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(R)-3-tert-Butoxy-2-aminopropanamide (CAS 211755-73-6) is a chiral, enantiomerically pure amino amide derivative featuring a tert-butoxy protecting group at the C3 position and a primary amide functionality at the terminus of the propanamide backbone. Structurally, the molecule consists of a three-carbon propanamide chain with an amino group at the C2 position (the stereogenic center bearing the (R)-configuration) and a bulky tert-butoxy group (-O-C(CH₃)₃) attached to the C3 position.

7-hydroxy-7-(4-((1-methylpiperidine-4-carbonyl)oxy)butyl)tridecane-1,11-diyl bis(2-hexyldecanoate) — also known as CL15F6 — is an ionizable cationic lipid engineered for the precise delivery of nucleic acid therapeutics. Structurally, the molecule features a central tertiary alcohol (the “7-hydroxy” group) on a C13 alkyl spacer, which serves as the branching point for the two hydrophobic tails. Each of these tails is a 2‑hexyldecanoate ester — a branched, saturated C16 fatty acid chain (a 2-hexyldecanoate is a 16‑carbon chain with a hexyl side chain at the second carbon, commonly used to increase fluidity and reduce crystallinity). At the opposite end, a flexible four‑carbon butyl linker connects the core scaffold to a 1‑methylpiperidine‑4‑carboxylate headgroup.

OF-C4-Deg-Lin is a cutting‑edge, highly customizable ionizable lipid designed specifically for next‑generation lipid nanoparticle (LNP) formulations. Structurally, OF-C4-Deg-Lin features a complex, multi‑arm architecture built around a central piperazine‑2,5‑dione (diketopiperazine) core. Flanking this core are two identical branched amine units, each bearing two linoleic acid‑derived tails (C18:2). The molecule incorporates flexible linker segments of defined length, which modulate the overall hydrophobicity and ionization behavior. This symmetrical, multi‑tailed design—containing a total of four unsaturated fatty acid chains—allows OF-C4-Deg-Lin to adopt a cone‑shaped geometry critical for the formation of stable, ionizable LNP systems. The central diketopiperazine ring provides a rigid yet functionalizable scaffold, while the branched tertiary amine headgroup confers pH‑dependent ionizability. The extensive hydrophobic domain, built from four linoleoyl chains, ensures strong lipid bilayer packing and efficient encapsulation of large nucleic acid payloads such as mRNA and siRNA.

IC8 (CAS 2349307-32-8) is an ionizable cationic lipid featuring a complex multi‑amine polyether structure with multiple long alkyl chains. The molecular architecture incorporates a central piperazine scaffold linked to four polyether tails terminated with hydroxyl groups, enabling pH‑dependent charge modulation — unprotonated at physiological pH to reduce toxicity, and protonated in the acidic endosomal environment to facilitate endosomal escape. This unique ionizable property, combined with the molecule‘s high molecular weight (approximately 1050 g/mol) and amphiphilic character, makes IC8 exceptionally effective as a formulation component for lipid nanoparticles (LNPs) in nucleic acid delivery applications.

2-Propenoic Acid, 2‑(Octyldithio)ethyl Ester (CAS 2130960‑87‑9), also known as 2‑(octyldisulfanyl)ethyl acrylate or acrylic acid 2‑(octyldithio)ethyl ester, is a short‑chain disulfide‑containing acrylate monomer. The molecule consists of a polymerizable acrylic ester head group that readily undergoes free‑radical addition polymerization, coupled with an octyldithio segment (C₈H₁₇S–S–) featuring a reducible disulfide bond and a moderately lipophilic octyl tail. Compared to its decyl and dodecyl homologs, the C₈ alkyl chain of 2-Propenoic Acid, 2‑(Octyldithio)ethyl Ester offers reduced hydrophobicity, enabling formulation of lipid nanoparticles with faster disassembly kinetics and potentially different biodistribution profiles. The disulfide bond provides redox‑responsiveness — stable under oxidizing extracellular conditions but rapidly cleaved in the reducing intracellular environment — making 2-Propenoic Acid, 2‑(Octyldithio)ethyl Ester an ideal building block for bioreducible polymers and cationic lipids that require efficient nucleic acid release upon cellular entry.

(R)-3-Aminotetrahydrofuran-3-carboxylic acid (CAS 1315053-78-1) is a chiral, non-proteinogenic, Cα-tetrasubstituted cyclic amino acid characterized by a tetrahydrofuran ring with geminal amine and carboxylic acid substituents at the 3-position. The molecule features a five-membered oxygen-containing heterocycle (tetrahydrofuran) that serves as the core scaffold, with an amino group (-NH₂) and a carboxylic acid (-COOH) both attached to the same carbon at the 3-position of the ring.