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Camonsertib (RP-3500) is a novel, potent and selective ATR kinase inhibitor (ATRi) that exhibits potent antitumor effects with an IC50: 1.00 nM in biochemical assays.RP-3500 is 30-fold more selective for ATR than mTOR (IC50: 120 nM) and more than 2,000-fold more potent than ATM, DNA-PK and PI3Kα kinases. RP-3500 is 30 times more selective for ATR than mTOR (IC50: 120 nM), and 2,000 times more selective than ATM, DNA-PK and PI3Kα kinases.

| Pack Size | Price | USA Warehouse | Global Warehouse | Quantity |
|---|---|---|---|---|
| 1 mg | $172 | In Stock | In Stock | |
| 5 mg | $438 | In Stock | In Stock | |
| 10 mg | $637 | In Stock | In Stock | |
| 25 mg | $993 | In Stock | In Stock | |
| 50 mg | $1,320 | - | In Stock | |
| 100 mg | $1,820 | - | In Stock | |
| 200 mg | $2,450 | - | In Stock | |
| 1 mL x 10 mM (in DMSO) | $396 | In Stock | In Stock |
| Description | Camonsertib (RP-3500) is a novel, potent and selective ATR kinase inhibitor (ATRi) that exhibits potent antitumor effects with an IC50: 1.00 nM in biochemical assays.RP-3500 is 30-fold more selective for ATR than mTOR (IC50: 120 nM) and more than 2,000-fold more potent than ATM, DNA-PK and PI3Kα kinases. RP-3500 is 30 times more selective for ATR than mTOR (IC50: 120 nM), and 2,000 times more selective than ATM, DNA-PK and PI3Kα kinases. |
| Targets&IC50 | ATR:1 nM, mTOR:120 nM |
| In vitro | METHODS: Characterization of the DNA damage response (DDR) to Camonsertib (RP-3500)-mediated ATR inhibition in LoVo and CW-2 human colon cancer cell lines treated with 1 μmol/L RP-3500 for varying durations up to 24 hours. RESULTS Camonsertib (RP-3500) inhibits CHK1 (Ser345) phosphorylation 1-3 hours after initiation of treatment. [2] METHODS: A biochemical assay for ATR/ATRIP inhibition was established using tagged human ATR and ATRIP purified from mammalian cells, with p53 (Ser15) as the phosphorylation substrate. RESULTS In a LoVo cell-based assay, Camonsertib (RP-3500) inhibited gemcitabine-stimulated phosphorylation of the ATR substrate pCHK1 (Ser345) with an IC50 of 0.33 nM. [2] |
| In vivo | METHODS: Patients received Camonsertib (RP-3500) at doses ranging from 5-200 mg once daily or 40 to 80 mg twice daily for 5 days/2 days off (5/2) or 3 days/4 days off ( 3/4), hematological parameters were assessed over a range of doses during treatment. RESULTS Early decrease in monocytes and reticulocytes on day 8 and further decrease in hemoglobin levels on day 15. [1] METHODS: Camonsertib (RP-3500) was used to treat LoVo tumor xenografts in mice, orally administered once a day at a dose of 3/7/15 mg/kg for 17 days, and the effect on LoVo tumor xenografts in mice was observed. RESULTS Camonsertib (RP-3500) treatment of LoVo tumor xenografts in mice produced dose-dependent tumor growth inhibition, with a minimum effective dose (MED) of 7 mg/kg. [2] METHODS: In the CW-2 colon xenograft model, Camonsertib (RP-3500) was administered at doses of 5 and 10 mg/kg to observe the effects on the growth of the mouse CW-2 colon xenograft model. RESULTS Treatment of xenograft mice with Camonsertib (RP-3500) produced statistically significant tumor growth inhibition. [2] |
| Synonyms | RP-3500, ATR inhibitor 4 |
| Molecular Weight | 410.47 |
| Formula | C21H26N6O3 |
| Cas No. | 2417489-10-0 |
| Smiles | C[C@@H]1COCCN1c1cc(c2cnn(-c3cc[nH]n3)c2n1)[C@@]1(O)C[C@@H]2CC[C@H](C1)O2 |
| Storage | store at low temperature,keep away from direct sunlight | Powder: -20°C for 3 years | In solvent: -80°C for 1 year | Shipping with blue ice/Shipping at ambient temperature. | |||||||||||||||||||||||||||||||||||
| Solubility Information | DMSO: 45 mg/mL (109.63 mM), Sonication is recommended. | |||||||||||||||||||||||||||||||||||
| In Vivo Formulation | 10% DMSO+40% PEG300+5% Tween-80+45% Saline: 1.5 mg/mL (3.65 mM), Sonication is recommeded. Please add the solvents sequentially, clarifying the solution as much as possible before adding the next one. Dissolve by heating and/or sonication if necessary. Working solution is recommended to be prepared and used immediately. The formulation provided above is for reference purposes only. In vivo formulations may vary and should be modified based on specific experimental conditions. | |||||||||||||||||||||||||||||||||||
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DMSO
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