phosphate was used as the buffer component in the development of the pH change measurement method [1]. To directly determine the synthesis of 2-2-keto-L-gulonic acid (2-KLG) on plates, three pH indicators were examined. According to the results, bromothymol blue outperformed the other two indicators in terms of a noticeable color shift and an appropriate pH range (blue to yellow at pH 6.5-7.5). The K. vulgare 07 mutant colonies were on the agar plate, therefore after adding bromothymol blue solution (0.1%, w/v) to the plate, the surrounding area's color changed from blue to yellow. 2-KLG is emitted, which causes the colony's surroundings to become more acidic [2].
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| References |
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| Additional Infomation |
Bromothymol blue is a member of the class of 2,1-benzoxathioles that is 2,1-benzoxathiole 1,1-dioxide in which both of the hydrogens at position 3 have been substituted by 3-bromo-4-hydroxy-5-isopropyl-2-methylphenyl groups. It has a role as an acid-base indicator, a dye and a two-colour indicator. It is a 2,1-benzoxathiole, an arenesulfonate ester, an organobromine compound, a polyphenol and a sultone.
Bromthymol Blue is a dye used as an indicator in determining pH. Bromthymol blue is a weak acid. It can be in acid or base form, depending on the pH of the solution. This reagent is yellow in acidic solutions, blue in basic solutions and green in neutral solution. A pH sensitive dye that has been used as an indicator in many laboratory reactions. |
| Molecular Formula |
C27H28BR2O5S
|
|---|---|
| Molecular Weight |
624.3812
|
| Exact Mass |
622.002
|
| CAS # |
76-59-5
|
| PubChem CID |
6450
|
| Appearance |
Pale purple to purple solid powder
|
| Density |
1.5±0.1 g/cm3
|
| Boiling Point |
614.3±55.0 °C at 760 mmHg
|
| Melting Point |
204 °C
|
| Flash Point |
325.3±31.5 °C
|
| Vapour Pressure |
0.0±1.8 mmHg at 25°C
|
| Index of Refraction |
1.634
|
| LogP |
8.6
|
| Hydrogen Bond Donor Count |
2
|
| Hydrogen Bond Acceptor Count |
5
|
| Rotatable Bond Count |
4
|
| Heavy Atom Count |
35
|
| Complexity |
818
|
| Defined Atom Stereocenter Count |
0
|
| InChi Key |
NUHCTOLBWMJMLX-UHFFFAOYSA-N
|
| InChi Code |
InChI=1S/C27H28Br2O5S/c1-13(2)17-11-20(15(5)23(28)25(17)30)27(19-9-7-8-10-22(19)35(32,33)34-27)21-12-18(14(3)4)26(31)24(29)16(21)6/h7-14,30-31H,1-6H3
|
| Chemical Name |
2-bromo-4-[3-(3-bromo-4-hydroxy-2-methyl-5-propan-2-ylphenyl)-1,1-dioxo-2,1λ6-benzoxathiol-3-yl]-3-methyl-6-propan-2-ylphenol
|
| 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: 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)
|
| Solubility (In Vitro) |
DMSO : ~100 mg/mL (~160.16 mM)
H2O : < 0.1 mg/mL |
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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 | 1.6016 mL | 8.0079 mL | 16.0159 mL | |
| 5 mM | 0.3203 mL | 1.6016 mL | 3.2032 mL | |
| 10 mM | 0.1602 mL | 0.8008 mL | 1.6016 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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