RHC 80267 (U-57908) 是一种有效的选择性二酰基甘油脂酶 (DAGL) 抑制剂 (对犬血小板的 IC₅₀ 为 4 μM)。RHC 80267 抑制胆碱酯酶活性，IC₅₀ 为 4 μM，从而增强了乙酰胆碱引起的松弛。RHC 80267 还抑制 COX 活性和磷脂酰胆碱的水解。

RHC 80267 (U-57908) is a potent and selective inhibitor of diacylglycerol lipase (DAGL) (with IC 50 of 4 μM in canine platelets). RHC-80267 inhibits cholinesterase activity with an IC 50 of 4 μM, thereby enhancing the relaxation evoked by acetylcholine. RHC 80267 also inhibits COX and the hydrolysis of phosphatidylcholine (PC).

Solid

IC50: 4 μM (Canine diacylglycerol lipase), 4 μM (Cholinesterase);
COX;
Phosphatidylcholine

The potentiation by RHC 80267 of the relaxation to acetylcholine could be caused by the inhibition of cholinesterase: (1) RHC 80267 does not affect the responses to carbachol, the carbamyl derivative of acetylcholine which only differs from acetylcholine by its resistance to hydrolysis by cholinesterase, and (2) the effect of RHC 80267 is mimicked by the inhibitor of cholinesterase neostigmine, RHC 80267 showing no additional effect in the presence of a maximally effective concentration of neostigmine. The determination of the effect of RHC 80267 on the cholinesterase activity of brain homogenate confirmed that RHC 80267 inhibits this enzyme in the same range of concentrations increasing the relaxation to acetylcholine, namely at 1-10 μM. has not independently confirmed the accuracy of these methods. They are for refere

RHC 80267 (40 μM) enhances contractions induced by U46619 (a thromboxane A2 analog) in human and rat pulmonary arteries (hPAs and rPAs, respectively) and by angiotensin II (ANG II) in rPAs in an endothelium-dependent manner. has not independently confirmed the accuracy of these methods. They are for reference only.

Room temperature in continental US; may vary elsewhere.

Powder -20°C 3 years；4°C 2 years

[1]. Sutherland CA, et al. Relative activities of rat and dog platelet phospholipase A2 and diglyceride lipase. Selective inhibition of diglyceride lipase by RHC 80267. J Biol Chem. 1982 Dec 10;257(23):14006-10.
[2]. Ghisdal P, et al. The diacylglycerol lipase inhibitor RHC-80267 potentiates the relaxation to acetylcholine in rat mesenteric artery by anti-cholinesterase action. Eur J Pharmacol. 2005 Jul 4;517(1-2):97-102.

In Vitro: DMSO : 25 mg/mL (63.37 mM; Need ultrasonic)配制储备液