Folin's reagent
Folin's reagent structure
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Common Name | Folin's reagent | ||
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| CAS Number | 521-24-4 | Molecular Weight | 260.198 | |
| Density | N/A | Boiling Point | N/A | |
| Molecular Formula | C10H5NaO5S | Melting Point | 289 °C (dec.)(lit.) | |
| MSDS | Chinese USA | Flash Point | N/A | |
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A histochemical examination of the staining of kainate-induced neuronal degeneration by anionic dyes.
Biotech. Histochem. 73(5) , 244-54, (1998) Anionic dyes, notably acid fuchsine, strongly stain the nuclei and cytoplasm of neurons severely damaged by injury or disease. We provide detailed instructions for staining nervous tissue with toluidine blue and acid fuchsine for optimal demonstration of inju... |
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Spectrophotometric determination of aminomethylbenzoic acid using sodium 1,2-naphthoquinone-4-sulfonate as the chemical derivative chromogenic reagent.
Spectrochim. Acta. A. Mol. Biomol. Spectrosc. 66(3) , 656-61, (2007) A new method has been established for the determination of aminomethylbenzoic acid using sodium 1,2-naphthoquinone-4-sulfonate as the chemical derivative chromogenic reagent. This method is based on the formation of a pink compound from the reaction of aminom... |
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Spectophotometric methods for determination of cefdinir in pharmaceutical formulations via derivatization with 1,2-naphthoquinone-4-sulfonate and 4-chloro-7-nitrobenzo-2-oxa-1, 3-diazole.
Drug Test. Anal. 4(12) , 991-1000, (2012) Two new simple, sensitive, accurate, and precise spectrophotometric methods have been developed and validated for the determination of cefdinir (CFD) in bulk drug and in its pharmaceutical formulations. The first method was based on the reaction of CFD with 1... |
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A method for the determination of dimethylamine in air by collection on solid support sorbent with subsequent derivatization and spectrophotometric analysis.
J. Chromatogr. A. 1059(1-2) , 17-24, (2004) A new method for dimethylamine determination in air is reported. The proposed assay is based on the employment of C18-packed solid phase extraction cartridges for sampling. The retained amine is then derivatized inside the cartridges with the reagent 1,2-naph... |
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New spectrophotometric procedure for determining cefotaxime based on derivatization with 1,2-naphthoquinone-4-sulphonate into solid-phase extraction cartridges--application to pharmaceutical and urine samples.
J. Chromatogr. B. Biomed. Sci. Appl. 718(1) , 143-51, (1998) Cefotaxime was derivatised with 1,2-naphthoquinone-4-sulphonate (NQS), extracted into solid-phase cartridges (C18) and detected using a UV-visible detection system. Optimum conditions for this new procedure were: hydrogencarbonate-carbonate buffer, pH 10.5, 5... |
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Spectrophotometric determination of ampicillin sodium in pharmaceutical products using sodium 1,2-naphthoquinone-4-sulfonic as the chromogentic reagent.
Spectrochim. Acta. A. Mol. Biomol. Spectrosc. 60(13) , 3007-12, (2004) Spectrophotometric determination of ampicillin sodium is described. The ampicillin sodium reacts with sodium 1,2-naphthoquinone-4-sulfonic in pH 9.00 buffer solution to form a salmon pink compound, and its maximum absorption wavelength is at 463 nm, epsilon46... |
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Spectrophotometric determination of dapsone in pharmaceutical products using sodium 1,2-naphthoquinone-4-sulfonic as the chromogenic reagent.
Spectrochim. Acta. A. Mol. Biomol. Spectrosc. 60(12) , 2933-9, (2004) Spectrophotometric determination of dapsone is described. The dapsone reacts with sodium 1,2-naphthoquinone-4-sulfonic in pH 6.98 buffer solution to form a salmon pink compound, and its maximum absorption wavelength is at 525 nm, epsilon525=3.68 x 10(4) l mol... |
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Sensitive and selective spectrophotometric assay of gabapentin in capsules using sodium 1, 2-naphthoquinone-4-sulfonate.
Drug Test. Anal. 3(10) , 748-54, (2011) A simple, sensitive, and selective spectrophotometric method has been developed for the determination of gabapentin (GBP) in capsules. The method is based on the reaction of GBP and sodium 1,2-naphthoquinone-4-sulfonate (NQS) in the presence of Clark and Lubs... |
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Spectrophotometric determination of procaine hydrochloride in pharmaceutical products using 1,2-naphthoquinone-4-sulfonic acid as the chromogenic reagent.
Spectrochim. Acta. A. Mol. Biomol. Spectrosc. 59(13) , 3103-10, (2003) Spectrophotometric determination of procaine hydrochloride is described. The procaine hydrochloride reacts with 1,2-naphthoquinone-4-sulfonic acid in pH 3.60 buffer solution to form a salmon pink compound, and its maximum absorption wavelength is at 484 nm, e... |
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Spectrophotometric determination of boron based on charge transfer reaction
Spectrochim. Acta. A. Mol. Biomol. Spectrosc. 79(3) , 599-602, (2011) Boron determination by a charge transfer spectophotometric method is described. Accompanied the reaction, a charge transfer complex can be formed by lysine with sodium 1, 2-naphthoquinone-4-sulfonate and boron in alkaline solution (pH 12.00). Subsequently, a ... |