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163260

Sigma-Aldrich

4-Chlor-7-nitrobenzofurazan

98%

Synonym(e):

4-Chlor-7-nitro-benzo-2-oxa-1,3-diazol, NBD-chlorid

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€ 46,80
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About This Item

Empirische Formel (Hill-System):
C6H2ClN3O3
CAS-Nummer:
Molekulargewicht:
199.55
Beilstein:
614212
EG-Nummer:
MDL-Nummer:
UNSPSC-Code:
12352100
PubChem Substanz-ID:
NACRES:
NA.22

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Qualitätsniveau

Assay

98%

Form

powder

mp (Schmelzpunkt)

97-99 °C (lit.)

Löslichkeit

chloroform: soluble 50 mg/mL, clear to slightly hazy, faintly yellow to yellow

Funktionelle Gruppe

chloro
nitro

SMILES String

[O-][N+](=O)c1ccc(Cl)c2nonc12

InChI

1S/C6H2ClN3O3/c7-3-1-2-4(10(11)12)6-5(3)8-13-9-6/h1-2H

InChIKey

IGHBXJSNZCFXNK-UHFFFAOYSA-N

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Allgemeine Beschreibung

4-Chloro-7-nitrobenzofurazan (NBD-Cl) is a highly sensitive chromogenic and fluorogenic reagent.[1] It is reported to react spontaneously with trans-1-methoxy-3-(trimethylsilyloxy)-1,3-butadiene (Danishefsky′s diene), to afford regioselectively the silyl enol ether, via normal electron-demand Diels-Alder (NEDDA) reaction.[1] A study of the molecular structure, vibrational spectra and NBO (Natural Bond Orbital) analysis of NBD–Cl has been undertaken.[2] Its utility as a pre-column derivatization agent has been examined.[3][4]

Anwendung

4-Chloro-7-nitrobenzofurazan (NBD-chloride) was used in the following studies:
  • Synthesis of fluorescent phospholipid-derivative, NBD-didecanoylphosphatidylethanolamine[5]
  • Synthesis of functionalized hydroxynaphthofurazan.[6]
  • Spectrophotometric and spectrofluorometric determination of clemastine hydrogen fumarate, loratadine, losartan potassium and ramipril in pharmaceutical formulations.[1]
  • Synthesis of 7-nitrobenzofurazan (NBD)-labeled maleimide, via Diels-Alder reaction.[7]

Piktogramme

Exclamation mark

Signalwort

Warning

H-Sätze

Gefahreneinstufungen

Eye Irrit. 2 - Skin Irrit. 2

Lagerklassenschlüssel

11 - Combustible Solids

WGK

WGK 3

Persönliche Schutzausrüstung

dust mask type N95 (US), Eyeshields, Faceshields, Gloves


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Gholamreza Bahrami et al.
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences, 857(2), 322-326 (2007-08-21)
A sensitive and rapid high-performance liquid chromatographic method for the analysis of fluvoxamine, a selective serotonin reuptake inhibitor in human serum, is described using 4-chloro-7-nitrobenzofurazan as pre-column derivatization agent. The drug and an internal standard (fluoxetine) were extracted from 0.25
Marco Filice et al.
Organic & biomolecular chemistry, 9(15), 5535-5540 (2011-06-23)
Lipase B from Candida antarctica (CAL-B) has been site-directedly modified by the introduction of a trans,trans-hexadiene moiety onto lipase molecules, identified by MALDI-TOF. This modification on CAL-B permitted its immobilization on Q-Sepharose supports in excellent yields (>95%) when native lipase
Molecular structure, vibrational, UV and NBO analysis of 4-chloro-7-nitrobenzofurazan by DFT calculations.
Kurt M, et al.
Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy, 79(5), 1162-1170 (2011)
Gholamreza Bahrami et al.
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences, 850(1-2), 400-404 (2007-01-02)
A new, sensitive and simple high-performance liquid chromatographic method for analysis of topiramate, an antiepileptic agent, using 4-chloro-7-nitrobenzofurazan as pre-column derivatization agent is described. Following liquid-liquid extraction of topiramate and an internal standard (amlodipine) from human serum, derivatization of the
4-Chloro-7-nitrobenzofurazan as a Diels-Alder reagent. A facile access to highly functionalized naphthofurazans.
Vichard D, et al.
Tetrahedron Letters, 42(43), 7571-7574 (2001)

Artikel

The Diels–Alder reaction is the reaction between a conjugated diene and an alkene (dienophile) to form unsaturated six-membered rings. It is also referred to as a cycloaddition.

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    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

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      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/449/386/product-dating-information-mk.pdf

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