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Ninhydrin-sodium molybdate chromogenic analytical probe for the assay of amino acids and proteins.
Anantharaman S, Padmarajaiah N, Al-Tayar NGS, Shrestha AK. Anantharaman S, et al. Spectrochim Acta A Mol Biomol Spectrosc. 2017 Feb 15;173:897-903. doi: 10.1016/j.saa.2016.10.040. Epub 2016 Oct 21. Spectrochim Acta A Mol Biomol Spectrosc. 2017. PMID: 27821372
A sensitive method has been proposed for the quantification of amino acids and proteins using ninhydrin and sodium molybdate as chromogenic substrates in citrate buffer of pH5.6. A weak molybdate-hydrindantin complex plays the role in the formation of Ruhemann's purple. .. …
A sensitive method has been proposed for the quantification of amino acids and proteins using ninhydrin and sodium molybdate as chromogenic …
Cyanide reaction with ninhydrin: elucidation of reaction and interference mechanisms.
Drochioiu G, Mangalagiu I, Avram E, Popa K, Dirtu AC, Druta I. Drochioiu G, et al. Anal Sci. 2004 Oct;20(10):1443-7. doi: 10.2116/analsci.20.1443. Anal Sci. 2004. PMID: 15524199 Free article.
Nevertheless, this paper demonstrates that the reported assay is based on a novel reaction of cyanide with 2,2-dihydroxy-1,3-indanedione, which affords purple or blue colored salts of 2-cyano-1,2,3-trihydroxy-2H indene. Hydrindantin is merely an intermediary of the reactio …
Nevertheless, this paper demonstrates that the reported assay is based on a novel reaction of cyanide with 2,2-dihydroxy-1,3-indanedione, wh …
Sustained delivery of difluoromethylornithine (DFMO) by means of implantable ceramic devices.
Benghuzzi HA, Bajpai PK. Benghuzzi HA, et al. J Invest Surg. 1988;1(3):163-70. doi: 10.3109/08941938809141102. J Invest Surg. 1988. PMID: 3154094
The concentration of DFMO was determined by a modified ninhydrin hydrindantin method. Data obtained in this investigation showed that the levels of DFMO in the serum of rats in groups I and II were 41.87 +/- 6.8 and 237.62 +/- 13.3 micrograms/mL, respectively. ...
The concentration of DFMO was determined by a modified ninhydrin hydrindantin method. Data obtained in this investigation showed that …
Transient spectroscopy of ninhydrin.
Kleinman MH, Telo JP, Vieira AJ, Bohne C, Netto-Ferreira JC. Kleinman MH, et al. Photochem Photobiol. 2003 Jan;77(1):10-7. doi: 10.1562/0031-8655(2003)077<0010:tson>2.0.co;2. Photochem Photobiol. 2003. PMID: 12856876
A pKa of 0.77 was determined for the protonation equilibrium. The formation of hydrindantin is proposed to occur through the dimerization of the ketyl radical or the radical anion (or both). ...
A pKa of 0.77 was determined for the protonation equilibrium. The formation of hydrindantin is proposed to occur through the dimeriza …
Polyfluoroether derivatives via nucleophilic fluorination of glyoxal hydrates with deoxofluor.
Singh RP, Twamley B, Shreeve JM. Singh RP, et al. J Org Chem. 2002 Mar 22;67(6):1918-24. doi: 10.1021/jo016245r. J Org Chem. 2002. PMID: 11895411
The yields of the mixed polyfluoroethers depend on the ratio of the two different glyoxal hydrates used. Reactions of some other hydrates, such as hydrindantin dihydrate (10) and 1,1,1,5,5,5-hexafluoro-2,2,4,4-pentanetetrol (11), were also studied with Deoxofluor to give a …
The yields of the mixed polyfluoroethers depend on the ratio of the two different glyoxal hydrates used. Reactions of some other hydrates, s …
11 results