Overview
Acetonides are a group of chemical compounds formed by the reaction of acetone with diols or other polyols, creating cyclic ketals. They are widely utilized in pharmaceutical chemistry, particularly as prodrugs or stabilizers for active ingredients like corticosteroids. The isopropylidene (acetonide) group enhances lipid solubility and prolongs drug release. Common examples include Triamcinolone acetonide (anti-inflammatory) and Fluocinolone acetonide (dermatological use). Their synthesis typically involves acid-catalyzed reactions with acetone under controlled conditions, yielding compounds with improved stability compared to their parent molecules.
Physical and Chemical Properties
Acetonides generally exhibit high melting points and thermal stability due to their cyclic structure. They are hydrophobic, with solubility primarily in organic solvents like methanol or chloroform. The isopropylidene group is sensitive to hydrolysis, especially under acidic or alkaline conditions, reverting to acetone and the original polyol. Spectroscopic characterization (e.g., IR, NMR) typically shows distinctive peaks for the acetonide moiety (e.g., ~1.3–1.5 ppm for methyl protons in 1H NMR). Analytical methods such as HPLC are used to assess purity, with pharmaceutical-grade acetonides requiring ≥99% purity for critical applications.
Main Applications
In pharmaceuticals, acetonides modify drug pharmacokinetics. For instance, Triamcinolone acetonide’s lipophilicity allows sustained topical action in creams or injectables. They also serve as protecting groups in organic synthesis, temporarily masking hydroxyl groups during multi-step reactions. Industrial uses include specialty polymers and adhesives, where acetonide derivatives improve material properties. In agrochemicals, certain acetonide formulations enhance pesticide delivery systems. The versatility of these compounds stems from their tunable stability and compatibility with diverse chemical processes.
Safety and Storage
Most acetonides require handling with gloves and eye protection due to potential irritation. Dust control is essential in bulk processing to prevent inhalation risks. Storage mandates airtight containers in cool, dry environments to avoid moisture-induced degradation. Disposal should comply with local regulations for organic compounds. Spills can be managed with inert absorbents (e.g., vermiculite) followed by solvent cleaning. Material Safety Data Sheets (MSDS) must be reviewed for compound-specific hazards, as toxicity varies by derivative.
B2B Procurement Guide
Buyers should prioritize suppliers with ISO-certified manufacturing and batch-specific Certificates of Analysis (CoA). Key specifications include purity (HPLC assay), residual solvent levels, and heavy metal content. For pharmaceutical applications, compliance with USP/EP monographs is critical. Bulk purchases (25+ kg) often reduce costs by 15–30%. Sample testing for consistency is advised before large orders. Logistics must ensure temperature-controlled transport for sensitive derivatives. Leading producers are located in China, India, and Europe, with regional variations in pricing and quality standards.
Related Manufacturers
- 主营：前胡醇、甘氨酸、毛喉帖、acetonide800389、水苏糖、金合欢、银椴苷、银杏叶、络塞定、茄边碱、鸡骨草、石蒜碱、广藿香、高良姜、绵子糖、紫苏葶、女贞子、紫苏烯、旋复花、肌氨酸、双黄酮、松脂素、甲乙基、棉花素、褪黑素、鸡骨香
- 主营：抑制剂、化合物库、药物筛选、acetonide、天然产物
- 主营：在水中、包含肽、含叠氮、丙炔基、由氨基、菁染料、peg单元、具有炔、胺hcl盐、阿尔法、催化剂、peg试剂、结构式、氨基nh2、3694-51-7、碘化物、4727-50-8、具有两、带有炔、磺酸基、3065-79-0、aminopeg8、甲基九、bcn基团、荧光素
- 主营：古龙酸、6-疏基瞟呤、紫草素、6-氯嘌呤、菲啰嗪一钠盐、6-二氟-4-羟基苯腈
- 主营：碘海醇、葡甲胺、氨甲环酸、盐酸柔红霉素、甘油磷酸钠、海藻糖、葡乙胺、古龙酸、托吡酯、潮霉素B、替卡西林钠克拉维酸钾、星孢菌素、盐酸阿霉素、碘帕醇
- 主营：酒渣碱、异常山乙素、芦丁标准品、acetonide、对照品标准品
- 主营：标准品、细辛脂素、百两金素、acetonide、延胡索乙素、桃叶珊瑚苷、脱氢紫堇碱
- 主营：加帽酶、激活剂、甘氨酸、Triamcinoloneacetonide、igg抗体、稳定液、玻璃板、试剂盒、脂蛋白、超纯水、激动剂、胆固醇、盐酸盐、因质粒、扩容剂、组化笔、驴抗人、预制胶、驴抗兔、生物驴、草甘膦、重组酶、生物素、曲拉通、去除剂、封闭液
- 主营：桤木酮、香附酮、1617-70-5、皂苷rd2、苍术素、2586-96-1、松脂素、管花苷、dl-醉椒、柯诺辛、苜蓿素、夹竹桃、7729-23-9、5928-25-6、化合物、口山酮、3668-14-2、白麻苷、异甘草、木皂苷、脱氧马、刺五加、皂苷rg3、苷甲酯、2292-16-2
- 主营：acetonide、香精香料化妆品、中药对照品
- 主营：实验试剂、工具化合物、抗体抑制剂、重组蛋白
- 主营：高纯度科研试剂
- 主营：钛酸酯、阻燃剂、彩色显影剂 CD-3、彩色显影剂 CD-4、催化剂、邻苯三酚、L-丙交酯、左旋樟脑磺酸、右旋樟脑磺酸、三碘化硼、纳斯特试剂