The group IVA phospholipase A2 (PLA2), known as calcium-dependent cytosolic PLA2 (cPLA2), selectively releases arachidonic acid (AA) from membrane phospholipids, playing a central role in initiating the synthesis of prostaglandins (PGs) and leukotrienes (LTs). Pyrrophenone inhibits cPLA2α with an IC50 of 4.2 nM in enzyme assays and potently blocks the release of AA and the production of PGE2 and LTC4 in cells (IC50 = 24, 25, and 14 nM, respectively). Its action is reversible and selective, as pyrrophenone inhibits the secretory type IB and IIA PLA2s with more than a hundred-fold less potency. Pyrrophenone has also been shown to inhibit calcium ionophore (A23187)-stimulated AA release from monocytic cells, interleukin-1-induced PGE2 synthesis in mesangial cells, and the production of PGE2, LTs, and platelet-activating factor by human neutrophils, always with maximal inhibition at concentrations below 1 μM.

ASM-IN-1是一种高效的口服活性ASM抑制剂，具有1.5 µM的IC50值。该化合物在减少主动脉弓及主动脉的脂质斑块方面表现出效果，并能够降低血浆中的神经酰胺以及Ox-LDL水平。ASM-IN-1展现了抗动脉粥样硬化与抗炎的活性。

SB-435495 ditartrate，一种口服有效的Lp-PLA2抑制剂，特点为高效、选择性、可逆且非共价，IC50值为0.06 nM。

PhospholipaseD (PLD) ，即磷脂酶 D，是磷脂酶超家族的一种酶，广泛存在于细菌、酵母、植物、动物和病毒中，常用于生化研究。PhospholipaseD 可以催化甘油磷脂的磷酸二酯键水解，产生磷脂酸和可溶性胆碱。PhospholipaseD 参与了多种疾病相关过程，包括糖尿病、动脉粥样硬化形成、肥胖、肿瘤发生、免疫反应和神经内分泌功能。

SPK-601 is an inhibitor of phosphatidylcholine-specific phospholipase C.

MJ33-OH lithium (carbonate 2,2',3,4,4',6-hexachlorobiphenyl) is a metabolite of MJ33.

Ochnaflavone 是一种天然产物，可用于生命科学领域的相关研究。其产品编号为 TN5501，CAS号为 50276-96-5。

Efipladib is a phospholipase inhibitor. Efipladib decreases nociceptive responses without affecting PGE2 levels in the cerebral spinal fluid.

Varespladib sodium是一种高效且选择性的secretory phospholipase A2抑制剂，对group IIA sPLA2的IC50约为9 nM，在大鼠，兔，豚鼠和人等各种物种血清中均表现出纳摩尔水平的抑制活性，常用于炎症及脂质代谢相关研究。