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Purity: ≥98%
A-966492 is a selective and orally bioavailable PARP [poly(ADP-ribose) polymerase] inhibitor with potential anticancer activity. It inhibits PARP1 and PARP2 with Kis of 1 nM and 1.5 nM, respectively. In a B16-F10 melanoma model, it also showed exceptional in vivo antitumor efficacy when combined with temozolomide.
| Targets |
PARP-1 ( Ki = 1 nM ); PARP-2 ( Ki = 1.5 nM )
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| Enzyme Assay |
The buffer used for the enzyme assay contains 50 mM Tris, pH 8.0, 1 mM dithiothreitol (DTT), and 4 mM magnesium chloride. 1.5 μM [3H]-NAD+ (1.6 μCi/mmol), 200 nM biotinylated histone H1, 200 nM slDNA, and 1 nM or 4 nM PARP-2 enzyme are the ingredients of the PARP reaction. Autoreactions in 100 μL volumes in white 96-well plates are performed using SPA bead-based detection. 50 μL of the 2X NAD+ substrate mixture is added to 50 μL of the 2× enzyme mixture, which contains DNA and PARP, to start the reaction. The addition of 150 μL of 1.5 mM benzamide (approximately 1×103-fold over its IC50) stops these reactions. The stopped reaction mixtures are put in amounts of 170 μL to Flash Plates coated with streptavidin, incubated for an hour, and then counted using a TopCount microplate scintillation counter. Inhibition curves at varied substrate concentrations are used to calculate ki data.
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| Cell Assay |
In a 96-well plate, C41 cells are exposed to A-966492 for 30 minutes. DNA damage with 1 mM H2O2 for 10 minutes activates PARP. After one ice-cold wash in phosphate-buffered saline (PBS), cells are fixed for ten minutes at -20°C using prechilled methanol/acetone (7:3). Plates are allowed to air dry before being rehydrated with PBS and blocked for 30 minutes at room temperature using 5% nonfat dry milk in PBS-Tween (0.05%) as the blocking solution. Goat antimouse fluorescein 5(6)-isothiocyanate (FITC)-coupled antibody (1:50) and 1 μg/mL 40,6-diamidino-2-phenylindole (DAPI) are then added to the blocking solution and the cells are incubated for 60 minutes at room temperature. After washing the cells five times with PBS-Tween20, the cells are again incubated for 60 minutes with anti-PAR antibody 10H (1:50) in blocking solution. Following five PBS-Tween20 washes, the analysis is carried out using an fmax Fluorescence Microplate Reader that is configured to read at either the FITC or DAPI excitation and emission wavelengths. Cell numbers are used to normalize PARP activity (FITC signal) using DAPI.
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| References |
| Molecular Formula |
C18H17FN4O
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| Molecular Weight |
324.35
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| Exact Mass |
324.14
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| Elemental Analysis |
C, 66.65; H, 5.28; F, 5.86; N, 17.27; O, 4.93
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| CAS # |
934162-61-5
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| Appearance |
White solid powder
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| SMILES |
C1C[C@H](NC1)C2=CC(=C(C=C2)C3=NC4=C(C=CC=C4N3)C(=O)N)F
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| InChi Key |
AHIVQGOUBLVTCB-AWEZNQCLSA-N
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| InChi Code |
InChI=1S/C18H17FN4O/c19-13-9-10(14-5-2-8-21-14)6-7-11(13)18-22-15-4-1-3-12(17(20)24)16(15)23-18/h1,3-4,6-7,9,14,21H,2,5,8H2,(H2,20,24)(H,22,23)/t14-/m0/s1
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| Chemical Name |
2-[2-fluoro-4-[(2S)-pyrrolidin-2-yl]phenyl]-1H-benzimidazole-4-carboxamide
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| Synonyms |
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| HS Tariff Code |
2934.99.9001
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| Storage |
Powder -20°C 3 years 4°C 2 years In solvent -80°C 6 months -20°C 1 month |
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| Shipping Condition |
Room temperature (This product is stable at ambient temperature for a few days during ordinary shipping and time spent in Customs)
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| Solubility (In Vitro) |
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| Preparing Stock Solutions | 1 mg | 5 mg | 10 mg | |
| 1 mM | 3.0831 mL | 15.4154 mL | 30.8309 mL | |
| 5 mM | 0.6166 mL | 3.0831 mL | 6.1662 mL | |
| 10 mM | 0.3083 mL | 1.5415 mL | 3.0831 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.
Calculation results
Working concentration： mg/mL；
Method for preparing DMSO stock solution： mg drug pre-dissolved in μL DMSO (stock solution concentration mg/mL). Please contact us first if the concentration exceeds the DMSO solubility of the batch of drug.
Method for preparing in vivo formulation:：Take μL DMSO stock solution, next add μL PEG300, mix and clarify, next addμL Tween 80, mix and clarify, next add μL ddH2O，mix and clarify.
(1) Please be sure that the solution is clear before the addition of next solvent. Dissolution methods like vortex, ultrasound or warming and heat may be used to aid dissolving.
(2) Be sure to add the solvent(s) in order.
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