(R)-3-(2,4-Dihydroxy-3,3-dimethylbutanamido)propanoic acid is a key intermediate in the industrial synthesis of D-pantothenic acid (vitamin B5) and its derivatives, such as calcium D-pantothenate and D-panthenol. Its structure features a chiral center derived from D-pantolactone, which is essential for the biological activity of the final vitamin products. The primary application of this compound is in the pharmaceutical and nutraceutical industries for the production of vitamin B5. Vitamin B5 is a vital component of coenzyme A (CoA) and acyl carrier protein, playing a crucial role in cellular energy metabolism and the synthesis of fatty acids, cholesterol, and acetylcholine. Furthermore, D-panthenol, synthesized from this intermediate, is widely used as a moisturizing and skin-conditioning agent in topical pharmaceutical formulations and cosmetic products, functioning as a functional excipient. This chiral intermediate is produced via enzymatic or chemical resolution processes to ensure high enantiomeric purity. Its synthesis and use are critical for manufacturing high-quality, biologically active forms of pantothenate, which are essential for animal feed, human dietary supplements, and various dermatological preparations.