EX-527 is a highly potent and selective inhibitor of SIRT1 with an IC50 ~98 nM. It does not inhibit histone deacetylase (HDAC) or other sirtuin deacetylase family members (IC50 ~20-100 µM). EX-527 has been used to investigate the relationship between SIRT1-mediated deacetylation of p53, p53 activity, and cell survival following DNA damage, as well as many other biological processes involving SIRT1.
CAS Number: 49843-98-3
Molecular Weight: 248.71
Chemical Name: 6-Chloro-2,3,4,9-tetrahydro-1H-carbazole-1-carboxamide
Appearance: Solid Power.
Purity: ≥98% (or refer to the Certificate of Analysis)
Solubility: DMSO up to 50 mM
Shipping Condition: Shipped under ambient temperature as non-hazardous chemical or refer to Certificate of Analysis
Storage Condition: Dry, dark and -20 oC for 1 year or refer to the Certificate of Analysis.
Shelf Life: ≥12 months if stored properly.
Stock Solution Storage: 0 - 4 oC for 1 month or refer to the Certificate of Analysis.
Drug Formulation: To be determined.
HS Tariff Code: 382200
How to use
EX-527 was used at 1-10 µM in vitro and in cellular assays.
EX-527 was administered by intracerebroventricular injection to rats at 5-10 µg to increase hypothalamic acetyl-p53 levels by inhibiting hypothalamic SIRT1 activity (formulation: dissolved in DMSO in a total volume of 5 μL).
- Napper AD, et al. Discovery of indoles as potent and selective inhibitors of the deacetylase SIRT1. (2005) J Med Chem. 48(25):8045-54.
- Solomon JM, et al. Inhibition of SIRT1 catalytic activity increases p53 acetylation but does not alter cell survival following DNA damage. (2006) Mol Cell Biol. 26(1):28-38.
- Peck B, et al. SIRT inhibitors induce cell death and p53 acetylation through targeting both SIRT1 and SIRT2. (2010) Mol Cancer Ther. 9(4):844-55.
- Velásquez DA, et al. The central Sirtuin 1/p53 pathway is essential for the orexigenic action of ghrelin. (2011) Diabetes. 60(4):1177-85.
- Peled T, et al. Nicotinamide, a SIRT1 inhibitor, inhibits differentiation and facilitates expansion of hematopoietic progenitor cells with enhanced bone marrow homing and engraftment. (2012) Exp Hematol. 40(4):342-55.
- Zhao X, et al. The 2.5 Å crystal structure of the SIRT1 catalytic domain bound to nicotinamide adenine dinucleotide (NAD+) and an indole (EX527 analogue) reveals a novel mechanism of histone deacetylase inhibition. (2013) J Med Chem. 56(3):963-9.
Products are for research use only. Not for human use.
Payment & Security
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.