2,4-dinitrophenylhydrazine

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2,4-dinitrophenylhydrazine

[¦tü ¦fȯr dī¦nī·trō‚fen·əl′hī·drə‚zēn]
(organic chemistry)
(NO2)2C6H3-NHNH2 A red, crystalline powder with a melting point of approximately 200°C; soluble in dilute inorganic acids; used as a reagent for determination of ketones and aldehydes.
References in periodicals archive ?
Tenders are invited for provide ambient air samplers in order to collect sub-ambient pressure samples in canisters, per environmental protection agency (epa) method to-15 and carbonyl samples in dinitrophenylhydrazine (dnph) cartridges, per epa method to-11a.
The oxidative damage to protein was measured by the determination of carbonyl groups based on the reaction with dinitrophenylhydrazine (DNPH) (26).
Coloured complex formed by the reaction of ascorbic acid in the supernatant with dinitrophenylhydrazine (DNPH) was read spectrophotometrically at 530 nm [16].
The derivatizing reagents for the sensitive determination of a-keto acids using HPLC are mainly 12-phenylenediamine [42] 12-diamino-45-dimethoxybezene [31] 45-diaminophthalhydrazide dihydrochloride [43] 24- dinitrophenylhydrazine [44] 4-hydrazino-2- stilbenzole [45] and phenylhydrazine [36] using spectrophotometric spectrofluorometric or chemiluminiscens detection.
The solution was filtered and a few drops of 2,4 dinitrophenylhydrazine solution (Brady's reagent) was added and shaken.
They arrived at the scene at 11am and removed the dinitrophenylhydrazine from the building.
RCCs may be specifically evaluated, but their chemical reactivity may interfere with sample preparation, necessitating their stabilization as dinitrophenylhydrazine derivatives (11).
The determination of ascorbic acid in bile blood and urine through 2,4 dinitrophenylhydrazine derivatives of dehydroascorbic.
Cloudy 2,4 dinitrophenylhydrazine (DNPH) urine test, fever, vomiting, or positive ketones are indications to solicit physician advise.
15% 2,4 dinitrophenylhydrazine in 2 N HCl were added and incubated for 5 min at 37 [degrees] C.