Determine the necessary mass, volume, or concentration for preparing a solution.
≥97% for sensitive chromatographic and analytical workflows requiring minimal baseline interference.
Store at 2-8°C,Argon charged Ships Wet ice Check lot-specific COA for exact specifications.
SDS, COA, datasheet, and spec sheet available for download. Lot-specific COA accessible via lot number lookup.
Cited in 10 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.
4-Formylpyrazole is a reactant in the preparation of 1, 3-disubstituted-pyrazole derivatives as new class I and IIb histone deacetylase inhibitors.
| Pubchem Sid | 504763235 |
|---|---|
| Pubchem Sid Url | https://pubchem.ncbi.nlm.nih.gov/substance/504763235 |
| Canonical Smiles | C1=C(C=NN1)C=O |
| IUPAC Name | 1H-pyrazole-4-carbaldehyde |
| InChIKey | LRGBDJBDJXZTTD-UHFFFAOYSA-N |
| INCHI | 1S/C4H4N2O/c7-3-4-1-5-6-2-4/h1-3H,(H,5,6) |
| Isomeric SMILES | C1=C(C=NN1)C=O |
| Molecular Weight | 96.09 |
| Reaxy-Rn | 742021 |
| Reaxys-RN_link_address | https://www.reaxys.com/reaxys/secured/hopinto.do?context=S&query=IDE.XRN=742021&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 | Aldehydes |
| Direct Parent | Aryl-aldehydes |
| Alternative Parents | Vinylogous amides Pyrazoles Heteroaromatic compounds Azacyclic compounds Organonitrogen compounds Organic oxides Hydrocarbon derivatives |
| Molecular Framework | Aromatic heteromonocyclic compounds |
| Substituents | Aryl-aldehyde - Heteroaromatic compound - Vinylogous amide - Pyrazole - Azole - Azacycle - Organoheterocyclic compound - Organic nitrogen compound - Organic oxide - Hydrocarbon derivative - Organonitrogen compound - Aromatic heteromonocyclic compound |
| Description | This compound belongs to the class of organic compounds known as aryl-aldehydes. These are compounds containing an aldehyde group directly attached to an aromatic ring. |
| 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 | Mar 18, 2026 | H176240 | |
| Certificate of Analysis | Feb 04, 2026 | H176240 | |
| Certificate of Analysis | Jan 10, 2026 | H176240 | |
| Certificate of Analysis | Jan 10, 2026 | H176240 | |
| Certificate of Analysis | Jan 10, 2026 | H176240 | |
| Certificate of Analysis | Jan 10, 2026 | H176240 | |
| Certificate of Analysis | Jan 10, 2026 | H176240 | |
| Certificate of Analysis | Jan 10, 2026 | H176240 | |
| Certificate of Analysis | Jan 03, 2025 | H176240 | |
| Certificate of Analysis | Jan 03, 2025 | H176240 | |
| Certificate of Analysis | Jan 03, 2025 | H176240 | |
| Certificate of Analysis | Jan 03, 2025 | H176240 | |
| Certificate of Analysis | Jan 03, 2025 | H176240 | |
| Certificate of Analysis | Jan 03, 2025 | H176240 | |
| Certificate of Analysis | Jan 03, 2025 | H176240 | |
| Certificate of Analysis | Jan 03, 2025 | H176240 | |
| Certificate of Analysis | Jan 03, 2025 | H176240 | |
| Certificate of Analysis | Oct 14, 2024 | H176240 | |
| Certificate of Analysis | May 15, 2024 | H176240 | |
| Certificate of Analysis | May 15, 2024 | H176240 | |
| Certificate of Analysis | May 15, 2024 | H176240 | |
| Certificate of Analysis | May 15, 2024 | H176240 | |
| Certificate of Analysis | May 15, 2024 | H176240 | |
| Certificate of Analysis | May 15, 2024 | H176240 | |
| Certificate of Analysis | May 15, 2024 | H176240 | |
| Certificate of Analysis | May 15, 2024 | H176240 | |
| Certificate of Analysis | Feb 21, 2024 | H176240 | |
| Certificate of Analysis | Feb 21, 2024 | H176240 | |
| Certificate of Analysis | Dec 15, 2021 | H176240 | |
| Certificate of Analysis | Dec 15, 2021 | H176240 | |
| Certificate of Analysis | Dec 15, 2021 | H176240 | |
| Certificate of Analysis | Dec 15, 2021 | H176240 | |
| Certificate of Analysis | Dec 15, 2021 | H176240 | |
| Certificate of Analysis | Dec 15, 2021 | H176240 | |
| Certificate of Analysis | Dec 15, 2021 | H176240 | |
| Certificate of Analysis | Dec 15, 2021 | H176240 | |
| Certificate of Analysis | Dec 15, 2021 | H176240 |
| Solubility | Chloroform (Slightly, Heated), Methanol (Slightly) |
|---|---|
| Sensitivity | Air Sensitive |
| Molecular Weight | 96.090 g/mol |
| XLogP3 | -0.900 |
| Hydrogen Bond Donor Count | 1 |
| Hydrogen Bond Acceptor Count | 2 |
| Rotatable Bond Count | 1 |
| Exact Mass | 96.0324 Da |
| Monoisotopic Mass | 96.0324 Da |
| Topological Polar Surface Area | 45.800 Ų |
| Heavy Atom Count | 7 |
| Formal Charge | 0 |
| Complexity | 74.100 |
| 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. Yi Liu, Shuangjiang Li, Manoj Pudukudy, Li Lin, Huigui Yang, Mengrui Li, Shaoyun Shan, Tianding Hu, Yunfei Zhi. (2023) Melamine-based nitrogen-heterocyclic polymer networks as efficient platforms for CO2 adsorption and conversion. SEPARATION AND PURIFICATION TECHNOLOGY, [PMID:] [10.1016/j.seppur.2023.125645] |
| 2. Yuhang Guo, Fusheng Pan, Guangzhaoyao Yang, Runnan Zhang, Shiyao Yu, Yuhan Wang, Ziting Zhu, Wenqing Gao, Zhiming Zhang, Tong Li, Zhongyi Jiang. (2023) Engineering metal-covalent organic framework-based hybrid oxygenation membranes for facilitated blood-gas exchange. JOURNAL OF MEMBRANE SCIENCE, [PMID:] [10.1016/j.memsci.2023.122088] |
| 3. Jin Du, Shuwei Liang, Meidi Wang, Yuhan Wang, Tianpei Yi, Zhiming Zhang, Fusheng Pan, Zhongyi Jiang. (2023) Metal-covalent organic framework nanosheets engineered facilitated transport membranes for toluene/n-heptane separation. JOURNAL OF MEMBRANE SCIENCE, [PMID:] [10.1016/j.memsci.2023.121840] |
| 4. Jing Sun, Senyang Song, Chuyan Deng, Qianqian Wang, Xiaoyan Ma. (2024) Enhancing energy storage and catalytic properties of bimetallic multifunctional MOFs by designing secondary-building units. Journal of Energy Storage, [PMID:] [10.1016/j.est.2024.112288] |
| 5. Senyang Song, Jing Sun, Chuyan Deng, Qianqian Wang, Xiaoyan Ma. (2024) Ligand Regulation and Capacitive Properties of Nickel Based Pyrazole Trinuclear Copper Cluster Organic Framework. COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS, [PMID:] [10.1016/j.colsurfa.2024.134052] |
| 6. Lin Yang, Zhou Yuan, Lufang He, Le Han, Bohan Li, Yan Xu. (2024) Polyoxometalate Functionalized Cyclic Trinuclear Copper Compounds for Bifunctional Electrochemical Detection and Photocatalytic Reduction of Cr(VI). INORGANIC CHEMISTRY, [PMID:38920359] [10.1021/acs.inorgchem.4c01508] |
| 7. Jiani Yang, Chao Xiong, Mi Zhou, Xianglin Luo, Xikui Liu, Chong Cheng, Chao He, Xiaohui Xu. (2025) Photoactivated Covalent Metal-Organic Frameworks with Dual Functionalities for efficient Colorimetric Sensing and Aerobic Oxidation Reaction. Journal of Materials Chemistry A, [PMID:] [10.1039/D5TA04000K] |
| 8. Siwei Wang, Jin Du, Zhanquan Zhang, Yan Wang, Zhijie Yuan, Yuhan Wang, Tianpei Yi, Fusheng Pan, Zhongyi Jiang. (2025) Cu(I)-COF facilitated transport membranes for aromatics-alkanes separation. CHEMICAL ENGINEERING SCIENCE, [PMID:] [10.1016/j.ces.2025.122727] |
| 9. Gaimei Gao, Lei Gong, Mengying Huang, Bowen Li, Kaiqing Zhang, Beibei Zhang, Gaohao Sun, Tao Yang, Kang Wang, Jianzhuang Jiang. (2026) Trinuclear copper clusters in three-dimensional covalent organic framework for enhanced electroreduction of carbon dioxide to ethylene. JOURNAL OF COLLOID AND INTERFACE SCIENCE, [PMID:] [10.1016/j.jcis.2026.140396] |
| 10. Hong Jiang, Qin-Xie Xie, Tianzhao Tian, Qingqing Yang, Peipei Qian, Jia-Yi Liu, Wending Yan, Shengfeng Huang, Cui Shao, Wei Yi, Yifa Chen, Xu-Jia Hong. (2026) Oxygen-Adaptive Covalent Organic Framework Nanoarchitectonics with High Photothermal Conversion Efficiency for Quadruple-Modal Tumor Therapy. Advanced Healthcare Materials, [PMID:] [10.1002/adhm.202504853] |