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SML2297

Sigma-Aldrich

Chlorflavonin

≥98% (HPLC)

Synonym(s):

2-(3-Chloro-2-hydroxyphenyl)-5-hydroxy-3,7,8-trimethoxy-4H-1-benzopyran-4-one, F1484

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About This Item

Empirical Formula (Hill Notation):
C18H15ClO7
CAS Number:
23363-64-6
Molecular Weight:
378.76
UNSPSC Code:
51111800

Assay

≥98% (HPLC)

form

powder

color

white to beige

solubility

DMSO: 2 mg/mL, clear

storage temp.

2-8°C

SMILES string

OC1=CC(OC)=C(C2=C1C(C(OC)=C(C3=C(O)C(Cl)=CC=C3)O2)=O)OC

InChI

1S/C18H15ClO7/c1-23-11-7-10(20)12-14(22)18(25-3)15(26-17(12)16(11)24-2)8-5-4-6-9(19)13(8)21/h4-7,20-21H,1-3H3

InChI key

JLSQXYITDXJTKL-UHFFFAOYSA-N

Biochem/physiol Actions

Originally isolated from Aspergillus candidus Link, Chlorflavonin is a non-cytotoxic (up to 100 μM; MRC-5 and THP-1) antibiotic with antifungal activity against certain species of mold fungi (MIC = 0.08 μg/mL against A. amstelodami, A. fumigalus, A. ochraceous; Paecilomyces variotii MIC = 2.5 μg/mL, Botrytis cinerea MIC = 5 μg/mL). Chlorflavonin also exhibits antibiotic activity against M. tuberculosis (MIC90 = 1.56 μM) by targeting acetohydroxyacid synthase (AHAS) catalytic subunit ilvB1. Chlorflavonin is superior to streptomycin against M. tuberculosis inside infected macrophages, synergizes with isoniazid and delamanid, leading to a complete sterilization in liquid cultures.

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Nidja Rehberg et al.
ACS infectious diseases, 4(2), 123-134 (2017-11-08)
The flavonoid natural compound chlorflavonin was isolated from the endophytic fungus Mucor irregularis, which was obtained from the Cameroonian medicinal plant Moringa stenopetala. Chlorflavonin exhibited strong growth inhibitory activity in vitro against Mycobacterium tuberculosis (MIC90 1.56 μM) while exhibiting no
Inge Kjærbølling et al.
Proceedings of the National Academy of Sciences of the United States of America, 115(4), E753-E761 (2018-01-11)
The fungal genus of Aspergillus is highly interesting, containing everything from industrial cell factories, model organisms, and human pathogens. In particular, this group has a prolific production of bioactive secondary metabolites (SMs). In this work, four diverse Aspergillus species (A.
J E Munden et al.
Applied microbiology, 19(5), 718-720 (1970-05-01)
Production of chlorflavonin, a new antifungal antibiotic, by strains of Aspergillus candidus is described. Two wild strains of the fungus had distinctly different chlorflavonin-producing capabilities. One strain produced 25 mug of chlorflavonin per ml per 4 to 5 days in

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