Dayang Chem (Hangzhou) Co., Ltd.
China
Product Name: 4,7-dichloro-3-hydroxy-3-[2-(4-methoxyphenyl)-2-oxoethyl]-1H-indol-2-one (YK4-279)
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1037184-44-3

1037184-44-3 structure

Name: YK-4-279
Chemical Name: 4,7-dichloro-3-hydroxy-3-[2-(4-methoxyphenyl)-2-oxoethyl]-1H-indol-2-one
CAS Number: 1037184-44-3
Molecular Formula: C₁₇H₁₃Cl₂NO₄
Molecular Weight: 366.195
Catalog: Biochemical Inhibitor DNA damage DNA/RNA Synthesis inhibitor
Create Date: 2016-08-24 15:09:20
Modify Date: 2025-08-20 18:29:54
YK 4-279 is an inhibitor of RNA Helicase A (RHA) binding to the oncogenic transciption factor EWS-FLI1. YK-4-279 inhibits Ewing's sarcoma family tumor (ESFT) cell growth; YK-4-279 induces apoptosis. IC50 value:Target: RNA Helicase AES-FLI1 is an oncogenic fusion protein found in Ewing’s sarcoma, a family of undifferentiated tumors that occur throughout the body. The binding of RNA helicase A (RHA) to ES-FLI1 promotes its oncogenic function. YK-4-279 is an inhibitor of protein-protein interactions between ES-FLI1 and RHA. At 10 μM, YK-4-279 blocks RHA binding to ES-FLI1 and induces apoptosis of a panel of Ewing’s sarcoma tumor cell lines with IC50 values ranging from 0.5-2 μM. At 1.5 mg per dose, YK-4-279 reduces the growth of Ewing’s sarcoma orthotopic xenografts in mice after treatment with the inhibitor for two weeks.

Name	4,7-dichloro-3-hydroxy-3-[2-(4-methoxyphenyl)-2-oxoethyl]-1H-indol-2-one
Synonyms	4,7-Dichloro-3-hydroxy-3-[2-(4-methoxyphenyl)-2-oxoethyl]-1,3-dihydro-2H-indol-2-one cs-0667 yk4-279 2H-Indol-2-one, 4,7-dichloro-1,3-dihydro-3-hydroxy-3-[2-(4-methoxyphenyl)-2-oxoethyl]- YK-4-279

Description	YK 4-279 is an inhibitor of RNA Helicase A (RHA) binding to the oncogenic transciption factor EWS-FLI1. YK-4-279 inhibits Ewing's sarcoma family tumor (ESFT) cell growth; YK-4-279 induces apoptosis. IC50 value:Target: RNA Helicase AES-FLI1 is an oncogenic fusion protein found in Ewing’s sarcoma, a family of undifferentiated tumors that occur throughout the body. The binding of RNA helicase A (RHA) to ES-FLI1 promotes its oncogenic function. YK-4-279 is an inhibitor of protein-protein interactions between ES-FLI1 and RHA. At 10 μM, YK-4-279 blocks RHA binding to ES-FLI1 and induces apoptosis of a panel of Ewing’s sarcoma tumor cell lines with IC50 values ranging from 0.5-2 μM. At 1.5 mg per dose, YK-4-279 reduces the growth of Ewing’s sarcoma orthotopic xenografts in mice after treatment with the inhibitor for two weeks.
Related Catalog	Signaling Pathways >> Cell Cycle/DNA Damage >> DNA/RNA Synthesis Research Areas >> Cancer
References	[1]. Barber-Rotenberg JS, et al. Single enantiomer of YK-4-279 demonstrates specificity in targeting the oncogene EWS-FLI1. Oncotarget. 2012 Feb;3(2):172-82. [2]. Rahim S, et al. YK-4-279 inhibits ERG and ETV1 mediated prostate cancer cell invasion. PLoS One. 2011 Apr 29;6(4):e19343. [3]. Erkizan HV, et al. A small molecule blocking oncogenic protein EWS-FLI1 interaction with RNA helicase A inhibits growth of Ewing's sarcoma. Nat Med. 2009 Jul;15(7):750-6.

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