493-52-7
493-52-7
Chemical Structure
Methyl red
- CAS. Nr.: 493-52-7
- Formula:C15H15N3O2
- Molecular Weight:269.30
IUPAC Name: (E)-2-((4-(dimethylamino)phenyl)diazenyl)benzoic acid
InChIKey: CEQFOVLGLXCDCX-WUKNDPDISA-N
SMILES: O=C(C1=C(/N=N/C2=CC=C(N(C)C)C=C2)C=CC=C1)O
Biological Activity: Methyl red is a pH-sensitive acid-base indicator and colorimetric reagent with a pKa of 5.1. Methyl red achieves visual judgment of the titration endpoint through reversible structural changes of protonation (red, pH < 4.4) and deprotonation (yellow, pH > 6.2). Methyl red is widely used in acid-base titration in chemical analysis and buffer pH monitoring in biochemistry[1][2].
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Methyl red | 99.55% | Methyl red is a pH-sensitive acid-base indicator and colorimetric reagent with a pKa of 5.1. Methyl red achieves visual judgment of the titration endpoint through reversible structural changes of protonation (red, pH < 4.4) and deprotonation (yellow, pH > 6.2). Methyl red is widely used in acid-base titration in chemical analysis and buffer pH monitoring in biochemistry. | ||||||||||||||||||||
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Methyl red (Standard) | ≥98% | Methyl red (Standard) is the analytical standard of Methyl red (HY-Y0699). This product is intended for research and analytical applications. Methyl red is a pH-sensitive acid-base indicator and colorimetric reagent with a pKa of 5.1. Methyl red achieves visual judgment of the titration endpoint through reversible structural changes of protonation (red, pH < 4.4) and deprotonation (yellow, pH > 6.2). Methyl red is widely used in acid-base titration in chemical analysis and buffer pH monitoring in biochemistry. | ||||||||||||||||||||
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References
- [1]. Ikram M, et al. Biodegradation of Azo Dye Methyl Red by Pseudomonas aeruginosa: Optimization of Process Conditions. Int J Environ Res Public Health. 2022 Aug 12;19(16):9962. [Content Brief]
- [2]. Kasai, et al. Menthol induces surgical anesthesia and rapid movement in fishes. Open Neuroscience Journal 8 (2014): 1-8.
