niacin

Nicotinamide riboside 是维生素 B3 的来源，可以增强氧化代谢并防止高脂肪饮食诱导的代谢异常。它是具有口服活性的 NAD+的前体，增加 NAD+水平并激活SIRT1和SIRT3，可用于研究阿尔茨海默氏病的认知退化。

Nicotinamide riboside Chloride 是维生素 B3 的来源，可以增强氧化代谢并防止高脂肪饮食诱导的代谢异常。它是具有口服活性的 NAD+的前体，增加 NAD+水平并激活SIRT1和SIRT3，可用于研究阿尔茨海默氏病的认知退化。

Niacin (Nicotinic acid)，也称为烟酸和维生素 B3，是一种水溶性必需的 B 族维生素，用于治疗维生素缺乏症以及高脂血症，血脂异常，高甘油三酯血症，并降低心肌梗塞的风险

Niacin hydrochloride is a water-soluble vitamin of the B complex occurring in various animal and plant tissues. It is needed by the body for the formation of coenzymes NAD and NADP. It possesses PELLAGRA-curative, vasodilating, and antilipemic properties.

Nicotinamide 是维生素 B3 的吡啶核苷形式，可作为烟酰胺腺嘌呤二核苷酸或 NAD+ 的前体，可通过膳食摄入来补充，能预防或治疗黑舌病和糙皮病。

Usnic Acid (Usniacin) 是地衣次生代谢产物，具有独特的二苯并呋喃骨架。它是一种抗菌剂、抗肿瘤剂和酶抑制剂。

(+)-Usnic acid (D-Usnic Acid) 是地衣中的二苯并呋喃衍生物，可结合 mTOR 的 ATP 结合口袋，抑制 mTORC1 2的活性。它诱导自噬，有抗菌和抗肿瘤活性。

Nicotinamide Hydrochloride 是维生素 B3 或烟酸的一种形式，可抑制SIRT2的体外活性，其EC50值为 2 μM。 Nicotinamide Hydrochloride 可抑制 90% 的黑色素瘤细胞数量，并增加细胞内 NAD+、ATP、ROS 水平。Nicotinamide Hydrochloride 抑制黑色素瘤小鼠的肿瘤生长并提高生存率，可用于黑色素瘤等皮肤癌相关的研究。

L-Tryptophan (Tryptophane) 是一种必需氨基酸，是褪黑素、血清素和维生素B3的前体。

Acipimox (K-9321) 是烟酸类似物，能够急性抑制脂解作用，抑制全身游离脂肪水平，改善胰岛素敏感性。

TRIA-662 (Nicotinamide Chloromethylate) 是内源性代谢产物的一种。

3-Pyridylacetic acid hydrochloride （3-PAA-HCl）尼克酸的高同系物，是尼古丁（和其它烟草生物碱）的分解产物，还可与胺、醇和羧酸等反应，也可在反应中作为酸催化剂。

Nicodan Percutan (Propylnicotinat) 是烟酸的丙酯形式，烟酸在各种动物和植物组织中存在，用于形成辅酶NAD 和NADP。

Nicodicosapent is a fatty acid niacin conjugate. It is also an inhibitor of the sterol regulatory element-binding protein (SREBP). The sterol regulatory element-binding protein (SREBP) is a key regulator of cholesterol metabolism proteins such as PCSK9, H

IBC 293 对 GPR109B 的选择性高于烟酸受体 GPR109A。 IBC 293 是 GPR109B 的高选择性激动剂，GPR109B 是一种在脂肪细胞中表达的人类孤儿 G 蛋白偶联受体。

Niceritrol (Cardiolipol) 是一种烟酸酯，可降低总血浆以及 VLD 和 LD 脂蛋白部分中的胆固醇和甘油三酯。

Nicomol is a niacin derivative. It also has antilipidemic activity.

Etofibrate 是烟酸和氯贝酸的醚二醇-1,2 二酯。它是动物和人类中一种有效的降血脂剂。

2-Amino-4-(2-aminophenyl)-4-oxobutanoic acid 是一种酮类和氨基酸衍生物，具有多种生物功能，包括血管舒张、免疫调节和神经调节活性。2-Amino-4-(2-aminophenyl)-4-oxobutanoic acid 是烟酸的前体。2-Amino-4-(2-aminophenyl)-4-oxobutanoic acid 的异常产生与神经系统疾病相关的认知缺陷和抑郁症状有关。2-Amino-4-(2-aminophenyl)-4-oxobutanoic acid 在某些类型的癌细胞中过度表达，可能被用作评估癌症风险的生物标志物。

Methylmalonyl coenzyme A (methylmalonyl-CoA) is an intermediate in multiple metabolic pathways in bacteria and eukaryotes.1,2,3It is an intermediate in carbon assimilation in certain bacteria and carbon fixation in plants.1,2Methylmalonyl-CoA is converted to succinyl-CoA by methylmalonyl-CoA mutase with vitamin B12as a coenzyme.3A deficiency in vitamin B12leads to a build-up of methylmalonyl-CoA.4 1.Anthony, C.How half a century of research was required to understand bacterial growth on C1 and C2 compounds; the story of the serine cycle and the ethylmalonyl-CoA pathwaySci. Prog.94(Pt 2)109-137(2011) 2.Tabita, F.R.The hydroxypropionate pathway of CO2 fixation: Fait accompliProc. Natl. Acad. Sci. U.S.A.106(50)21015-21016(2009) 3.Medicine, I.o.Vitamin B12Dietary reference intakes for thiamin, riboflavin, niacin, vitamin B6, folate, vitamin B12, pantothenic acid, biotin, and choline306-356(1998) 4.Cardinale, G.J., Carty, T.J., and Abeles, R.H.Effect of methylmalonyl coenzyme A, a metabolite which accumulates in vitamin B12 deficiency, on fatty acid synthesisJ. Biol. Chem.245(15)3771-3775(1970)

Nicotinamide riboside tartrate (NRT) is an oral NAD+ precursor that raises NAD+ levels, activates SIRT1 and SIRT3, and serves as a vitamin B3 (niacin) source. NRT also improves oxidative metabolism and protects against metabolic abnormalities induced by a high-fat diet. Furthermore, NRT mitigates cognitive decline in a transgenic mouse model of Alzheimer's disease.

Nicotinamide riboside malate is an orally active NAD+ precursor that elevates NAD+ levels and stimulates the activity of SIRT1 and SIRT3. Functioning as a vitamin B3 (niacin) source, it augments oxidative metabolism and provides protection against metabolic abnormalities induced by a high-fat diet. Additionally, Nicotinamide riboside malate mitigates cognitive decline in a genetically modified mouse model of Alzheimer's disease.

Nicotinamide-d4 is intended for use as an internal standard for the quantification of nicotinamide by GC- or LC-MS. Nicotinamide is an amide form of niacin, which is also known as vitamin B3, that can be biosynthesized in vivo or obtained through the diet. It is a precursor in the synthesis of the metabolic cofactor NAD+ and an inhibitor of sirtuin 1 (SIRT1; IC50 = <50 µM). Nicotinamide (10 µM) increases the activity of serine palmitoyltransferase (SPT) and the biosynthesis of ceramide, glucosylceramide, sphingomyelin, free fatty acids, and cholesterol in primary human keratinocytes. Nicotinamide (40 µM) induces apoptosis in SNU-398, SNU-739, and HepG2 hepatocellular carcinoma (HCC) cells, and it prevents the formation of neoplastic lesions in a diethylnitrosamine-induced mouse model of HCC. Unlike niacin, nicotinamide does not reduce plasma lipid levels or induce flushing.

Vitamin B3-d4 (Nicotinic acid-(ring-d4)) 是 Niacin 的氘代物，可用于跟踪 Niacin 在体内的代谢。