10 Results for "

deprotonation

" in MedChemExpress (MCE) Product Catalog:
Products (10)

10 Results for "deprotonation" in MCE Product Catalog:

Cat. No.: HY-Y0699
CAS No.: 493-52-7
Target:  

Fluorescent Dye

Research Areas:  

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 .
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Cat. No.: HY-D0219
CAS No.: 76-61-9
Synonyms: Thymolsulphonephthalein
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].
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Cat. No.: HY-D0077
CAS No.: 195136-58-4
Synonyms: Oregon green 488
Target:  

Fluorescent Dye

Research Areas:  

Others

2',7'-Difluorofluorescein (Oregon green 488) is a fluorescein derivative and a pH-sensitive fluorescent probe (pKa ~4.7). Upon excitation at 488 nm, 2',7'-Difluorofluorescein exhibits pH-sensitive fluorescence intensity through the formation of dianions, while its pH sensitivity decreases under excitation at 450 nm, allowing its use in ratiometric pH analysis. 2',7'-Difluorofluorescein can be used for the quantitative analysis of pH values in the range of 2-7 in submicron aerosol particles. 2',7'-Difluorofluorescein undergoes buffer-mediated and buffer-free excited-state proton transfer between different protonated forms, and its cationic form undergoes rapid excited-state deprotonation. 2',7'-Difluorofluorescein is resistant to photodegradation, maintains stable absorption and fluorescence properties within the physiological pH range, and serves as a fluorescent protein label, a component of Ca 2+ indicators, a fluorescent imaging agent, and an anisotropy probe .
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Cat. No.: HY-W244398
CAS No.: 13239-97-9
2-Thiocytidine is a natural thionucleoside in prokaryotic tRNA, which is biosynthesized under the catalysis of intracellular sulfur transferase systems and possesses multiple activities such as metal coordination and nucleic acid conformation regulation. 2-Thiocytidine forms stable Zn 2+ and Cd 2+ complexes via its (C2) S group, with partial involvement of N3; metal binding acidifies the deprotonation process of (C4) NH2. 2-Thiocytidine can be used in related research in various fields including nanotechnology and click chemistry for interstrand DNA crosslinking .
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Cat. No.: HY-P4566
CAS No.: 52899-09-9
Synonyms: Pro-Val
Target:  

Dipeptidyl Peptidase

Research Areas:  

Others

H-Pro-Val-OH is a deprotonation dipeptide containing proline, which can catalyze the Michael addition reaction of acetone to trans-β-nitrostyrene. H-Pro Val OH can also serve as a substrate for fibroblast enzymes and prolinase, and has potential applications in biochemical analysis .
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Cat. No.: HY-D2321
CAS No.: 2324152-35-2
Lyso Flipper-TR 29 is a Flipper probe that can label lysosomes. Lyso Flipper-TR 29 enters lysosomes and late endosomes by transient deprotonation to cross their membranes in neutral form .
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Cat. No.: HY-W110780
CAS No.: 845-10-3
Methyl red sodium is a pH-sensitive acid-base indicator and colorimetric reagent with a pKa of 5.1. Methyl red sodium 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 sodium is widely used in acid-base titration in chemical analysis and buffer pH monitoring in biochemistry .
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Cat. No.: HY-D0114
CAS No.: 779-27-1
3-Carboxy-7-Hydroxycoumarin is a 7-hydroxycoumarin (umbelliferone) fluorescent dye and antibody-conjugated labeling agent with UV excitation properties. 3-Carboxy-7-Hydroxycoumarin undergoes deprotonation in neutral-to-alkaline environments, producing strong blue fluorescence. The absorption/emission maxima of 3-Carboxy-7-Hydroxycoumarin are 386/448 nm. 3-Carboxy-7-Hydroxycoumarin is applicable for related research such as fluorescent probe synthesis and covalent protein labeling .
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Cat. No.: HY-Y0699R
CAS No.: 493-52-7
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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Cat. No.: HY-W145108
CAS No.: 63451-28-5
Methyl red hydrochloride is a pH-sensitive acid-base indicator and colorimetric reagent with a pKa of 5.1. Methyl red hydrochloride 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 hydrochloride is widely used in acid-base titration in chemical analysis and buffer pH monitoring in biochemistry .
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