(S)-(-)-Bay-K-8644 is an agonist of L-type Ca channel. (S)-(-)-Bay-K-8644 activates Ba currents (IBa) (EC50=32 nM).
体外研究
(±)-Bay K 8644, a conventional racemic mixture of Bay K 8644, is widely used as an L-type Ca channel agonist. Each optical isomer possesses opposite effects on IBa (R(+)-Bay K 8644 as an antagonist and (S)-(-)-Bay-K-8644 as an agonist. (S)-(-)-Bay-K-8644 can prevent the inhibitory actions of two distinct cyclic nucleotide pathways on IBa in gastric myocytes of the guinea pig antrum. The Ca channel activity is enhanced by 3–30 μM (S)-(-)-Bay-K-8644 an agonist of L-type Ca channels. The interactions of two Ca channel activators (S)-(-)-Bay-K-8644 and FPL 64176 is examined on smooth muscle L-type Ca channels. FPL 64176 (300 nM) causes a sustained contraction of rat tail artery strips. This contractile response is inhibited by approximately 70% by (S)-(-)-Bay-K-8644 (EC50=14 nM). (S)-(-)-Bay-K-8644 (100 nM) increases whole-cell Ca currents in A7r5 smooth muscle cells but effectively blocks further stimulation by 1 μM FPL 64176.
分子式
C16H15N2O4F3
分子量
356.30
CAS号
98625-26-4
运输条件
Room temperature in continental US; may vary elsewhere.
储存方式
Powder
-20°C
3 years
4°C
2 years
In solvent
-80°C
6 months
-20°C
1 month
溶解性数据
In Vitro:
DMSO : 125 mg/mL (350.83 mM; Need ultrasonic)
H2O : < 0.1 mg/mL (ultrasonic;warming;heat to 60°C) (insoluble)