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DFHO

  Cat. No.:  DC36886   Featured
Chemical Structure
1420815-34-4
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More than 5000 active chemicals with high quality for research!
Field of application
DFHO is a fluorogenic ligand of Corn fluorogenic aptamer. The RNA aptamer, Corn binds DFHO with a Kd value of 70 nM and converts it to a fluorescent form, enabling RNA imaging in cells.
Chemicals PropertiesBiological activity COA & MSDSRelated productsDatasheet
Cas No.: 1420815-34-4
Chemical Name: DFHO
Synonyms: DFHO;4-(3,5-Difluoro-4-hydroxybenzylidene)-1-methyl-5-oxo-4,5-dihydro-1H-imidazole-2-carbaldehyde oxime;(5E)-5-[(3,5-Difluoro-4-hydroxyphenyl)methylidene]-3-methyl-2-(nitrosomethylidene)imidazolidin-4-one;5-(3,5-Difluoro-4-hydroxybenzylidene)-2-[(E)-(hydroxyimino)methyl]-3-methyl-3,5-dihydro-4H-imidazol-
SMILES: FC1C(=C(C=C(C=1)/C=C1\C(N(C)C(=CN=O)N\1)=O)F)O
Formula: C12H9F2N3O3
M.Wt: 281.214969396591
Purity: >98%
Sotrage: 2 years -20°C Powder, 2 weeks 4°C in DMSO, 6 months -80°C in DMSO
Description: DFHO is a fluorogenic ligand of Corn fluorogenic aptamer. The RNA aptamer, Corn binds DFHO with a Kd value of 70 nM and converts it to a fluorescent form, enabling RNA imaging in cells.
Target: Kd: 70 nM (Corn binds DFHO)[1]
In Vitro: Corn is tested in E. coli. Minimal fluorescence that is seen in DFHO-treated cells (20 μM) transformed with the empty vector. However robust yellow fluorescence is seen in E. coli expressing Corn[1]. Corn-DFHO exhibits markedly enhanced photostability in vitro. The Corn-DFHO complexes are imaged in mammalian cells. Since the U6 promoter is one of the three major Pol III promoters, Corn from the U6 promoter is expressed and replaced the majority of the U6 sequence with Corn, leaving a minimal 5′ capping element leader sequence. The majority of the cells expressed diffuse yellow fluorescence, most prominently in the cytoplasm)[1]. DFHO exhibits low background fluorescence and cytotoxicity, making it a potentially suitable fluorophore for activation by RNA aptamers and for imaging experiments in living cells[2].
References: [1]. Wenjiao Song, et al. Imaging RNA polymerase III transcription using a photostable RNA-fluorophore complex. Nat Chem Biol. 2017 Nov;13(11):1187-1194. [2]. Hyaeyeong Kim, et al. A Fluorogenic RNA-Based Sensor Activated by Metabolite-Induced RNA Dimerization. Cell Chem Biol. 2019 Dec 19;26(12):1725-1731.e6.
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