Structure via PubChem · Public domain (PubChem)
bromthymol blue
Sign in to saveAlso known as bromothymol sulfone phthalein, 4,4'-(3H-2,1-Benzoxathiol-3-ylidene)bis(2-bromo-3-methyl-6-(1-methylethyl)phenol) S,S-dioxide, Bromothymol blue
chemical compound
Chemical data
- Formula
- C27H28Br2O5S
- Molecular weight
- 624.4 g/mol
- IUPAC name
- 2-bromo-4-[3-(3-bromo-4-hydroxy-2-methyl-5-propan-2-ylphenyl)-1,1-dioxo-2,1lambda6-benzoxathiol-3-yl]-3-methyl-6-propan-2-ylphenol
- SMILES
- CC1=C(C=C(C(=C1Br)O)C(C)C)C2(C3=CC=CC=C3S(=O)(=O)O2)C4=C(C(=C(C(=C4)C(C)C)O)Br)C
- InChIKey
- NUHCTOLBWMJMLX-UHFFFAOYSA-N
- XLogP
- 7.6
- Polar surface area
- 92.2 Ų
- H-bond donors
- 2
- H-bond acceptors
- 5
- Formal charge
- 0
via PubChem
Research
266 papers- Bromthymol blue as a pH indicator in mitochondrial suspensions.European journal of biochemistry · 1968
- Intramembrane pH changes and bromthymol blue translocation in liver mitochondria.European journal of biochemistry · 1968
- Inhibition of Escherichia coli serotype O157:H7 by bromthymol blue.Journal of clinical microbiology · 1988
- The interaction of bromthymol blue with hemoglobin and its effect on the oxygen equilibrium.Biochimica et biophysica acta · 1963
- Bromthymol blue as a pH indicator in mitochondrial suspensions.Annals of the New York Academy of Sciences · 1969
via PubMed
~4 min read
Encyclopedic overview
Bromothymol blue (also known as bromothymol sulfone phthalein and BTB) is a pH indicator. It is mostly used in applications that require measuring substances that would have a relatively neutral pH (near 7). A common use is for measuring the presence of carbonic acid in a liquid. It is typically sold in solid form as the sodium salt of the acid indicator.
Structure and properties
Excerpted from Wikipedia’s “bromthymol blue” article, available under the CC BY-SA 4.0 licence.