圆弧偶氮酸（CPA）是由多种 曲霉 和 青霉菌 种合成的tetramic酸。 应用 圆弧青霉菌来源圆弧偶氮酸用于： 作为标准品，用于薄层色谱法（TLC）检测和定量黄曲霉毒素。 作为培养基成分，用于不含Ca2+的DMEM（含10％胎牛血清（FBS））。 作为肌质网/内质网Ca2+ -ATP酶的可逆抑制剂，检测腔内钙在内质网（ER）-至-高尔基体转运过程中的作用。 作为内质网Ca2+-ATP酶的阻滞剂，处理神经元；研究内质网（ER）在Ca2+诱导的Ca2+ 释放（CICR）抑制 SERCA 过程中，对释放和维持Ca2+ 的影响。 Cyclopiazonic acid (CPA), a tetramic acid is synthesized by various Aspergillus and Penicillium species. Product Application Cyclopiazonic acid from Penicillium cyclopium has been used: as a standard in aflatoxin detection and quantification by thin layer chromatography (TLC) as a component in Ca2+-free DMEM/10% fetal bovine serum (FBS) as a reversible inhibitor of the sarco/endoplasmic reticulum Ca2+-ATPase (SERCA) to examine the role of luminal calcium in endoplasmic recticulum (ER)-to-Golgi trafficking as an endoplasmic reticulum Ca2+-ATPase blocker, to treat neurons and also to study the role of the endoplasmic reticulum (ER) in releasing and sustaining Ca2+ during Ca2+-induced Ca2+ release (CICR) to inhibit SERCA