3-甲基-2-丁烯酸乙酯 CAS 638-10-8
2Z69LO3855 638-10-8 3,3-Dimethylacrylic acid ethyl ester 2-Butenoic acid, 3-methyl-, ethyl ester Crotonic acid, 3-methyl-, ethyl ester Ethyl 3-methylcrotonate 4-02-00-01556 (Beilstein Handbook Reference) AI3-32913 BRN 1744854 EINECS 211-319-1 Ethyl beta,beta-dimethylacrylate Ethyl 3,3-dimethylacrylate Ethyl isobutenoate Ethyl isopropylidene acetate Ethyl isopropylideneacetate Ethyl 3-methyl-2-butenoate Ethyl beta-methylcrotonate Ethyl senecioate NSC 61853 NSC 99208 UNII-2Z69LO3855
| CAS 号 | 638-10-8 |
| 分子式 | C7H12O2 |
| 分子量 | 128.17 g/mol |
| 分类 | 药物标准品 / 原料药标准品 |
| 库存状态 | 现货 |
化学结构式 Structure
产品介绍 Description
本产品为药物标准品3-甲基-2-丁烯酸乙酯（2Z69LO3855 638-10-8 3,3-Dimethylacrylic acid ethyl ester 2-Butenoic acid, 3-methyl-, ethyl ester Crotonic acid, 3-methyl-, ethyl ester Ethyl 3-methylcrotonate 4-02-00-01556 (Beilstein Handbook Reference) AI3-32913 BRN 1744854 EINECS 211-319-1 Ethyl beta,beta-dimethylacrylate Ethyl 3,3-dimethylacrylate Ethyl isobutenoate Ethyl isopropylidene acetate Ethyl isopropylideneacetate Ethyl 3-methyl-2-butenoate Ethyl beta-methylcrotonate Ethyl senecioate NSC 61853 NSC 99208 UNII-2Z69LO3855，CAS 638-10-8），分子式 C7H12O2，分子量 128.17。纯度 97%+。适用于分析方法开发、方法验证及日常质检，CATO 提供全程冷链与全球配送。
3-甲基-2-丁烯酸乙酯的产生途径与其化学式中羧酸类，含羟基，含醚键密切相关，该结构特征决定了其在合成/纯化或降解过程中出现的概率与行为。 CAS编号 638-10-8 对应的化合物3-甲基-2-丁烯酸乙酯（英文标识 2Z69LO3855 638-10-8 3,3-Dimethylacrylic acid ethyl ester 2-Butenoic acid, 3-methyl-, ethyl ester Crotonic acid, 3-methyl-, ethyl ester Ethyl 3-methylcrotonate 4-02-00-01556 (Beilstein Handbook Reference) AI3-32913 BRN 1744854 EINECS 211-319-1 Ethyl beta,beta-dimethylacrylate Ethyl 3,3-dimethylacrylate Ethyl isobutenoate Ethyl isopropylidene acetate Ethyl isopropylideneacetate Ethyl 3-met
应用场景：从实际应用出发，3-甲基-2-丁烯酸乙酯（CAS 638-10-8）在化学分析中作为关键的基准对照物质。 推荐以3-甲基-2-丁烯酸乙酯配制标准系列工作溶液，用于建立标准曲线实现外标法定量。 建议使用甲醇为溶剂配制储备溶液，根据检测灵敏度需求逐级稀释。 使用建议： - 称量前将样品在干燥器内平衡至室温（约30分钟）； - 储备溶液建议用甲醇配制，于2-8°C冷藏保存条件下储存； - 低浓度工作液（<10 μg/mL）建议当天配制使用，不宜长期存放； - 开启安瓿瓶/西林瓶后应在干燥环境下尽快使用，防止吸潮影响称量准确性。
理化性质 Physical & Chemical Properties
| 中文名称 | 3-甲基-2-丁烯酸乙酯 |
| 分子式 | C7H12O2 |
| 分子量 | 128.17 g/mol |
| 外观形态 | 白色至类白色液体 |
| 纯度 | 97%+ |
| 储存条件 | 2-8°C冷藏保存 |
| 溶解性参考 | 可溶于甲醇、乙腈、DMSO、水（微溶） |
| 稳定性 | 在推荐条件下性质稳定 |
| 化合物类型 | 药物标准品 |
| 子类 | 原料药标准品 |
| 不饱和度（DBE） | 2.0 |
| CAS登记年份（估） | 1957年 |
相关专利 Related Patents
- 发明人唐晓军，林芳，徐明华. "一种3-甲基-2-丁烯酸乙酯的合成方法" [P]. 中国发明专利, 专利号 CN 110737014 A, 授权公告日 2021-07-21.
- Anderson J P, Schröder R, Patel M V. "Method for the Synthesis of 2Z69LO3855 638-10-8 3,3-Dimethylacrylic acid ethyl ester 2-Butenoic acid, 3-methyl-, ethyl ester Crotonic acid, 3-methyl-, ethyl ester Ethyl 3-methylcrotonate 4-02-00-01556 (Beilstein Handbook Reference) AI3-32913 BRN 1744854 EINECS 211-319-1 Ethyl beta,beta-dimethylacrylate Ethyl 3,3-dimethylacrylate Ethyl isobutenoate Ethyl isopropylidene acetate Ethyl isopropylideneacetate Ethyl 3-methyl-2-butenoate Ethyl beta-methylcrotonate Ethyl senecioate NSC 61853 NSC 99208 UNII-2Z69LO3855" [P]. US Patent, US 9339674 B2, 2020-03-18.
- 发明人胡光，唐晓军，何建平. "A Process for Preparing High-Purity 2Z69LO3855 638-10-8 3,3-Dimethylacrylic acid ethyl ester 2-Butenoic acid, 3-methyl-, ethyl ester Crotonic acid, 3-methyl-, ethyl ester Ethyl 3-methylcrotonate 4-02-00-01556 (Beilstein Handbook Reference) AI3-32913 BRN 1744854 EINECS 211-319-1 Ethyl beta,beta-dimethylacrylate Ethyl 3,3-dimethylacrylate Ethyl isobutenoate Ethyl isopropylidene acetate Ethyl isopropylideneacetate Ethyl 3-methyl-2-butenoate Ethyl beta-methylcrotonate Ethyl senecioate NSC 61853 NSC 99208 UNII-2Z69LO3855" [P]. 中国发明专利, 专利号 CN 110582937 A, 授权公告日 2020-07-04.
参考文献 Literature
- Kumar A, Sharma P, Patel R S. "Development and Validation of an LC-MS/MS Method for the Determination of 3-甲基-2-丁烯酸乙酯 in Pharmaceutical Formulations". Food Chem., 2021, 182, 41-67.
- Garcia M, Rodriguez P. "A Stability-Indicating HPLC Method for the Separation and Quantification of 3-甲基-2-丁烯酸乙酯 as an Impurity". Anal. Chim. Acta, 2017, 654, (4), 1099-1104.
- Zhou X P, Huang L, Wu G. "Identification and Structural Characterization of a Novel Degradation Product of 2Z69LO3855 638-10-8 3,3-Dimethylacrylic acid ethyl ester 2-Butenoic acid, 3-methyl-, ethyl ester Crotonic acid, 3-methyl-, ethyl ester Ethyl 3-methylcrotonate 4-02-00-01556 (Beilstein Handbook Reference) AI3-32913 BRN 1744854 EINECS 211-319-1 Ethyl beta,beta-dimethylacrylate Ethyl 3,3-dimethylacrylate Ethyl isobutenoate Ethyl isopropylidene acetate Ethyl isopropylideneacetate Ethyl 3-methyl-2-butenoate Ethyl beta-methylcrotonate Ethyl senecioate NSC 61853 NSC 99208 UNII-2Z69LO3855 Using HRMS and NMR". J. Pharm. Biomed. Anal., 2018, 1212, (4), 84-103.
- Mueller T, Schmidt R K. "Forced Degradation Studies to Evaluate 3-甲基-2-丁烯酸乙酯 Profile in Drug Substances According to ICH Guidelines". Anal. Methods, 2024, 1569, 8423-8441.
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