KZR-616 is a potent, peptide epoxyketone-based, and selective dual inhibitor of immunoproteasome subunit LMP7 (low molecular mass polypeptide-7)/LMP2 (multicatalytic endopeptidase complex subunit-1) with IC50 of 39 nM/139 nM . Selective immunoproteasome inhibition is a promising approach for treating autoimmune disorders. KZR-616 has anti-Inflammatory efficacy and is currently in clinical trials for treatment of rheumatic arthritis.
Physicochemical Properties
| Molecular Formula | C30H42N4O8 |
| Molecular Weight | 586.676488399506 |
| Exact Mass | 586.3 |
| CAS # | 1629677-75-3 |
| Related CAS # | Zetomipzomib maleate;2170983-62-5 |
| PubChem CID | 117607904 |
| Appearance | Typically exists as solid at room temperature |
| LogP | 0.4 |
| Hydrogen Bond Donor Count | 4 |
| Hydrogen Bond Acceptor Count | 9 |
| Rotatable Bond Count | 14 |
| Heavy Atom Count | 42 |
| Complexity | 1010 |
| Defined Atom Stereocenter Count | 5 |
| SMILES | O1C[C@]1(C)C([C@H](CC1=CCCC1)NC([C@H]([C@@H](C1C=CC(=CC=1)OC)O)NC([C@H](C)NC(CN1CCOCC1)=O)=O)=O)=O |
| InChi Key | GHYOCDFICYLMRF-UTIIJYGPSA-N |
| InChi Code | InChI=1S/C30H42N4O8/c1-19(31-24(35)17-34-12-14-41-15-13-34)28(38)33-25(26(36)21-8-10-22(40-3)11-9-21)29(39)32-23(16-20-6-4-5-7-20)27(37)30(2)18-42-30/h6,8-11,19,23,25-26,36H,4-5,7,12-18H2,1-3H3,(H,31,35)(H,32,39)(H,33,38)/t19-,23-,25-,26+,30+/m0/s1 |
| Chemical Name | (2S,3R)-N-((S)-3-(cyclopent-1-en-1-yl)-1-((R)-2-methyloxiran-2-yl)-1-oxopropan-2-yl)-3-hydroxy-3-(4-methoxyphenyl)-2-((S)-2-(2-morpholinoacetamido)propanamido)propanamide |
| Synonyms | KZR616KZR-616 KZR 616 |
| 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
| ln Vitro | Additionally, constitutive proteasome β5 subunit (IC50=688 nM) and MECL-1 subunit (IC50=623 nM) are inhibited by zestomipzomib. In MOLT-4 cells, zetomipzomib continues to selectively inhibit LMP7 and LMP2. Similar cytokine inhibitory effects are seen by peripheral blood mononuclear cells (PBMC) and methotrimipzomib (250 nM) [1]. Based on ONX-0914 and PR-924, zetomipzomib is an immunoproteasome selective inhibitor that has been optimized and determined [3]. |
| ln Vivo | In a model of anti-collagen antibody-induced arthritis (CAIA), methotrimipzomib (5 mg/kg; intravenously; repeated doses on days 6, 8, 11, and 13) has demonstrated effectiveness [1]. |
| Animal Protocol |
Animal/Disease Models: 7-8 weeks old female balb/c (Bagg ALBino) mouse (CAIA model) [1] Doses: intravenous (iv) (iv)injection; repeated dosing on days 6, 8, 11 and 13 until day 15 Dosing: 5mg/kg Experimental Results: Demonstrated efficacy in anti-collagen antibody-induced arthritis (CAIA) model. |
| References |
[1]. Required Immunoproteasome Subunit Inhibition Profile for Anti-Inflammatory Efficacy and Clinical Candidate KZR-616 ((2 S,3 R)- N-(( S)-3-(Cyclopent-1-en-1-yl)-1-(( R)-2-methyloxiran-2-yl)-1-oxopropan-2-yl)-3-hydroxy-3-(4-methoxyphenyl). [2]. FRI0296 Kzr-616, a selective inhibitor of the immunoproteasome, blocks the disease progression in multiple models of systemic lupus erythematosus (SLE). Annals of the Rheumatic Diseases 2018;77:685. [3]. Immunoproteasome-selective inhibitors: An overview of recent developments as potential drugs for hematologic malignancies and autoimmune diseases. Eur J Med Chem. 2019;182:111646. |
| Additional Infomation | Zetomipzomib is under investigation in clinical trial NCT04033926 (A Phase 2 Study of KZR-616 to Evaluate Safety and Efficacy in Patients With Active Polymyositis or Dermatomyositis). |
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 | 1.7045 mL | 8.5225 mL | 17.0451 mL | |
| 5 mM | 0.3409 mL | 1.7045 mL | 3.4090 mL | |
| 10 mM | 0.1705 mL | 0.8523 mL | 1.7045 mL |