Mutant IDH1-IN-6 is a specific and orally bioactive mutant IDH inhibitor (antagonist) with IC50s of 6.27 nM, 3.71 nM and 36.9 nM for IDH1 R132H, IDH1 R132C, IDH2 R140Q and IDH2 R172K mutant enzymes respectively. and 11.5 nM. Mutant IDH1-IN-6 has low activity in inhibiting the IDH wild-type enzyme.

Physicochemical Properties

Molecular Formula	C28H36N6O3
Molecular Weight	504.623846054077
Exact Mass	504.284
CAS #	2230263-60-0
PubChem CID	135125140
Appearance	Typically exists as solid at room temperature
LogP	3.7
Hydrogen Bond Donor Count	1
Hydrogen Bond Acceptor Count	7
Rotatable Bond Count	9
Heavy Atom Count	37
Complexity	806
Defined Atom Stereocenter Count	2
SMILES	CCN1C2=NC(=NC=C2COC1=O)N[C@@H](C)C3=CC=C(C=C3)[C@H](CC4CC4)N5CCN(CC5)C(=O)C=C
InChi Key	AFGYODUJVVOZAX-CYFREDJKSA-N
InChi Code	InChI=1S/C28H36N6O3/c1-4-25(35)33-14-12-32(13-15-33)24(16-20-6-7-20)22-10-8-21(9-11-22)19(3)30-27-29-17-23-18-37-28(36)34(5-2)26(23)31-27/h4,8-11,17,19-20,24H,1,5-7,12-16,18H2,2-3H3,(H,29,30,31)/t19-,24-/m0/s1
Chemical Name	7-[[(1S)-1-[4-[(1S)-2-cyclopropyl-1-(4-prop-2-enoylpiperazin-1-yl)ethyl]phenyl]ethyl]amino]-1-ethyl-4H-pyrimido[4,5-d][1,3]oxazin-2-one
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	IDH1 IDH2
ln Vitro	With an IC50 of 1.28 nM, mutant IDH1-IN-6 (example 2) suppresses the formation of 2-hydroxyglutarate in HT1080 cells, suggesting that mutant IDHl R132C is inhibited in cells. Mutant IDH1-IN-6 had no effect on aKG, a metabolite produced by wild-type IDHl, suggesting that mutant IDH1-IN-6 prefers mutant IDHl to wild-type IDHl in cells[1].
ln Vivo	In IDHl mutant xenograft mice, treatment with mutant IDH1-IN-6 (Example 2; 0-32 mg/kg; oral gavage; twice daily; for 3 days) inhibits 2-hydroxyglutarate in a dose-dependent manner[1].
Animal Protocol	Animal/Disease Models: Athymic nude mice (20-22 g) injected with TB08 cells[1] Doses: 1 mg/kg, 2 mg/kg, 4 mg/kg, 8 mg/kg, 16 mg/kg, 32 mg/kg Route of Administration: Oral gavage; twice (two times) daily; for 3 days Experimental Results: Inhibitied of 2-hydroxyglutarate in IDHl mutant xenograft mice.
References	[1]. 7-phenylethylamino-4h-pyrimido[4,5-d][1,3]oxazin-2-one compounds as mutant idh1 and idh2 inhibitors. WO2018111707A1.
Additional Infomation	Crelosidenib is an orally available inhibitor of mutant form of the isocitrate dehydrogenase type 1 (IDH1; IDH-1; IDH1 [NADP+] soluble), including the substitution mutation at arginine (R) in position 132, IDH1(R132), with potential antineoplastic activity. Upon oral administration, crelosidenib specifically and covalently binds to and modifies a single cysteine (Cys269) in the allosteric binding pocket of mutant forms of IDH1, thereby inactivating IDH1. This inhibits the formation of the oncometabolite 2-hydroxyglutarate (2HG) from alpha-ketoglutarate (a-KG). This depletes 2-HG levels, prevents 2HG-mediated signaling and leads to both an induction of cellular differentiation and an inhibition of cellular proliferation in tumor cells expressing mutant forms of IDH1. In addition, crelosidenib has the ability to cross the blood-brain barrier (BBB). IDH1 mutations, including IDH1(R132) mutations, are highly expressed in certain malignancies, including gliomas; they initiate and drive cancer growth by both blocking cell differentiation and catalyzing the formation of 2HG.

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	1.9817 mL	9.9084 mL	19.8169 mL
	5 mM	0.3963 mL	1.9817 mL	3.9634 mL
	10 mM	0.1982 mL	0.9908 mL	1.9817 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.