Talazoparib tosylate - CAS# 1373431-65-2

Talazoparib tosylate (BMN 673ts) is a novel, potent and orally available PARP1/2 inhibitor with an IC50 of 0.57 nM for PARP1.

Product information

CAS Number: 1373431-65-2

Molecular Weight: 552.55

Formula: C26H22F2N6O4S

Chemical Name: (8S, 9R)-5-fluoro-8-(4-fluorophenyl)-9-(1-methyl-1H-1, 2, 4-triazol-5-yl)-2, 7, 8, 9-tetrahydro-3H-pyrido[4, 3, 2-de]phthalazin-3-one 4-methylbenzenesulfonate

Smiles: CC1C=CC(=CC=1)S(O)(=O)=O.CN1N=CN=C1[C@@H]1[C@H](NC2=CC(F)=CC3C(=O)NN=C1C=32)C1C=CC(F)=CC=1

InChiKey: QUQKKHBYEFLEHK-QNBGGDODSA-N

InChi: InChI=1S/C19H14F2N6O.C7H8O3S/c1-27-18(22-8-23-27)15-16(9-2-4-10(20)5-3-9)24-13-7-11(21)6-12-14(13)17(15)25-26-19(12)28;1-6-2-4-7(5-3-6)11(8,9)10/h2-8,15-16,24H,1H3,(H,26,28);2-5H,1H3,(H,8,9,10)/t15-,16-;/m1./s1

Technical Data

Appearance: Solid Power

Purity: ≥98% (or refer to the Certificate of Analysis)

Solubility: DMSO : ≥ 108 mg/mL (195.46 mM).

Shipping Condition: Shipped under ambient temperature as non-hazardous chemical or refer to Certificate of Analysis

Storage Condition: Dry, dark and -20 ^oC for 1 year or refer to the Certificate of Analysis.

Shelf Life: ≥12 months if stored properly.

Stock Solution Storage: 0 - 4 ^oC for 1 month or refer to the Certificate of Analysis.

Drug Formulation: To be determined

HS Tariff Code: 382200

How to use

In Vitro:

Talazoparib is a potent PARP1/2 inhibitor (PARP1 IC50=0.57 nM), it has no effect on PARG activity at concentrations up to 1 μM. Talazoparib binds to PARP1 with a dissociation constant (KD) of 0.29 nM. Talazoparib inhibits PARP1 and -2 to a similar extent, with Kis of 1.20 and 0.85 nM, respectively. Talazoparib selectively targets tumor cells with BRCA1, BRCA2, or PTEN gene defects with 20- to more than 200-fold greater potency than existing PARP1/2 inhibitors. Talazoparib targets tumor cells with homologous recombination gene defects. Tumor models that are either BRCA1-deficient (MX-1 and SUM149) or BRCA2-deficient (Capan-1) are profoundly sensitive to Talazoparib. Talazoparib induces nuclear γ-H2AX foci at concentrations as low as 100 pM.

In Vivo:

Talazoparib is readily orally bioavailable, with more than 40% absolute oral bioavailability in rats when dosed in carboxylmethyl cellulose. Oral administration of Talazoparib elicits remarkable antitumor activity; xenografted tumors that carry defects in DNA repair due to BRCA mutations or PTEN deficiency are profoundly sensitive to oral Talazoparib treatment at well-tolerated doses in mice. Synergistic or additive antitumor effects are also found when Talazoparib is combined with temozolomide, SN38, or platinum drugs.

Products are for research use only. Not for human use.