RA-9 UPS inhibitor

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MedKoo CAT#: 408099

CAS#: 919091-63-7

Description: RA-9 is a cell permeable and potent inhibitor of the ubiquitin-proteasome system (UPS). RA-9 Inhibits Proteasome-Associated DUBs and Ovarian Cancer in Vitro and in Vivo via Exacerbating Unfolded Protein Responses. Treatment with RA-9 selectively induces onset of apoptosis in ovarian cancer cell lines and primary cultures derived from donors. Loss of cell viability following RA-9 exposure is associated with an unfolded protein response as mechanism to compensate for unsustainable levels of proteotoxic stress. In vivo treatment with RA-9 retards tumor growth, increases overall survival, and was well tolerated by the host.

Price and Availability

Size Price Shipping out time Quantity
50mg USD 250 2 Weeks
100mg USD 450 2 Weeks
200mg USD 750 2 Weeks
500mg USD 1050 2 Weeks
1g USD 1650 2 Weeks
2g USD 2650 2 Weeks
5g USD 5250 2 Weeks
Inquire bulk and customized quantity

Pricing updated 2020-07-07. Prices are subject to change without notice.

RA-9 UPS inhibitor is in stock.

Chemical Structure


Theoretical Analysis

MedKoo Cat#: 408099
Name: RA-9 UPS inhibitor
CAS#: 919091-63-7
Chemical Formula: C19H15N3O5
Exact Mass: 365.1012
Molecular Weight: 365.345
Elemental Analysis: C, 62.46; H, 4.14; N, 11.50; O, 21.90

Synonym: RA-9; RA 9; RA9; RA-9 UPS inhibitor

IUPAC/Chemical Name: (3E,5E)-3,5-Bis[(4-nitrophenyl)methylene]-4-piperidinone


InChi Code: InChI=1S/C19H15N3O5/c23-19-15(9-13-1-5-17(6-2-13)21(24)25)11-20-12-16(19)10-14-3-7-18(8-4-14)22(26)27/h1-10,20H,11-12H2/b15-9+,16-10+

SMILES Code: O=C1/C(CNC/C1=C\C2=CC=C([N+]([O-])=O)C=C2)=C/C3=CC=C([N+]([O-])=O)C=C3

Technical Data

Solid powder

>98% (or refer to the Certificate of Analysis)

Shipping Condition:
Shipped under ambient temperature as non-hazardous chemical. This product is stable enough for a few weeks during ordinary shipping and time spent in Customs.

Storage Condition:
Dry, dark and at 0 - 4 C for short term (days to weeks) or -20 C for long term (months to years).

Soluble in DMSO

Shelf Life:
>3 years if stored properly

Drug Formulation:
This drug may be formulated in DMSO

Stock Solution Storage:
0 - 4 C for short term (days to weeks), or -20 C for long term (months).

HS Tariff Code:

Additional Information

Ovarian cancer is the deadliest of the gynecologic malignancies. Carcinogenic progression is accompanied by upregulation of ubiquitin-dependent protein degradation machinery as a mechanism to compensate with elevated endogenous proteotoxic stress. Recent studies support the notion that deubiquitinating enzymes (DUB) are essential factors in proteolytic degradation and that their aberrant activity is linked to cancer progression and chemoresistance. Thus, DUBs are an attractive therapeutic target for ovarian cancer.


1. Coughlin K, Anchoori R, Iizuka Y, et al. Small-molecule RA-9 inhibits proteasome-associated DUBs and ovarian cancer in vitro and in vivo via exacerbating unfolded protein responses. Clin Cancer Res. 2014;20(12):3174‐3186. doi:10.1158/1078-0432.CCR-13-2658