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Results for "

acid-base indicator

" in MedChemExpress (MCE) Product Catalog:

By Targets:	Biochemical Assay Reagents (3) Fluorescent Dye (9)
By Research Areas:	Cancer (1)

Inhibitors & Agonists

Fluorescent Dye

Biochemical Assay Reagents

Targets Recommended: Amino acid Transporter Amino Acid Derivatives Amino Acid Decarboxylase Hydroxycarboxylic Acid Receptor (HCAR) Amino Acid Oxidase Free Fatty Acid Receptor Fatty Acid Synthase (FASN) Apical Sodium-Dependent Bile Acid Transporter G protein-coupled Bile Acid Receptor 1

Cat. No.	Product Name	Target	Research Areas	Chemical Structure

HY-D0219A

Thymol Blue sodium	Fluorescent Dye	Others
Thymol Blue sodium is an acid-base indicator used to indicate changes in pH. Thymol Blue sodium fades from red to yellow at pH 1.2 to 2.8 and from yellow to blue at pH 8.0 to 9.6. Quantitative detection is achieved through the absorption peak shift (435 nm/596 nm) of the UV-visible spectrum. Thymol blue sodium can be fixed in a silica gel matrix through sol-gel technology to form a solid-state sensor for in-situ pH measurement in the marine environment and acid-base monitoring in the biomedical field .

HY-D0219

Thymol blue Thymolsulphonephthalein	Fluorescent Dye	Others
Thymol blue is a reversible pH indicator that responds to the pH of the solution through structural changes of protonation and deprotonation. Thymol blue is red (HI ^- form) under acidic conditions and blue (I ^2- form) under alkaline conditions. Quantitative detection is achieved through the absorption peak shift (435 nm/596 nm) of the UV-visible spectrum. Thymol blue selectively responds to pH changes, changing from red to yellow at pH 1.2-2.8 and from yellow to blue at pH 8.0-9.6. Thymol blue can be fixed in a silica gel matrix through sol-gel technology to form a solid-state sensor for in-situ pH measurement in the marine environment and acid-base monitoring in the biomedical field[1][2].

HY-D0211

Phenolphthalein	Fluorescent Dye	Cancer
Phenolphthalein is an acid-base indicator that is colorless in an acidic environment and pink in an alkaline environment. Phenolphthalein is genotoxic and potentially carcinogenic to mice. In addition, phenolphthalein is also a blood indicator .

HY-D0265

Thymolphthalein	Fluorescent Dye	Others
Thymolphthalein is an electrochemically active dye due to the presence of thymol fragments. Thymolphthalein is a Phthalein dye used as an acid-base indicator. It is colourless in acid pH and is blue in basic pH .

HY-Y0699

Methyl red	Fluorescent Dye	Others
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 .

HY-W110798

Bromophenol blue indicator (3.0-4.6) 1 Publications Verification	Biochemical Assay Reagents	Others
Bromophenol blue indicator (3.0-4.6) is a synthetic dye commonly used as an acid-base indicator with a transition range of pH 3.0-4.6. Bromophenol blue indicator (3.0-4.6) is water soluble and changes color from yellow to blue as the pH of the solution changes from acidic to basic. Its unique chemical properties make it an important ingredient in a variety of scientific applications, especially in biochemistry and molecular biology. In addition, it can be used as a stain in microbiology and histology. However, Bromophenol blue indicator (3.0-4.6) has potential irritating and staining properties.

HY-118907

Methyl Orange	Fluorescent Dye	Others
Methyl Orange is a soluble azo dye commonly used as an acid-base indicator and for staining cells and tissue sections, as well as for dyeing textiles. Methyl Orange appears red at a pH of 3.1 and changes to bright yellow as the pH increases to 4.4. Methyl Orange (500 mg/L) exhibits cytotoxicity and can cause DNA damage .

HY-W110794

Crystal violet, IND (0.0-2.0)	Biochemical Assay Reagents	Others
Crystal violet, IND (0.0-2.0) is a specialized indicator suitable for strongly acidic systems, which reflects changes in pH within the range of 0.0-2.0 through color changes. Crystal violet, IND (0.0-2.0) is widely used in acid-base titration, chemical analysis, and industrial testing fields .

HY-128545

Nitrazine yellow Nitrazine paper; Phenaphthazine	Biochemical Assay Reagents	Others
Nitrazine yellow (Nitrazine paper; Phenaphthazine) is a pH indicator. The color of Nitrazine yellow changes from yellow to blue in the pH range from 6.0 to 7.0. Nitrazine yellow is a kind of biological materials or organic compounds that are widely used in life science research .

HY-D1484

Ethyl red iodide 1,1'-Diethyl-2,4'-cyanine iodide	Fluorescent Dye	Others
Ethyl red (1,1'-Diethyl-2,4'-cyanine) iodide is an azo dye and acid–base indicator .

HY-125457

α-Naphtholbenzein p-Naphtolbenzein	Fluorescent Dye	Others
α-Naphtholbenzein (p-Naphtolbenzein) is a dye. α-Naphtholbenzein can be used as a pH indicator. α-Naphtholbenzein has a visual transition from yellow (pH0-8.2) to turquoise (pH10). α-Naphtholbenzein is often used during sequential injection analysis technique done for acid-base titrations .

HY-118907R

Methyl Orange (Standard)	Fluorescent Dye	Others
Methyl Orange (Standard) is the analytical standard of Methyl Orange. This product is intended for research and analytical applications. Methyl Orange is a soluble azo dye commonly used as an acid-base indicator and for staining cells and tissue sections, as well as for dyeing textiles. Methyl Orange appears red at a pH of 3.1 and changes to bright yellow as the pH increases to 4.4. Methyl Orange (500 mg/L) exhibits cytotoxicity and can cause DNA damage .

Cat. No.	Product Name	Type

HY-D0219A

Thymol Blue sodium	Fluorescent Dyes/Probes
Thymol Blue sodium is an acid-base indicator used to indicate changes in pH. Thymol Blue sodium fades from red to yellow at pH 1.2 to 2.8 and from yellow to blue at pH 8.0 to 9.6. Quantitative detection is achieved through the absorption peak shift (435 nm/596 nm) of the UV-visible spectrum. Thymol blue sodium can be fixed in a silica gel matrix through sol-gel technology to form a solid-state sensor for in-situ pH measurement in the marine environment and acid-base monitoring in the biomedical field .

Thymol Blue sodium

Fluorescent Dyes/Probes

Thymol Blue sodium is an acid-base indicator used to indicate changes in pH. Thymol Blue sodium fades from red to yellow at pH 1.2 to 2.8 and from yellow to blue at pH 8.0 to 9.6. Quantitative detection is achieved through the absorption peak shift (435 nm/596 nm) of the UV-visible spectrum. Thymol blue sodium can be fixed in a silica gel matrix through sol-gel technology to form a solid-state sensor for in-situ pH measurement in the marine environment and acid-base monitoring in the biomedical field .

HY-D0219

Thymol blue Thymolsulphonephthalein	Fluorescent Dyes/Probes
Thymol blue is a reversible pH indicator that responds to the pH of the solution through structural changes of protonation and deprotonation. Thymol blue is red (HI ^- form) under acidic conditions and blue (I ^2- form) under alkaline conditions. Quantitative detection is achieved through the absorption peak shift (435 nm/596 nm) of the UV-visible spectrum. Thymol blue selectively responds to pH changes, changing from red to yellow at pH 1.2-2.8 and from yellow to blue at pH 8.0-9.6. Thymol blue can be fixed in a silica gel matrix through sol-gel technology to form a solid-state sensor for in-situ pH measurement in the marine environment and acid-base monitoring in the biomedical field[1][2].

Thymol blue

Thymolsulphonephthalein

Fluorescent Dyes/Probes

Thymol blue is a reversible pH indicator that responds to the pH of the solution through structural changes of protonation and deprotonation. Thymol blue is red (HI ^- form) under acidic conditions and blue (I ^2- form) under alkaline conditions. Quantitative detection is achieved through the absorption peak shift (435 nm/596 nm) of the UV-visible spectrum. Thymol blue selectively responds to pH changes, changing from red to yellow at pH 1.2-2.8 and from yellow to blue at pH 8.0-9.6. Thymol blue can be fixed in a silica gel matrix through sol-gel technology to form a solid-state sensor for in-situ pH measurement in the marine environment and acid-base monitoring in the biomedical field[1][2].

HY-D0211

Phenolphthalein	Fluorescent Dyes/Probes
Phenolphthalein is an acid-base indicator that is colorless in an acidic environment and pink in an alkaline environment. Phenolphthalein is genotoxic and potentially carcinogenic to mice. In addition, phenolphthalein is also a blood indicator .

HY-D0265

Thymolphthalein	Indicators Fluorescent Dyes/Probes
Thymolphthalein is an electrochemically active dye due to the presence of thymol fragments. Thymolphthalein is a Phthalein dye used as an acid-base indicator. It is colourless in acid pH and is blue in basic pH .

HY-D1484

Ethyl red iodide 1,1'-Diethyl-2,4'-cyanine iodide	Dyes
Ethyl red (1,1'-Diethyl-2,4'-cyanine) iodide is an azo dye and acid–base indicator .

Cat. No.	Product Name	Type

HY-D0265

Thymolphthalein	Indicators Fluorescent Dyes/Probes
Thymolphthalein is an electrochemically active dye due to the presence of thymol fragments. Thymolphthalein is a Phthalein dye used as an acid-base indicator. It is colourless in acid pH and is blue in basic pH .

HY-Y0699

Methyl red	Indicators
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 .

HY-W110798

Bromophenol blue indicator (3.0-4.6) 1 Publications Verification	Indicators
Bromophenol blue indicator (3.0-4.6) is a synthetic dye commonly used as an acid-base indicator with a transition range of pH 3.0-4.6. Bromophenol blue indicator (3.0-4.6) is water soluble and changes color from yellow to blue as the pH of the solution changes from acidic to basic. Its unique chemical properties make it an important ingredient in a variety of scientific applications, especially in biochemistry and molecular biology. In addition, it can be used as a stain in microbiology and histology. However, Bromophenol blue indicator (3.0-4.6) has potential irritating and staining properties.

Bromophenol blue indicator (3.0-4.6)

1 Publications Verification

Indicators

Bromophenol blue indicator (3.0-4.6) is a synthetic dye commonly used as an acid-base indicator with a transition range of pH 3.0-4.6. Bromophenol blue indicator (3.0-4.6) is water soluble and changes color from yellow to blue as the pH of the solution changes from acidic to basic. Its unique chemical properties make it an important ingredient in a variety of scientific applications, especially in biochemistry and molecular biology. In addition, it can be used as a stain in microbiology and histology. However, Bromophenol blue indicator (3.0-4.6) has potential irritating and staining properties.

HY-W110794

Crystal violet, IND (0.0-2.0)	Indicators
Crystal violet, IND (0.0-2.0) is a specialized indicator suitable for strongly acidic systems, which reflects changes in pH within the range of 0.0-2.0 through color changes. Crystal violet, IND (0.0-2.0) is widely used in acid-base titration, chemical analysis, and industrial testing fields .

HY-128545

Nitrazine yellow Nitrazine paper; Phenaphthazine	Indicators
Nitrazine yellow (Nitrazine paper; Phenaphthazine) is a pH indicator. The color of Nitrazine yellow changes from yellow to blue in the pH range from 6.0 to 7.0. Nitrazine yellow is a kind of biological materials or organic compounds that are widely used in life science research .

HY-125457

α-Naphtholbenzein p-Naphtolbenzein	Indicators
α-Naphtholbenzein (p-Naphtolbenzein) is a dye. α-Naphtholbenzein can be used as a pH indicator. α-Naphtholbenzein has a visual transition from yellow (pH0-8.2) to turquoise (pH10). α-Naphtholbenzein is often used during sequential injection analysis technique done for acid-base titrations .

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