493-52-7
Chemical Structure
Methyl red
- CAS No.: 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].
| Cat. No. | Product Name | Purity | Description | Pricing | |||||||||||||||||||
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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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Similarity Score 0.98
HY-W145108Methyl red hydrochloride -
Similarity Score 0.89
HY-W110780Methyl red sodium -
Similarity Score 0.87
HY-W110784Ethyl red, 98% -
Similarity Score 0.83
HY-D0796Propyl red -
Similarity Score 0.81
HY-W130128m-Methyl red -
Similarity Score 0.80
HY-D1045Dabcyl acid -
Similarity Score 0.77
HY-W025785Methyl yellow -
Similarity Score 0.75
HY-D1045ADabcyl acid sodium -
Similarity Score 0.75
HY-W11169042-(2-Phenyldiazenyl)-1,4-benzenedicarboxylic acid -
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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.
