2-Phenylacetamide是一个片段分子，CAS号为103-81-1，可作为分子拼接、扩展和修饰的重要骨架，为新型候选药物的设计与筛选提供结构基础与研究工具，常用于药物发现、药物合成等相关研究。

5-Hydroxyindole-3-acetic acid-D5是一种氘代标记的5-Hydroxyindole-3-acetic acid。5-Hydroxyindole-3-acetic acid是血清素或变肾上腺素的主要代谢产物，常用于作为神经内分泌肿瘤的生物标志物。

ATP dipotassium (Adenosine 5'-triphosphate dipotassium) is a vital compound involved in energy storage and metabolism within living organisms. It plays a crucial role in supplying metabolic energy for driving pumps and acts as a coenzyme in cellular processes. Additionally, ATP dipotassium functions as a significant endogenous signaling molecule contributing to immunity and inflammation.

Cyclohexanoyl coenzyme A (CHCoA) is an acyl CoA that contains a cyclohexane group. It is the activated form of cyclohexane carboxylic acid (CHC) in R. palustris. CHC is converted to CHCoA by a succinyl-CoA CHC CoA transferase, and CHCoA is then degraded by a dehydrogenase. CHCoA is converted to hippuric acid in submitochondrial fractions isolated from guinea pig liver.

NADP+ is the oxidized form of the electron donor nicotinamide adenine dinucleotide phosphate . It serves as a cofactor in various biological reactions. In addition, the balance between these reduced and oxidized forms plays key roles in diverse cellular functions, including cell survival, the maintenance of redox status, and intracellular signaling. For example, binding of NADP+ to β-subunits of Kv channels activates ion transport, whereas NADPH stabilizes channel inactivation. NADP+ is biosynthesized from NAD+ by NAD kinase, with ATP as the phosphoryl donor.

Palmitoyl L-Carnitine-d3 Hydrochloride是棕榈酰 L-肉碱的氘代衍生物。棕榈酰 L-肉碱是一种长链酰基肉碱，由棕榈酸和肉碱缩合而成，在线粒体脂肪酸 β-氧化和能量代谢中起关键作用。在病理状态下（如心肌缺血），棕榈酰 L-肉碱会在细胞膜内积聚。研究表明，它能改变膜脂环境并调节 KATP 通路，从而影响心肌细胞的电生理特性。作为氘代标记物，该化合物主要在基于质谱（LC-MS/MS）的定量分析中用作内标，利用氘代诱导的药代动力学动力学同位素效应（KIE）来提高检测的精确度。

L-Leucine-D3是L-Leucine (T3O2749)的氘代化合物。L-Leucine的CAS号为61-90-5。L-Leucine是必需的支链氨基酸，能够激活mTOR信号通路。

Methylmalonyl coenzyme A (Methylmalonyl-CoA) 是单链脂肪酸、胆固醇以及某些氨基酸（例如缬氨酸、异亮氨酸、蛋氨酸、苏氨酸）分解后的产物。通过甲基丙二酸单酰辅酶 A 变位酶 (MCM) 和其辅酶维生素 B12，Methylmalonyl coenzyme A 可以被催化转化为琥珀酰辅酶 A。

L-Methionine-D8是L-Methionine (T4844)的氘代物。L-Methionine是必需氨基酸 Methionine 的 L-异构体，具有强肝解毒作用，并作为肝脏保护剂。