666-15

666-15 is a potent and selective CREB inhibitor with an IC50 of 81 nM. 666-15 suppresses tumor growth in a breast cancer xenograft model.

Product information

CAS Number: 1433286-70-4

Molecular Weight: 620.52

Formula: C33H31Cl2N3O5

Chemical Name: 3-(3-aminopropoxy)-N-[2-({3-[(4-chloro-2-hydroxyphenyl)carbamoyl]naphthalen-2-yl}oxy)ethyl]naphthalene-2-carboxamide hydrochloride

Smiles: Cl.NCCCOC1C=C2C=CC=CC2=CC=1C(=O)NCCOC1=CC2=CC=CC=C2C=C1C(=O)NC1=CC=C(Cl)C=C1O

InChiKey: LELLCPHHYHLWBH-UHFFFAOYSA-N

InChi: InChI=1S/C33H30ClN3O5.ClH/c34-25-10-11-28(29(38)20-25)37-33(40)27-17-22-7-2-4-9-24(22)19-31(27)42-15-13-36-32(39)26-16-21-6-1-3-8-23(21)18-30(26)41-14-5-12-35;/h1-4,6-11,16-20,38H,5,12-15,35H2,(H,36,39)(H,37,40);1H

Technical Data

Appearance: Solid Power

Purity: ≥98% (or refer to the Certificate of Analysis)

Solubility: DMSO : ≥ 30 mg/mL (48.35 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

In Vitro:

666-15 (73 nM; for 12 hours) significantly blocks the effects caused by MSN overexpression, including cell proliferation, invasion, soft agar colony formation ability, and the expression of CREB downstream genes. 666-15 inhibits MSN overexpression-induced CREB phosphorylation. 666-15 (1μM; pretreated 2 hour) effectively inhibits PE-induced CREB phosphorylation. 666-15 significantly decreases the protein expression of ANP and β-MHC and inhibits the activation of ER stress, including the expression of GRP78, CHOP, ATF6, and the phosphorylation of IRE1 in PE + siRNA + 666-15 group and PE + si-CTRP3 + 666-15 group. 666-15 potently inhibits cancer cell growth. In MDA-MB-231 and MDA-MB-468 cells, the GI50 for 666-15 is 73 and 46 nM, respectively. In A549 and MCF-7 cells, it exhibits robust activity as well with GI50 of 0.47 and 0.31 μM. 666-15 is also found to be a rather weak inhibitor of CREB-CBP interaction with IC50 of 18.27 μM. 666-15 inhibits CREB’s transcription activity in living cells independent of direct CREB or CBP binding interaction. 666-15 is very potent in inhibiting CREB’s transcription activity. 666-15 also inhibits endogenous CREB target gene expression, the transcript level of nuclear receptor related 1 protein (Nurr1/NR4A2).

In Vivo:

666-15 (10 mg/kg; IP; once a week; for 11 weeks) alone can play a good role in inhibiting the growth of breast cancer, and the combination with RP-56976 (DOC) shows a better effect.

Products are for research use only. Not for human use.