891494-63-6
中文名称
6-溴-3-(1-甲基-1H-吡唑-4-基)-5-(3R)-3-哌啶基吡唑并[1,5-A]嘧啶-7-胺
英文名称
SCH900776
CAS
891494-63-6
分子式
C15H18BrN7
分子量
376.254
MOL 文件
891494-63-6.mol
更新日期
2023/03/20 15:41:23
891494-63-6 结构式
基本信息
中文别名
化合物MK-8776SCH900776(S型)
SCH900776(R型)
6-溴-3-(1-甲基-1H-吡唑-4-基)-5-(3R)-3-哌啶基吡唑并[1,5-A]嘧啶-7-胺
英文别名
SCH900776(R)SCH 900776, >=98%
SCH900776 USP/EP/BP
SCH 900776 (MK-8776)
MK-8776 (SCH 900776)
MK-8776 (SCH900776)(S)
SCH-900776
SCH 900776
MK-8776.
6-Bromo-3-(1-methyl-1H-pyrazol-4-yl)-5-(3R)-3-piperidinylpyrazolo[1,5-a]pyrimidin-7-amine
(R)-6-Bromo-3-(1-methyl-1H-pyrazol-4-yl)-5-(piperidin-3-yl)pyrazolo[1,5-a]pyrimidin-7-amine
6-bromo-3-(1-methyl-1H-pyrazol-4-yl)-5-((R)-piperidin-3-yl)pyrazolo[1,5-a]pyrimidin-7-amine
所属类别
生物化工：Chk 抑制剂物理化学性质
密度1.80
储存条件-20°C储存
溶解度insoluble in H2O; insoluble in EtOH; ≥18.8 mg/mL in DMSO
酸度系数(pKa)8.88±0.10(Predicted)
形态结晶固体
常见问题列表
生物活性
MK-8776 (SCH 900776)是一种选择性Chk1抑制剂，IC50为3 nM，比作用于Chk2选择性高50倍。Phase 2。体外研究
SCH 900776 is not a potent inhibitor of Chk2 and CDK2 with IC50 of 1.5 μM and 0.16 μM, respectively. SCH 900776 shows no significant inhibition of cytochrome P450 human liver microsomal isoforms 1A2, 2C9, 2C19, 2D6, and 3A4. SCH 900776 induces a dose-dependent loss of DNA replication capability 24 hours after hydroxyurea exposure. SCH 900776 enhances the γ-H2AX response of hydroxyurea, 5-fluoruracil, and cytarabine. In combination with an antimetabolite, SCH 900776 induces accumulation of γ-H2AX within 2 hours, indicative of replication fork collapse and double stranded DNA breaks. Additionally, SCH 900776 suppresses accumulation of the Chk1 pS296 autophosphorylation in a dose-dependent manner. Exposure of proliferating WS1 cells to SCH 900776 is associated with rapid, dose-dependent accumulation of Chk1 pS345, indicating that cycling populations of normal cells induce Chk1 pS345 following exposure to SCH 900776 as part of a futile cycle, perhaps driven by AT-family kinases and DNA-PK.体内研究
Administered 30 minutes after gemcitabine, 4 mg/kg SCH 900776 is sufficient to induce the γ-H2AX biomarker while 8 mg/kg leads to enhanced tumor pharmacodynamic and regression responses relative to gemcitabine or SCH 900776 alone. Dose escalation of SCH 900776 (16 mg/kg and 32 mg/kg) induces incremental improvements in tumor response. Importantly, doses of SCH 900776 associate with robust biomarker activation and improved tumor response are not associated with enhanced toxicity of gemcitabine on hematological parameters in BALB/c mice.生物活性
MK-8776 (SCH 900776)是一种选择性Chk1抑制剂，无细胞试验中IC50为3 nM，比作用于Chk2选择性高500倍。Phase 2。靶点
| Target | Value |
|
Chk1
(Cell-free assay) | 3 nM |
|
CDK2
(Cell-free assay) | 0.16 μM |
体外研究
SCH 900776是Chk2和CDK2的低效抑制剂，IC50分别为1.5 μM 和 0.16 μM。SCH 900776对细胞色素P450人肝微粒体亚型1A2，2C9，2C19，2D6，和3A4没有显著的抑制作用。羟基脲下暴露24小时后，SCH 900776诱导DNA复制能力剂量依赖性损失。SCH 900776增强γ-H2AX对羟基脲，5-氟尿嘧啶，和阿糖孢苷的响应。与抗代谢物结合，SCH 900776在2小时内诱导γ-H2AX的累积，表明复制叉瓦解，并且双链DNA断裂。此外，SCH 900776以剂量依赖的方式抑制Chk1 pS296自磷酸化的积累。增殖的WS1细胞暴露于SCH 900776，与Chk1 pS345快速的，剂量依赖性聚集相关，表明正常细胞的循环群诱导Chk1 pS345在暴露于SCH 900776后，是一部分无效循环，这也许通过AT-家族激酶和DNA-PK驱动。
体内研究
相对于gemcitabine或SCH 900776单独给药，Gemcitabine给药30分钟后，4 mg/kg SCH 900776足以诱导γ-H2AX生物标志物，而8 mg/kg增强肿瘤药效动力学和退化响应。递增剂量的SCH 900776 (16 mg/kg和32 mg/kg)诱导肿瘤响应持续改进。重要的是，在BALB/c 小鼠体内，SCH 900776的剂量与强的生物标志物活化相关，而提高的肿瘤响应与gemcitabine对血液学指标增强的毒性无关。6-溴-3-(1-甲基-1H-吡唑-4-基)-5-(3R)-3-哌啶基吡唑并[1,5-A]嘧啶-7-胺价格(试剂级)
| 报价日期 | 产品编号 | 产品名称 | CAS号 | 包装 | 价格 |
| 2024/01/16 | S2735 | 6-溴-3-(1-甲基-1H-吡唑-4-基)-5-(3R)-3-哌啶基吡唑并[1,5-A]嘧啶-7-胺 MK-8776 (SCH 900776) | 891494-63-6 | 5mg | 1733.35元 |
| 2024/01/16 | S2735 | 6-溴-3-(1-甲基-1H-吡唑-4-基)-5-(3R)-3-哌啶基吡唑并[1,5-A]嘧啶-7-胺 MK-8776 (SCH 900776) | 891494-63-6 | 10mM(1mL in DMSO) | 1921.21元 |
| 2024/01/16 | S2735 | 6-溴-3-(1-甲基-1H-吡唑-4-基)-5-(3R)-3-哌啶基吡唑并[1,5-A]嘧啶-7-胺 MK-8776 (SCH 900776) | 891494-63-6 | 10mg | 3015.42元 |