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 6 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.
2-Hydroxy-5-methyl-1,3-benzenedicarboxaldehyde (2-hydroxy-5-methylisophthalaldehyde) is a dialdehyde derivative. It has been synthesized by heating p-cresol with hexamethylenetetramine. The structure has been confirmed by 1H and 13C NMR. It is an important raw material for the synthesis of various binucleating schiff base ligand.
| Pubchem Sid | 504755553 |
|---|---|
| Pubchem Sid Url | https://pubchem.ncbi.nlm.nih.gov/substance/504755553 |
| Canonical Smiles | CC1=CC(=C(C(=C1)C=O)O)C=O |
| IUPAC Name | 2-hydroxy-5-methylbenzene-1,3-dicarbaldehyde |
| InChIKey | ZBOUXALQDLLARY-UHFFFAOYSA-N |
| INCHI | 1S/C9H8O3/c1-6-2-7(4-10)9(12)8(3-6)5-11/h2-5,12H,1H3 |
| Isomeric SMILES | CC1=CC(=C(C(=C1)C=O)O)C=O |
| WGK Germany | 3 |
| Molecular Weight | 164.16 |
| Reaxy-Rn | 2043960 |
| Reaxys-RN_link_address | https://www.reaxys.com/reaxys/secured/hopinto.do?context=S&query=IDE.XRN=2043960&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 - Aryl-aldehydes - Benzaldehydes |
| Direct Parent | Hydroxybenzaldehydes |
| Alternative Parents | Para cresols Benzoyl derivatives Toluenes Vinylogous acids Organic oxides Hydrocarbon derivatives |
| Molecular Framework | Aromatic homomonocyclic compounds |
| Substituents | Hydroxybenzaldehyde - P-cresol - Benzoyl - Toluene - Phenol - Benzenoid - Monocyclic benzene moiety - Vinylogous acid - Organic oxide - Hydrocarbon derivative - Aromatic homomonocyclic compound |
| Description | This compound belongs to the class of organic compounds known as hydroxybenzaldehydes. These are organic aromatic compounds containing a benzene ring carrying an aldehyde group and a hydroxyl group. |
| 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 | May 16, 2026 | H157420 | |
| Certificate of Analysis | May 16, 2026 | H157420 | |
| Certificate of Analysis | May 16, 2026 | H157420 | |
| Certificate of Analysis | May 16, 2026 | H157420 | |
| Certificate of Analysis | Feb 04, 2026 | H157420 | |
| Certificate of Analysis | Nov 10, 2025 | H157420 | |
| Certificate of Analysis | Nov 03, 2025 | H157420 | |
| Certificate of Analysis | Nov 03, 2025 | H157420 | |
| Certificate of Analysis | Nov 03, 2025 | H157420 | |
| Certificate of Analysis | Nov 03, 2025 | H157420 | |
| Certificate of Analysis | Oct 30, 2025 | H157420 | |
| Certificate of Analysis | Oct 14, 2025 | H157420 | |
| Certificate of Analysis | May 09, 2025 | H157420 | |
| Certificate of Analysis | May 09, 2025 | H157420 | |
| Certificate of Analysis | Nov 15, 2024 | H157420 | |
| Certificate of Analysis | Nov 15, 2024 | H157420 | |
| Certificate of Analysis | Jul 08, 2024 | H157420 | |
| Certificate of Analysis | Jul 08, 2024 | H157420 | |
| Certificate of Analysis | Jun 11, 2022 | H157420 | |
| Certificate of Analysis | Jun 11, 2022 | H157420 | |
| Certificate of Analysis | Jun 11, 2022 | H157420 | |
| Certificate of Analysis | Jun 11, 2022 | H157420 | |
| Certificate of Analysis | Jun 11, 2022 | H157420 | |
| Certificate of Analysis | Jun 11, 2022 | H157420 | |
| Certificate of Analysis | Jun 11, 2022 | H157420 |
| Sensitivity | Air Sensitive |
|---|---|
| Melt Point(°C) | 128-130°C |
| Molecular Weight | 164.160 g/mol |
| XLogP3 | 1.400 |
| Hydrogen Bond Donor Count | 1 |
| Hydrogen Bond Acceptor Count | 3 |
| Rotatable Bond Count | 2 |
| Exact Mass | 164.047 Da |
| Monoisotopic Mass | 164.047 Da |
| Topological Polar Surface Area | 54.400 Ų |
| Heavy Atom Count | 12 |
| Formal Charge | 0 |
| Complexity | 161.000 |
| 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. Fuchu Gong, Wu Zou, Qinge Wang, Renxing Deng, Zhong Cao, Tingting Gu. (2019) Polymer nanoparticles integrated with excited-state intramolecular proton transfer-fluorescent modules as sensors for the detection of vitamin B1. MICROCHEMICAL JOURNAL, [PMID:] [10.1016/j.microc.2019.05.057] |
| 2. Wei Du, Mingxuan Zhou, Guancheng Wang, Mingze Lu, Xiao Wang, Zhirui Guo, Ming Ma, Yu Zhang. (2024) A HPRR-based diatomic catalyst electrochemical biosensor for detecting cancer-related extracellular vesicles. Analytical Methods, [PMID:39351967] [10.1039/D4AY01573H] |
| 3. Zhang Zhen, Xing Zhenyu, Luo Xianglin, Cheng Chong, Liu Xikui. (2025) Densely populated macrocyclic dicobalt sites in ladder polymers for low-overpotential oxygen reduction catalysis. Nature Communications, 16 (1): (1-12). [PMID:39843455] [10.1038/s41467-025-56066-8] |
| 4. Wang Jing, Li Shuangbao, Ren Lu, Wang Zian, Liu Yanqi, Zhang Dawei. (2025) The turn-off fluorescent chemical sensor based on imidazole structure for highly selective and accurate detection of Cu2+ ion in living cells. RESEARCH ON CHEMICAL INTERMEDIATES, [PMID:] [10.1007/s11164-025-05725-y] |
| 5. Lu Ren, Jing Wang, Xiangchun Meng, Chang Liu, Ziyi Liao, Dawei Zhang. (2025) A turn-off fluorescent chemical sensor based on Bis-imidazole structure for highly selective and accurate detection of Cu2+ in living cells. INORGANICA CHIMICA ACTA, [PMID:] [10.1016/j.ica.2025.122705] |
| 6. Ruite Gu, Tingyu Yan, Zeyu Hao, Huanlu Tu, Shansheng Yu, Xiaoying Hu, Hongwei Tian. (2026) Construction of schiff base-structured cobalt coordination polymers on Fe-N-C surfaces for high-efficiency ORR catalysts. JOURNAL OF POWER SOURCES, [PMID:] [10.1016/j.jpowsour.2026.241061] |