99% Purity 2-Bromo-3'-chloropropiophenone CAS 34911-51-8

Procaine Hydrochloride CAS 51-05-8 is the water-soluble hydrochloride salt of procaine. It is the specific formulation used in clinical medicine, famously marketed under the brand name ​Novocain. While its use in mainstream practice has diminished, it remains a historically pivotal drug and is still employed in specific medical and therapeutic contexts.  

L(+)-Choline bitartrate CAS 87-67-2​ is an organic salt compound formed from one molecule of choline (a quaternary ammonium cation and essential nutrient) and one molecule of L(+)-tartaric acid (a natural dicarboxylic acid). It is a specific, enantiomerically pure form of choline salt where the counterion is derived from natural tartaric acid.It is a high-purity, stable, and highly bioavailable source of essential choline, combining the vital nutrient with a natural, food-grade organic acid. It offers a superior balance of safety, solubility, and cost-effectiveness​ for dietary supplementation and food fortification.    

L-Carnitine​ CAS 541-15-1 is a naturally occurring, quaternary ammonium compound biosynthesized from the amino acids lysine and methionine. It is a chiral molecule, with the L-enantiomer being the biologically active form. Structurally, it functions as a carrier molecule for long-chain fatty acids. L-Carnitine is the ​essential biological shuttle​ required for transporting long-chain fatty acids into the mitochondria for energy production. It is a conditionally essential nutrient that optimizes cellular energy metabolism, making it fundamental for muscular, cardiovascular, and metabolic health.  

L-Carnitine-L-tartrate​ CAS 36687-82-8 is a well-defined, crystalline salt formed through the ionic bonding of one molecule of L-carnitine (the biologically active enantiomer) and one molecule of L-tartaric acid (the naturally occurring enantiomer). It is specifically engineered as a superior solid form of carnitine for dietary supplements and functional foods. L-Carnitine-L-tartrate is a ​non-hygroscopic, highly stable salt form of L-carnitine, specifically engineered for superior manufacturing and performance. It delivers the essential metabolic benefits of L-carnitine with added advantages for physical recovery, excelling in solid-dose and powdered supplement formulations where stability and clinical validation are paramount. ​  

Trimethylamine hydrochloride (TMA·HCl)​​ CAS 593-81-7 is the hydrochloride salt of trimethylamine (TMA), a simple tertiary alkylamine. It is a solid, crystalline form of the normally gaseous and foul-smelling trimethylamine, which makes it much more convenient to handle, store, and weigh precisely.Trimethylamine Hydrochloride is the ​safe, stable, and precisely weighable solid equivalent of gaseous trimethylamine (TMA)​. It transforms a hazardous, malodorous gas into a controllable reagent, eliminating the major handling and safety challenges while enabling exact stoichiometry in critical synthetic steps.  

(S)-4-Chloro-3-hydroxybutyronitrile​ CAS 127913-44-4 is a chiral, bifunctional organic molecule serving as a versatile building block in asymmetric synthesis. It features a nitrile group, a secondary alcohol with defined (S)-stereochemistry, and a terminal chloro substituent, allowing for multiple divergent chemical transformations from a single, enantiomerically pure scaffold.(S)-4-Chloro-3-hydroxybutyronitrile is a ​privileged, enantiomerically pure chiral building block​ that provides a compact, multifunctional scaffold with three differentiable reaction sites. Its core value lies in enabling the efficient, stereocontrolled synthesis of complex chiral molecules, particularly pharmacologically active intermediates, with high atom economy and strategic flexibility.  

Ethyl (S)-4-chloro-3-hydroxybutyrate​ CAS 86728-85-0 is a chiral, bifunctional ester and a highly valuable building block in asymmetric synthesis. It features a terminal chloro group, a secondary alcohol with defined (S)-stereochemistry, and an ethyl ester, providing three distinct reactive handles for chemical transformation from a single enantiomerically pure scaffold. This compound is a ​chirally pure, trifunctional building block​ that integrates a reactive ethyl ester, a stereodefined secondary alcohol, and a terminal chloride into a compact C4 skeleton. It is the ​preferred industrial precursor​ for synthesizing the chiral side chain of blockbuster statin drugs due to its optimal balance of reactivity, stability, and efficient biocatalytic production.  

Ethyl (R)-4-cyano-3-hydroxybutyrate​ CAS 141942-85-0 is a chiral, bifunctional building block of significant importance in asymmetric synthesis. It contains a stereogenic center with (R)-configuration, an ethyl ester group, and a terminal nitrile group, making it a versatile precursor for constructing complex chiral molecules, particularly in pharmaceutical applications. This compound is a ​stereodefined, multifunctional chiral building block​ where the (R)-configured alcohol and versatile cyano group provide unique synthetic leverage. It serves as a ​privileged precursor for high-value pharmaceutical intermediates, particularly statin side chains, by offering superior and orthogonal reactivity compared to its chloro analog. ​