RK-701 is a selective and non-genotoxic inhibitor of G9a with IC50 of 23-27 nM. RK-701 selectively upregulates the expression of HbF, γ-Globin, and BGLT3, and downregulates the expression of H3K9me2. RK-701 also inhibits BCL11A and ZBTB7A.

Physicochemical Properties

Molecular Formula	C26H30N4O3
Molecular Weight	446.541406154633
Exact Mass	446.231
CAS #	2648855-18-7
Related CAS #	RK-0133114
PubChem CID	156745798
Appearance	Light yellow to yellow solid powder
LogP	4.1
Hydrogen Bond Donor Count	3
Hydrogen Bond Acceptor Count	4
Rotatable Bond Count	7
Heavy Atom Count	33
Complexity	819
Defined Atom Stereocenter Count	1
SMILES	N1C2=C(C(=O)CC(C)(C)C2)C(C)=C1C(N[C@H](C(NC1=CC=C(C#N)C=C1)=O)CCC1CC1)=O
InChi Key	OWORSODZTADOQX-IBGZPJMESA-N
InChi Code	InChI=1S/C26H30N4O3/c1-15-22-20(12-26(2,3)13-21(22)31)29-23(15)25(33)30-19(11-8-16-4-5-16)24(32)28-18-9-6-17(14-27)7-10-18/h6-7,9-10,16,19,29H,4-5,8,11-13H2,1-3H3,(H,28,32)(H,30,33)/t19-/m0/s1
Chemical Name	N-[(2S)-1-(4-cyanoanilino)-4-cyclopropyl-1-oxobutan-2-yl]-3,6,6-trimethyl-4-oxo-5,7-dihydro-1H-indole-2-carboxamide
HS Tariff Code	2934.99.9001
Storage	Powder-20°C 3 years 4°C 2 years In solvent -80°C 6 months -20°C 1 month
Shipping Condition	Room temperature (This product is stable at ambient temperature for a few days during ordinary shipping and time spent in Customs)

Biological Activity

Targets	G9a 23-27 nM (IC50)
ln Vitro	HbF and γ-globin mRNA expression levels were upregulated by RK-701 (0.01-3 µM; 4 d) without compromising cell viability or erythroid differentiation. RK-701 raises the percentage of cells that express HbF in a concentration-dependent way. RK-701 also selectively increases the expression level of BGLT3 and decreases the percentage of H3K9me2 in β-globin in HUDEP-2 cells and human primary CD34+ cells [1]. In the absence of BCL11A or ZBTB7A, RK-701 (1 µM; 4 d) cannot increase the expression of BGLT3 in HUDEP-2 cells and significantly reduces the proportions of BCL11A and ZBTB7A in BGLT3 [1].
ln Vivo	RK-701 selectively enhances mouse embryonic epsilon globin and dramatically downregulates the expression level of H3K9me2 in peripheral blood cells (20 mg/kg and 50 mg/kg; intraperitoneal injection; 5 weeks, 5 consecutive days per week). RK-701 is not very harmful [1].
Cell Assay	Cell Viability Assay[1] Cell Types: HUDEP-2 cells and CD34+-derived cells. Tested Concentrations: 0.01, 0.03, 0.1, 0.3, 1 and 3 µM. Incubation Duration: 4 d. Experimental Results: demonstrated activation for HbF, γ- Globin and BGLT3. Cell Viability Assay[1] Cell Types: HUDEP-2 cells. Tested Concentrations: 1 µM. Incubation Duration: 4 d. Experimental Results: demonstrated inhibition for BCL11A and ZBTB7A.
References	[1]. A specific G9a inhibitor unveils BGLT3 lncRNA as a universal mediator of chemically induced fetal globin gene expression. Nat Commun. 2023 Jan 12;14(1):23.

Solubility Data

Solubility (In Vitro)

May dissolve in DMSO (in most cases), if not, try other solvents such as H2O, Ethanol, or DMF with a minute amount of products to avoid loss of samples

Solubility (In Vivo)

Note: Listed below are some common formulations that may be used to formulate products with low water solubility (e.g. < 1 mg/mL), you may test these formulations using a minute amount of products to avoid loss of samples. Injection Formulations (e.g. IP/IV/IM/SC) Injection Formulation 1: DMSO : Tween 80： Saline = 10 : 5 : 85 (i.e. 100 μL DMSO stock solution → 50 μL Tween 80 → 850 μL Saline) *Preparation of saline: Dissolve 0.9 g of sodium chloride in 100 mL ddH ₂ O to obtain a clear solution. Injection Formulation 2: DMSO : PEG300 ：Tween 80 : Saline = 10 : 40 : 5 : 45 (i.e. 100 μL DMSO → 400 μLPEG300 → 50 μL Tween 80 → 450 μL Saline) Injection Formulation 3: DMSO : Corn oil = 10 : 90 (i.e. 100 μL DMSO → 900 μL Corn oil) Example: Take the Injection Formulation 3 (DMSO : Corn oil = 10 : 90) as an example, if 1 mL of 2.5 mg/mL working solution is to be prepared, you can take 100 μL 25 mg/mL DMSO stock solution and add to 900 μL corn oil, mix well to obtain a clear or suspension solution (2.5 mg/mL, ready for use in animals). Injection Formulation 4: DMSO : 20% SBE-β-CD in saline = 10 : 90 [i.e. 100 μL DMSO → 900 μL (20% SBE-β-CD in saline)] *Preparation of 20% SBE-β-CD in Saline (4°C，1 week): Dissolve 2 g SBE-β-CD in 10 mL saline to obtain a clear solution. Injection Formulation 5: 2-Hydroxypropyl-β-cyclodextrin : Saline = 50 : 50 (i.e. 500 μL 2-Hydroxypropyl-β-cyclodextrin → 500 μL Saline) Injection Formulation 6: DMSO : PEG300 : castor oil : Saline = 5 : 10 : 20 : 65 (i.e. 50 μL DMSO → 100 μLPEG300 → 200 μL castor oil → 650 μL Saline) Injection Formulation 7: Ethanol : Cremophor : Saline = 10： 10 : 80 (i.e. 100 μL Ethanol → 100 μL Cremophor → 800 μL Saline) Injection Formulation 8: Dissolve in Cremophor/Ethanol (50 : 50), then diluted by Saline Injection Formulation 9: EtOH : Corn oil = 10 : 90 (i.e. 100 μL EtOH → 900 μL Corn oil) Injection Formulation 10: EtOH : PEG300：Tween 80 : Saline = 10 : 40 : 5 : 45 (i.e. 100 μL EtOH → 400 μLPEG300 → 50 μL Tween 80 → 450 μL Saline) Oral Formulations Oral Formulation 1: Suspend in 0.5% CMC Na (carboxymethylcellulose sodium) Oral Formulation 2: Suspend in 0.5% Carboxymethyl cellulose Example: Take the Oral Formulation 1 (Suspend in 0.5% CMC Na) as an example, if 100 mL of 2.5 mg/mL working solution is to be prepared, you can first prepare 0.5% CMC Na solution by measuring 0.5 g CMC Na and dissolve it in 100 mL ddH2O to obtain a clear solution; then add 250 mg of the product to 100 mL 0.5% CMC Na solution, to make the suspension solution (2.5 mg/mL, ready for use in animals). Oral Formulation 3: Dissolved in PEG400 Oral Formulation 4: Suspend in 0.2% Carboxymethyl cellulose Oral Formulation 5: Dissolve in 0.25% Tween 80 and 0.5% Carboxymethyl cellulose Oral Formulation 6: Mixing with food powders Note: Please be aware that the above formulations are for reference only. InvivoChem strongly recommends customers to read literature methods/protocols carefully before determining which formulation you should use for in vivo studies, as different compounds have different solubility properties and have to be formulated differently.  (Please use freshly prepared in vivo formulations for optimal results.)

Preparing Stock Solutions		1 mg	5 mg	10 mg
	1 mM	2.2394 mL	11.1972 mL	22.3944 mL
	5 mM	0.4479 mL	2.2394 mL	4.4789 mL
	10 mM	0.2239 mL	1.1197 mL	2.2394 mL

*Note: Please select an appropriate solvent for the preparation of stock solution based on your experiment needs. For most products, DMSO can be used for preparing stock solutions (e.g. 5 mM, 10 mM, or 20 mM concentration); some products with high aqueous solubility may be dissolved in water directly. Solubility information is available at the above Solubility Data section. Once the stock solution is prepared, aliquot it to routine usage volumes and store at -20°C or -80°C. Avoid repeated freeze and thaw cycles.