2-Hydroxy-5-methylisophthalaldehyde - ≥97% , CAS No.7310-95-4

CAS: 7310-95-4 Cat. No.: H157420 Formula: C9H8O3 Molecular Weight: 164.16 EC Number: 230-768-4
AVAILABLE TO ORDER
GRADE & PURITY ≥97%
Synonyms
5-methyl-2-hydroxy-1,3-benzenedicarboxaldehyde | Esertia | 3-Formyl-5-methylsalicylaldehyde | NSC 243727 | NSC243727 | NSC-243727 | YSZC437 | InChI=1/C9H8O3/c1-6-2-7(4-10)9(12)8(3-6)5-11/h2-5,12H,1H | 1,3-Benzenedicarboxaldehyde, 2-hydroxy-5-methyl- | 11N
Storage
Store at 2-8°C,Argon charged
Shipped In
Wet ice
Size
USA
Germany (EU)*
Price
Qty
250mg
H157420-250mg
3 In stock
$9.90
1g
H157420-1g
2 In stock
$17.90
5g
H157420-5g
1 In stock
$66.90
25g
H157420-25g
Made to order · 8–12 wks
$329.90
Enter a quantity for the sizes you want to add.
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Why this grade

≥97% for sensitive chromatographic and analytical workflows requiring minimal baseline interference.

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Storage & shipping

Store at 2-8°C,Argon charged Ships Wet ice Check lot-specific COA for exact specifications.

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Quality documents

SDS, COA, datasheet, and spec sheet available for download. Lot-specific COA accessible via lot number lookup.

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Literature proof

Cited in 6 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.

Overview

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.

Specifications

Synonyms
5-methyl-2-hydroxy-1,3-benzenedicarboxaldehyde | Esertia | 3-Formyl-5-methylsalicylaldehyde | NSC 243727 | NSC243727 | NSC-243727 | YSZC437 | InChI=1/C9H8O3/c1-6-2-7(4-10)9(12)8(3-6)5-11/h2-5,12H,1H | 1,3-Benzenedicarboxaldehyde, 2-hydroxy-5-methyl- | 11N
Specifications & Purity
≥97%
Storage
Store at 2-8°C,Argon charged
Shipped In
Wet ice
This product requires cold chain shipping. Ground and other economy services are not available.
Purity
≥97%
Names and Identifiers
Pubchem Sid504755553
Pubchem Sid Urlhttps://pubchem.ncbi.nlm.nih.gov/substance/504755553
Canonical SmilesCC1=CC(=C(C(=C1)C=O)O)C=O
IUPAC Name2-hydroxy-5-methylbenzene-1,3-dicarbaldehyde
InChIKeyZBOUXALQDLLARY-UHFFFAOYSA-N
INCHI1S/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=

Documentation

📋 Safety Data Sheet (SDS)

Comprehensive hazard, handling, storage, and regulatory compliance document.

Download SDS →

✅ Certificate of Analysis (COA)

Lot-specific quality data. Enter your lot number to retrieve the exact COA.

Look up COA →

📊 Datasheet

Quick-reference summary of product specifications and applications.

View datasheet →

🔬 Specification Sheet

Full quality attributes and acceptance criteria for this grade.

View spec sheet →

Advanced Data

Taxonomic Classification

Taxonomy Tree

KingdomOrganic compounds
SuperclassOrganic oxygen compounds
ClassOrganooxygen compounds
SubclassCarbonyl compounds
Intermediate Tree Nodes Aldehydes - Aryl-aldehydes - Benzaldehydes
Direct ParentHydroxybenzaldehydes
Alternative Parents Para cresols  Benzoyl derivatives  Toluenes  Vinylogous acids  Organic oxides  Hydrocarbon derivatives  
Molecular FrameworkAromatic homomonocyclic compounds
Substituents Hydroxybenzaldehyde - P-cresol - Benzoyl - Toluene - Phenol - Benzenoid - Monocyclic benzene moiety - Vinylogous acid - Organic oxide - Hydrocarbon derivative - Aromatic homomonocyclic compound
DescriptionThis 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
3D Structure
Interactive Chemical Structure Model





Mechanisms of Action
Certificates(CoA,COO,BSE/TSE and Analysis Chart)
C of A & Other Certificates(BSE/TSE, COO):
Analytical Chart:

Find and download the COA for your product by matching the lot number on the packaging.

25 results found

Lot NumberCertificate TypeDateItem
E2629295Certificate of AnalysisMay 16, 2026 H157420
E2629296Certificate of AnalysisMay 16, 2026 H157420
E2629297Certificate of AnalysisMay 16, 2026 H157420
E2629332Certificate of AnalysisMay 16, 2026 H157420
D2323894Certificate of AnalysisFeb 04, 2026 H157420
K2505022Certificate of AnalysisNov 10, 2025 H157420
K2514661Certificate of AnalysisNov 03, 2025 H157420
K2514660Certificate of AnalysisNov 03, 2025 H157420
D2617031Certificate of AnalysisNov 03, 2025 H157420
K2514659Certificate of AnalysisNov 03, 2025 H157420
B2307278Certificate of AnalysisOct 30, 2025 H157420
D2008118Certificate of AnalysisOct 14, 2025 H157420
G2227912Certificate of AnalysisMay 09, 2025 H157420
G2227917Certificate of AnalysisMay 09, 2025 H157420
D2515670Certificate of AnalysisNov 15, 2024 H157420
D2515433Certificate of AnalysisNov 15, 2024 H157420
K2414277Certificate of AnalysisJul 08, 2024 H157420
K2414278Certificate of AnalysisJul 08, 2024 H157420
G2227911Certificate of AnalysisJun 11, 2022 H157420
G2227914Certificate of AnalysisJun 11, 2022 H157420
G2228188Certificate of AnalysisJun 11, 2022 H157420
G2228189Certificate of AnalysisJun 11, 2022 H157420
J2431163Certificate of AnalysisJun 11, 2022 H157420
G2227699Certificate of AnalysisJun 11, 2022 H157420
E2414039Certificate of AnalysisJun 11, 2022 H157420

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Chemical and Physical Properties
SensitivityAir Sensitive
Melt Point(°C)128-130°C
Molecular Weight164.160 g/mol
XLogP31.400
Hydrogen Bond Donor Count1
Hydrogen Bond Acceptor Count3
Rotatable Bond Count2
Exact Mass164.047 Da
Monoisotopic Mass164.047 Da
Topological Polar Surface Area54.400 Ų
Heavy Atom Count12
Formal Charge0
Complexity161.000
Isotope Atom Count0
Defined Atom Stereocenter Count0
Undefined Atom Stereocenter Count0
Defined Bond Stereocenter Count0
Undefined Bond Stereocenter Count0
The total count of all stereochemical bonds0
Covalently-Bonded Unit Count1
Citations of This Product
References
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]
Solution Calculators
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