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≥98% for sensitive chromatographic and analytical workflows requiring minimal baseline interference.
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SDS, COA, datasheet, and spec sheet available for download. Lot-specific COA accessible via lot number lookup.
Cited in 24 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.
2-Methyl-3-butyn-2-ol (MBY) is used as a precursor in the Mannich reaction and can undergo selective semihydrogenation to produce fine chemicals.
| Pubchem Sid | 488180739 |
|---|---|
| Pubchem Sid Url | https://pubchem.ncbi.nlm.nih.gov/substance/488180739 |
| Canonical Smiles | CC(C)(C#C)O |
| IUPAC Name | 2-methylbut-3-yn-2-ol |
| InChIKey | CEBKHWWANWSNTI-UHFFFAOYSA-N |
| INCHI | 1S/C5H8O/c1-4-5(2,3)6/h1,6H,2-3H3 |
| Isomeric SMILES | CC(C)(C#C)O |
| WGK Germany | 1 |
| RTECS | ES0810000 |
| UN Number | 1987 |
| Packing Group | I |
| Molecular Weight | 84.12 |
| Beilstein | 635746 |
| Reaxy-Rn | 635746 |
| Reaxys-RN_link_address | https://www.reaxys.com/reaxys/secured/hopinto.do?context=S&query=IDE.XRN=635746&ln= |
Comprehensive hazard, handling, storage, and regulatory compliance document.
Download SDS →Lot-specific quality data. Enter your lot number to retrieve the exact COA.
Look up COA →Full quality attributes and acceptance criteria for this grade.
View spec sheet →Taxonomy Tree
| Kingdom | Organic compounds |
|---|---|
| Superclass | Organic oxygen compounds |
| Class | Organooxygen compounds |
| Subclass | Carbonyl compounds |
| Intermediate Tree Nodes | Alpha,beta-unsaturated carbonyl compounds - Alpha,beta-unsaturated ketones |
| Direct Parent | Ynones |
| Alternative Parents | Tertiary alcohols Acetylides Hydrocarbon derivatives |
| Molecular Framework | Aliphatic acyclic compounds |
| Substituents | Ynone - Tertiary alcohol - Acetylide - Hydrocarbon derivative - Alcohol - Aliphatic acyclic compound |
| Description | This compound belongs to the class of organic compounds known as ynones. These are organic compounds containing the ynone functional group, an alpha,beta unsaturated ketone group with the general structure RC#C-C(=O)R' (R' not H). |
| External Descriptors | Not available |
Find and download the COA for your product by matching the lot number on the packaging.
| Lot Number | Certificate Type | Date | Item |
|---|---|---|---|
| Certificate of Analysis | Jun 11, 2026 | M107736 | |
| Certificate of Analysis | Jan 19, 2026 | M107736 | |
| Certificate of Analysis | Nov 26, 2025 | M107736 | |
| Certificate of Analysis | Nov 26, 2025 | M107736 | |
| Certificate of Analysis | Nov 26, 2025 | M107736 | |
| Certificate of Analysis | Nov 26, 2025 | M107736 | |
| Certificate of Analysis | Nov 26, 2025 | M107736 | |
| Certificate of Analysis | Sep 08, 2025 | M107736 | |
| Certificate of Analysis | Jun 10, 2025 | M107736 | |
| Certificate of Analysis | May 30, 2025 | M107736 | |
| Certificate of Analysis | May 30, 2025 | M107736 | |
| Certificate of Analysis | May 30, 2025 | M107736 | |
| Certificate of Analysis | Apr 18, 2025 | M107736 | |
| Certificate of Analysis | Jan 06, 2025 | M107736 | |
| Certificate of Analysis | Jan 06, 2025 | M107736 | |
| Certificate of Analysis | Dec 10, 2024 | M107736 | |
| Certificate of Analysis | Nov 30, 2024 | M107736 | |
| Certificate of Analysis | Nov 30, 2024 | M107736 | |
| Certificate of Analysis | Nov 30, 2024 | M107736 | |
| Certificate of Analysis | Nov 30, 2024 | M107736 | |
| Certificate of Analysis | Nov 30, 2024 | M107736 | |
| Certificate of Analysis | May 31, 2024 | M107736 | |
| Certificate of Analysis | May 31, 2024 | M107736 | |
| Certificate of Analysis | May 31, 2024 | M107736 | |
| Certificate of Analysis | May 31, 2024 | M107736 | |
| Certificate of Analysis | May 31, 2024 | M107736 | |
| Certificate of Analysis | Mar 13, 2024 | M107736 | |
| Certificate of Analysis | Mar 13, 2024 | M107736 | |
| Certificate of Analysis | Dec 15, 2023 | M107736 | |
| Certificate of Analysis | Dec 15, 2023 | M107736 | |
| Certificate of Analysis | Sep 28, 2023 | M107736 | |
| Certificate of Analysis | Sep 15, 2023 | M107736 | |
| Certificate of Analysis | Sep 13, 2023 | M107736 | |
| Certificate of Analysis | Feb 22, 2023 | M107736 | |
| Certificate of Analysis | Feb 22, 2023 | M107736 | |
| Certificate of Analysis | Feb 22, 2023 | M107736 | |
| Certificate of Analysis | Dec 13, 2022 | M107736 | |
| Certificate of Analysis | Dec 13, 2022 | M107736 | |
| Certificate of Analysis | Aug 06, 2022 | M107736 | |
| Certificate of Analysis | Aug 06, 2022 | M107736 | |
| Certificate of Analysis | Jul 19, 2022 | M107736 | |
| Certificate of Analysis | Feb 28, 2022 | M107736 | |
| Certificate of Analysis | Feb 28, 2022 | M107736 | |
| Certificate of Analysis | Feb 28, 2022 | M107736 | |
| Certificate of Analysis | Feb 17, 2022 | M107736 |
| Solubility | Fully miscible. |
|---|---|
| Refractive Index | 1.42 |
| Flash Point(°F) | 68 °F |
| Flash Point(°C) | 22 °C |
| Boil Point(°C) | 104°C |
| Melt Point(°C) | 2.6°C |
| Molecular Weight | 84.120 g/mol |
| XLogP3 | 0.300 |
| Hydrogen Bond Donor Count | 1 |
| Hydrogen Bond Acceptor Count | 1 |
| Rotatable Bond Count | 1 |
| Exact Mass | 84.0575 Da |
| Monoisotopic Mass | 84.0575 Da |
| Topological Polar Surface Area | 20.200 Ų |
| Heavy Atom Count | 6 |
| Formal Charge | 0 |
| Complexity | 83.400 |
| Isotope Atom Count | 0 |
| Defined Atom Stereocenter Count | 0 |
| Undefined Atom Stereocenter Count | 0 |
| Defined Bond Stereocenter Count | 0 |
| Undefined Bond Stereocenter Count | 0 |
| The total count of all stereochemical bonds | 0 |
| Covalently-Bonded Unit Count | 1 |
| 1. Yuan Wang, Yuanbo Cai, Youquan Ling, Haoruo Zhang, Jinfeng Tian, Zhengguang Heng, Shengtai Zhou, Shuang Xia, Mei Liang, Huawei Zou. (2023) Improved Mechanical and Ablative Properties of PDMS Coatings Incorporating Epoxy as a Suspended Chain. INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, [PMID:] [10.1021/acs.iecr.3c00814] |
| 2. Jiaxing Tang, Chenhe Yao, Zhongwei An, Ran Chen, Zihao Mao, Xinbing Chen, Pei Chen. (2023) Balance the trade-offs between high birefringence, large dielectric anisotropy and low viscosity in nematic liquid crystals through molecular splicing strategy. LIQUID CRYSTALS, [PMID:] [10.1080/02678292.2023.2222677] |
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| 5. Yuan Wang, Yuanbo Cai, Hao Zhang, Ji Zhou, Shengtai Zhou, Yang Chen, Mei Liang, Huawei Zou. (2021) Mechanical and thermal degradation behavior of high-performance PDMS elastomer based on epoxy/silicone hybrid network. POLYMER, [PMID:] [10.1016/j.polymer.2021.124299] |
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| 7. Jiajia Liu, Xiaochen Tang, Huiling Lu, Yingjie Xu. (2021) Insight into the Interactions between Azole-Anion-Based Ionic Liquids and Propargylic Alcohol: Influence on the Carboxylative Cyclization of Propargylic Alcohol with Carbon Dioxide. ACS Sustainable Chemistry & Engineering, [PMID:] [10.1021/acssuschemeng.0c08653] |
| 8. Lingqi Huang, Kecheng Hu, Ganggang Ye, Zhibin Ye. (2021) Highly selective semi-hydrogenation of alkynes with a Pd nanocatalyst modified with sulfide-based solid-phase ligands. Molecular Catalysis, [PMID:] [10.1016/j.mcat.2021.111535] |
| 9. Guiling Shi, Ran Zhai, Haoran Li, Congmin Wang. (2020) Highly efficient synthesis of alkylidene cyclic carbonates from low concentration CO2 using hydroxyl and azolate dual functionalized ionic liquids. GREEN CHEMISTRY, 23 (1): (592-596). [PMID:] [10.1039/D0GC03510F] |
| 10. Zhongzhe Wei, Zihao Yao, Qiang Zhou, Guilin Zhuang, Xing Zhong, Shengwei Deng, Xiaonian Li, Jianguo Wang. (2019) Optimizing Alkyne Hydrogenation Performance of Pd on Carbon in Situ Decorated with Oxygen-Deficient TiO2 by Integrating the Reaction and Diffusion. ACS Catalysis, [PMID:] [10.1021/acscatal.9b03300] |
| 11. Shanjun Mao, Bowen Zhao, Zhe Wang, Yutong Gong, Guofeng Lü, Xiao Ma, Lili Yu, Yong Wang. (2019) Tuning the catalytic performance for the semi-hydrogenation of alkynols by selectively poisoning the active sites of Pd catalysts. GREEN CHEMISTRY, 21 (15): (4143-4151). [PMID:] [10.1039/C9GC01356C] |
| 12. Yanan Liu, Jiaying Zhao, Junting Feng, Yufei He, Yiyun Du, Dianqing Li. (2018) Layered double hydroxide-derived Ni-Cu nanoalloy catalysts for semi-hydrogenation of alkynes: Improvement of selectivity and anti-coking ability via alloying of Ni and Cu. JOURNAL OF CATALYSIS, [PMID:] [10.1016/j.jcat.2018.01.009] |
| 13. Lingfeng Shen, Shanjun Mao, Jianqing Li, Mingming Li, Ping Chen, Haoran Li, Zhirong Chen, Yong Wang. (2017) PdZn intermetallic on a CN@ZnO hybrid as an efficient catalyst for the semihydrogenation of alkynols. JOURNAL OF CATALYSIS, [PMID:] [10.1016/j.jcat.2017.01.021] |
| 14. Baohua Yue, Guangbo Zeng, Yepei Zhang, Sheng Tao, Xiaoming Zhang, Liuming Yan. (2016) Improved performance of acid-base composite of phosphonic acid functionalized polysulfone and triazolyl functionalized polysulfone for PEM fuel cells. SOLID STATE IONICS, [PMID:] [10.1016/j.ssi.2016.11.011] |
| 15. Ran Chen, Zhongwei An, Feng Li, Xinbing Chen, Pei Chen. (2016) Synthesis and physical properties of tolane liquid crystals containing 2,3-difluorophenylene and terminated by a tetrahydropyran moiety. LIQUID CRYSTALS, [PMID:] [10.1080/02678292.2015.1125959] |
| 16. Wenxin Wang, Ruidong Yang, Qiqi Mao, Xu Mu, Hongjie Yu, Kai Deng, Jianguo Wang, Liang Wang, Hongjing Wang. (2024) Electron Bridge Effect Induced by Oxygen-Bridged Ga on PdMo Bimetallene Nanoribbons for Boosting Electrocatalytic Alkynol Semihydrogenation. ADVANCED FUNCTIONAL MATERIALS, [PMID:] [10.1002/adfm.202410614] |
| 17. Xiong Jinqi, Mao Shanjun, Luo Qian, Ning Honghui, Lu Bing, Liu Yanling, Wang Yong. (2024) Mediating trade-off between activity and selectivity in alkynes semi-hydrogenation via a hydrophilic polar layer. Nature Communications, 15 (1): (1-10). [PMID:38336938] [10.1038/s41467-024-45104-6] |
| 18. Cheng-Long Li, Rui-Ping Zhang, Lu Hou, Ya-Dong Xie, An-Hui Lu. (2025) Monolithic wood-based carbon supported Pd nanoparticles with tunable exposure for boosting semi-hydrogenation of alkynols. Catalysis Science & Technology, [PMID:] [10.1039/D4CY01543F] |
| 19. Yan Gao, Dezheng Chang, Yuyang Luo, Haojie Yu, Jinhui Li, Kunming Liu. (2024) Synthesis of an Antipyrine-Based Fluorescent Probe with Synergistic Effects for the Selective Recognition of Zinc Ion. Minerals, 14 (7): (649). [PMID:] [10.3390/min14070649] |
| 20. Cheng-Long Li, Rui-Ping Zhang, Lu Hou, An-Hui Lu. (2025) Pd Supported on Surface Sulfur-Doped Mesoporous Monolithic Carbon to Boost Semihydrogenation of Alkynols. ChemCatChem, [PMID:] [10.1002/cctc.202501282] |
| 21. Yun Fang, Yong Yan, Xiayan Wang, Guangsheng Guo. (2025) Bimetallic PdCu nanohybrid sheets for enhanced electrocatalytic selective semi-hydrogenation of alkynols. CHEMICAL ENGINEERING JOURNAL, [PMID:] [10.1016/j.cej.2025.164620] |
| 22. Yang Zhang, Shitian Han, Bojie Fu, Shuai Li, Ziwen Sun, Zhengguang Heng, Shuang Xia, Yang Chen, Liwei Yan, Mei Liang, Huawei Zou. (2025) Preparation of Robust Thermal Protection Silicone Rubber by Constructing Interconnected C–Si Hybrid IPNs. INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, [PMID:] [10.1021/acs.iecr.5c03410] |
| 23. Ziqi Zhang, Hui Xu, Haojie Chu, Hong Meng, Hongwei Fan, Yingzhou Lu, Chunxi Li. (2026) Nucleophilic Reactivity of Calcium Carbide: Its Catalytic Activation and Reaction with Acetone to Synthesize Non-Ionic Defoamers. Catalysts, 16 (1): (49). [PMID:] [10.3390/catal16010049] |
| 24. Li Minghang, Fu Zhaoyuan, Luo Qian, Lu Bing, Zhang Liwei, Liang Shipan, Liu Ting, Wang Yong, Mao Shanjun. (2026) Decoupling electronic and geometric effects in Pd catalysts via thermal surface reconstruction for selective hydrogenation. Nature Communications, 17 (1): (2500). [PMID:] [10.1038/s41467-026-70568-z] |