BI-7273 is a selective, and cell-permeable BRD9 inhibitor, with an IC₅₀ and a K_d of 19 and 0.75 nM; also shows high effect on BRD7, with an IC₅₀ and a K_d of 117 nM and 0.3 nM.

IC50: 19 nM (BRD9), 117 nM (BRD7)^[1]
Kd: 0.75 nM (BRD9), 0.3 nM (BRD7)^[1]

BI-7273 is a selective, and cell-permeable BRD9 inhibitor, with an IC₅₀ and a K_d of 19 and 0.75 nM; also shows high effect on BRD7, with an IC₅₀ and a K_d of 117 nM and 0.3 nM. BI-7273 also has slight activity against a panel of kinases such as CECR2, BRPF1, BRD1, CREBBP, EP300, FALZ, TAF1(2) and TAF1L(2), with K_ds of 8.8 nM, 210 nM, 2600 nM, 8600 nM, 10000 nM, 850 nM, 1000 nM, and 1200 nM, respectively. BI-7273 (1 μM) is active in U2OS cell lines. BI-7273 blocks EOL-1 cell proliferation with EC₅₀ of 1400 nM^[1].

上海金畔生物科技有限公司 has not independently confirmed the accuracy of these methods. They are for reference only.

353.41

C₂₀H₂₃N₃O₃

1883429-21-7

Room temperature in continental US; may vary elsewhere.

Powder	-20°C	3 years
	4°C	2 years
In solvent	-80°C	6 months
	-20°C	1 month

In Vitro: 

DMSO : 10 mg/mL (28.30 mM; Need ultrasonic)

*

请根据产品在不同溶剂中的溶解度选择合适的溶剂配制储备液；一旦配成溶液，请分装保存，避免反复冻融造成的产品失效。
储备液的保存方式和期限：-80°C, 6 months; -20°C, 1 month。-80°C 储存时，请在 6 个月内使用，-20°C 储存时，请在 1 个月内使用。

In Vivo:

请根据您的实验动物和给药方式选择适当的溶解方案。以下溶解方案都请先按照 In Vitro 方式配制澄清的储备液，再依次添加助溶剂：

——为保证实验结果的可靠性，澄清的储备液可以根据储存条件，适当保存；体内实验的工作液，建议您现用现配，当天使用； 以下溶剂前显示的百
分比是指该溶剂在您配制终溶液中的体积占比；如在配制过程中出现沉淀、析出现象，可以通过加热和/或超声的方式助溶

• 1.

  请依序添加每种溶剂： 10% DMSO    40% PEG300    5% Tween-80    45% saline

  Solubility: ≥ 1 mg/mL (2.83 mM); Clear solution

  此方案可获得 ≥ 1 mg/mL (2.83 mM，饱和度未知) 的澄清溶液。

  以 1 mL 工作液为例，取 100 μL 10.0 mg/mL 的澄清 DMSO 储备液加到 400 μL PEG300 中，混合均匀；向上述体系中加入50 μL Tween-80，混合均匀；然后继续加入 450 μL生理盐水定容至 1 mL。

  将 0.9 g 氯化钠，完全溶解于 100 mL ddH₂O 中，得到澄清透明的生理盐水溶液

• 2.

  请依序添加每种溶剂： 10% DMSO    90% (20% SBE-β-CD in saline)

  Solubility: 1 mg/mL (2.83 mM); Suspended solution; Need ultrasonic

  此方案可获得 1 mg/mL (2.83 mM) 的均匀悬浊液，悬浊液可用于口服和腹腔注射。

  以 1 mL 工作液为例，取 100 μL 10.0 mg/mL 的澄清 DMSO 储备液加到 900 μL 20% 的 SBE-β-CD 生理盐水水溶液中，混合均匀。

  将 2 g 磺丁基醚 β-环糊精加入 5 mL 生理盐水中，再用生理盐水定容至 10 mL，完全溶解，澄清透明
• 3.

  请依序添加每种溶剂： 10% DMSO    90% corn oil

  Solubility: ≥ 1 mg/mL (2.83 mM); Clear solution

  此方案可获得 ≥ 1 mg/mL (2.83 mM，饱和度未知) 的澄清溶液，此方案不适用于实验周期在半个月以上的实验。

  以 1 mL 工作液为例，取 100 μL 10.0 mg/mL 的澄清 DMSO 储备液加到 900 μL玉米油中，混合均匀。

• [1]. Martin LJ, et al. Structure-Based Design of an in Vivo Active Selective BRD9 Inhibitor. J Med Chem. 2016 May 26;59(10):4462-75.

His-tagged BRD9 is immobilized to a density of 2000-4000 RUs on flow cells 3 and 4 of a Biacore NTA-chip. Carbonic anhydrase II is immobilized at a similar density on flow cell 2 and a blank reference surface is generated on flow cell 1. The buffer is then switched to assay buffer (HBS-P+ = 10 mM HEPES, pH 7.4, 150 mM NaCl, 0.05 % P20 + 5 % DMSO) and the chip equilibrated for several hours before use for K_d determinations. To be able to correct for differences in bulk solvent refractive index caused by small variations in the DMSO concentration solvent correction samples are included at the beginning and end of the run. Compounds (BI-7273, etc.) are injected in concentration series (1:1 dilutions, 7 different concentrations), starting with a maximum concentration that is approximately 10-20-fold higher than the expected K_d. The concentration series are prepared in 96-well plates. In the case that the dilution window chosen for a particular compound does not appropriately bracket the K_d of the compound the measurement is repeated with an optimized starting concentration. Positive and negative control samples are included at regular intervals to be able to monitor the performance of the assay. CBS is used as a positive control for carbonic anhydrase II to check for integrity of the reference protein at regular intervals. To correct for the excluded volume effect a DMSO calibration series is prepared and the calibration samples are measured at the beginning and end of each run. K_d values are determined and averaged^[1].

上海金畔生物科技有限公司 has not independently confirmed the accuracy of these methods. They are for reference only.

Cells are grown in 50 µL medium for 7 days starting with 500 and with 1000 cells per well of a 384 well plate in the presence of varying concentrations of compound (BI-7273, etc.) before measuring viability via cellular ATP levels using the cell titer glow assay^[1].

上海金畔生物科技有限公司 has not independently confirmed the accuracy of these methods. They are for reference only.

• [1]. Martin LJ, et al. Structure-Based Design of an in Vivo Active Selective BRD9 Inhibitor. J Med Chem. 2016 May 26;59(10):4462-75.