Overview
Mixed disulfides are organic compounds containing a disulfide bond (-S-S-) between two different alkyl or aryl groups (R-S-S-R'). They are structurally distinct from symmetric disulfides (R-S-S-R) and play specialized roles in chemical synthesis and biological systems. These compounds are intermediates in redox reactions and are pivotal in protein biochemistry, where they contribute to disulfide bridge formation. Industrially, they serve as crosslinking agents in rubber vulcanization and precursors for sulfur-containing pharmaceuticals.
Physical and Chemical Properties
Mixed disulfides exhibit properties influenced by their organic substituents. The S-S bond is thermally labile and susceptible to reduction, making these compounds reactive under certain conditions. Their solubility depends on the hydrocarbon groups attached; hydrophobic variants dissolve better in organic solvents. Density and melting points vary widely. For example, small alkyl mixed disulfides are often liquids at room temperature, while aromatic derivatives tend to be solids. The S-S bond absorbs UV light near 250–280 nm, a feature useful for analytical detection.
Main Applications
In biochemistry, mixed disulfides form transiently during thiol-disulfide exchange reactions, critical for enzyme regulation and protein folding. Industrially, they are used in rubber processing to modify polymer networks, enhancing material properties like elasticity. Pharmaceutical applications include prodrug design, where disulfide bonds improve drug delivery. For instance, some antibiotic conjugates exploit mixed disulfides for targeted release. Additionally, they serve as ligands in catalysis and intermediates in agrochemical synthesis.
Safety and Storage
Mixed disulfides require careful handling due to potential skin/eye irritation and reactivity with oxidizing agents. Proper PPE (gloves, goggles) and fume hoods are recommended. Some derivatives emit odorous volatiles upon decomposition. Storage should be in airtight containers under inert gas (e.g., nitrogen) to prevent oxidation. Refrigeration may be necessary for labile compounds. Always consult SDS for specific hazards, as toxicity varies by structure (e.g., aromatic vs. aliphatic groups).
B2B Procurement Guide
When sourcing mixed disulfides, clearly specify the R and R' groups, purity (e.g., 95%, 98%), and analytical certificates. Bulk buyers should request stability data and compatibility testing if used in formulations. Suppliers often customize synthesis; lead times may apply. Prices fluctuate based on complexity—simple alkyl derivatives cost less than chiral or pharmaceutical-grade variants. Consider logistical factors: some compounds require temperature-controlled shipping.
Related Manufacturers
- 主营：催化剂、peg试剂、cy5四氮、混合二硫化物、活性脂、苯二胺、2406-34-0、乙氧基、试剂cas、环辛烯、生物素、cb-cyclam、实验室、dbco-acid、半乳糖、溴苯基、交联剂、环己炔、荧光素、3694-51-7、ac4galnal、2001-96-9、葡萄糖、环辛炔、直发cas、糖化学
- 主营：荧光染料、花青素染料
- 主营：金属铝、镀膜机、银颗粒、锆钛混合物、陶瓷环、硫化锌、高纯材料、镀膜材料、金属铬颗粒、石墨加热器、电子枪枪头、高纯度锡粒、镀膜金属材料、金属镍铬合金、镍铬合金颗粒、光学镀膜材料、镀膜机配件、二氧化锆
- 主营：聚维酮碘、磺酸二钠盐、间溴硝基苯、二硫化物、己二酰氯、柠檬酸钴、溴化镍、氟化锌、焦锑酸钾、硫化钡、苯磺酰氯
- 主营：医药中间体、香精香料、选矿药剂、二硫化物与炭黑混合物、化工原料、助剂、偶联剂、扩链剂、化妆品原料
- 主营：二硫化物、偶联剂
- 主营：乙硫醇、环丁砜、四氢吡咯、四氢噻吩、四氢呋喃、三聚甲醛、3-羟基丙腈、二甲基亚砜、二甲基二硫醚、氯乙酸、氯乙酸钠、偏铝酸钠、异辛烷、偏三甲苯、硬脂酸锌、苯酚、邻苯二甲酸二丁酯、MIBC、苯酐、顺酐
- 主营：全水溶、亚硫酸、泡腾片、木质素、洗涤去污、化学试剂、工业尿素、工业淀粉、水产养殖、增稠填充剂、养殖添加剂、液体水溶肥、七水硫酸锌、建筑添加剂、叶面喷施肥、油品脱色剂、除垢清洗剂、营养添加剂、水质改良剂、复合氨基酸、二胺四乙酸、破壁酵母粉、轻质碳酸钠、水处理增氧片
- 主营：聚乙二醇、聚丙二醇、叔胺、伯胺、染料中间体
- 主营：偶联剂
- 主营：试剂盒、elisa试剂盒、细胞、pcr试剂盒
- 主营：四氢噻吩、乙硫醇、单氰胺、二甲基二硫醚、3-甲硫基丙醛、四氢吡咯、邻氯苯腈、噻吩、盐酸羟胺、硬脂酸锌、异丙胺、氯乙酸、氟硼酸
- 主营：聚苯胺、脯氨酸甲酯盐酸盐、苄基三甲基氯化铵
- 主营：甲基丙烯酸十二酯、甲基丙烯酸十六酯、甲基丙烯酸十八酯、丙烯酸十二酯、丙烯酸十六酯、丙烯酸十八酯、V50引发剂、偶氮二异丁咪唑啉盐酸盐、N-乙酰己内酰胺、硅烷偶联剂、双马来酰亚胺、马来酸酯、缩水甘油酯、缩水甘油醚、甲基咪唑、N-异丙基丙烯酰胺、金属萃取剂
- 主营：阻燃剂、催化剂、水杨酸、二苯基、酰亚胺、正磷酸、烟酰胺、曲酸粉、氯化锌、异丙醇、化妆品、初油酸、脂肪醇、生石灰、甲基异、碳酸锌、碳酸锂、活性炭、乙二胺、三氮唑、着色剂、环己酮、防冻液、抗氧剂、亚磷酸
- 主营：全氟聚醚二醇、全氟三丁胺、聚硅氮烷、特种硅油、特种硅树脂
- 主营：甘氨酸、水苏糖、阻燃剂、烷基酚二硫化物、硫酸锌、硫酸锆、硫酸锂、硫酸锶、硫酸锰、铝酸锌、1680-21-3、牛磺酸、褪黑素、磷酸铁、丙酸铵、苏云金、碳酸镁、麝香酮、肉桂醛、磷酸铝、王浆酸、椰油胺、赖氨酸、增塑剂、浸膏粉、乙氧基
- 主营：有机原料、中间体、香精香料、催化剂、有机硅、表面活性剂