(R)-RP-6306 may be utilized to study Myt1-mediated diseases and cancer types to slow cancer progression. The activity of (R)-RP-6306 (IC50=1360nM) is worse than (S)-RP-6306 (IC50<10nM).

Physicochemical Properties

Molecular Formula	C18H20N4O2
Molecular Weight	324.38
Exact Mass	324.158
Elemental Analysis	C, 66.65; H, 6.21; N, 17.27; O, 9.86
CAS #	2719793-91-4
Related CAS #	(Rac)-RP-6306;2719749-28-5;RP-6306;2719793-90-3
PubChem CID	156869388
Appearance	Off-white to gray solid powder
LogP	3.1
Hydrogen Bond Donor Count	3
Hydrogen Bond Acceptor Count	4
Rotatable Bond Count	2
Heavy Atom Count	24
Complexity	488
Defined Atom Stereocenter Count	0
SMILES	NC1=C(C2=CC(C)=C(C)N=C2N1C1C(=CC=C(O)C=1C)C)C(=O)N
InChi Key	ARBRHWRTXPWZGN-UHFFFAOYSA-N
InChi Code	InChI=1S/C18H20N4O2/c1-8-5-6-13(23)10(3)15(8)22-16(19)14(17(20)24)12-7-9(2)11(4)21-18(12)22/h5-7,23H,19H2,1-4H3,(H2,20,24)
Chemical Name	2-amino-1-(3-hydroxy-2,6-dimethylphenyl)-5,6-dimethylpyrrolo[2,3-b]pyridine-3-carboxamide
Synonyms	RP-6306; (Rac)-RP-6306; 2719793-90-3; lunresertib; 2719749-28-5; (R)-RP-6306; CHEMBL5199076; ...; 2719793-91-4;
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	PKMYT1
References	[1]. Methods of using myt1 inhibitors. Pantent WO2021195782A1.
Additional Infomation	Lunresertib is an orally bioavailable inhibitor of the human membrane-associated tyrosine- and threonine-specific cdc2-inhibitory kinase (PKMYT1), with potential antineoplastic activity. Upon oral administration, lunresertib targets, binds to and inhibits the activity of PKMYT1. This results in the inhibition of CDK1 phosphorylation, which may promote both premature mitosis and a prolonged mitotic arrest, and lead to the accumulation of unrepaired DNA damage and apoptosis in susceptible tumor cells, such as CCNE1-overexpressing tumor cells. PKMYT1 phosphorylates CDK1 specifically when CDK1 is complexed to cyclins, which blocks progression from G2 into mitosis.

Solubility Data

Solubility (In Vitro)

DMSO : ~160 mg/mL (~493.25 mM)

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	3.0828 mL	15.4140 mL	30.8280 mL
	5 mM	0.6166 mL	3.0828 mL	6.1656 mL
	10 mM	0.3083 mL	1.5414 mL	3.0828 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.