nicotinic acid amide-d4

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.

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。

Nicotinamide ascorbate is a bioactive chemical.

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。