3-hydroxy-phthalicanhydrid - ≥97% , CAS No.37418-88-5

CAS: 37418-88-5 Cat. No.: H176307 Molecular Weight: 164.12 EC Number: 626-257-4
AVAILABLE TO ORDER
GRADE & PURITY ≥97%
Synonyms
3-Hydroxyphthalic anhydride, 98% | AMY19150 | 5-18-03-00184 (Beilstein Handbook Reference) | STK930474 | hydroxyphthalic anhydride | MFCD00011557 | BBL036792 | 4-HYDROXY-1,3-ISOBENZOFURANDIONE | BCP15658 | 2-(2-METHOXYPHENYL)4,4,5,5-TETRAMETHYL-1,3,2-DIOX
Storage
Room temperature,Argon charged
Shipped In
Normal
 ·  off list, applied to all prices below.
Size
Status
Price
Qty
1g
H176307-1g
3
$9.90
5g
H176307-5g
2
$33.90
25g
H176307-25g
1
$149.90
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.

🌡

Storage & shipping

Room temperature,Argon charged Ships Normal 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 0 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.

Specifications

Synonyms
3-Hydroxyphthalic anhydride, 98% | AMY19150 | 5-18-03-00184 (Beilstein Handbook Reference) | STK930474 | hydroxyphthalic anhydride | MFCD00011557 | BBL036792 | 4-HYDROXY-1, 3-ISOBENZOFURANDIONE | BCP15658 | 2-(2-METHOXYPHENYL)4, 4, 5, 5-TETRAMETHYL-1, 3, 2-DIOX
Specifications & Purity
≥97%
Storage
Room temperature, Argon charged
Shipped In
Normal
Purity
≥97%
Names and Identifiers
Pubchem Sid488187007
Pubchem Sid Urlhttps://pubchem.ncbi.nlm.nih.gov/substance/488187007
Canonical SmilesC1=CC2=C(C(=C1)O)C(=O)OC2=O
IUPAC Name4-hydroxy-2-benzofuran-1,3-dione
InChIKeyCCTOEAMRIIXGDJ-UHFFFAOYSA-N
INCHI1S/C8H4O4/c9-5-3-1-2-4-6(5)8(11)12-7(4)10/h1-3,9H
Isomeric SMILES C1=CC2=C(C(=C1)O)C(=O)OC2=O
Molecular Weight 164.12
Reaxy-Rn 135783
Reaxys-RN_link_address https://www.reaxys.com/reaxys/secured/hopinto.do?context=S&query=IDE.XRN=135783&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.

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📊 Datasheet

Quick-reference summary of product specifications and applications.

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🔬 Specification Sheet

Full quality attributes and acceptance criteria for this grade.

View spec sheet →

Advanced Data

Taxonomic Classification

Taxonomy Tree

KingdomOrganic compounds
SuperclassOrganoheterocyclic compounds
ClassBenzofurans
SubclassBenzofuranones
Intermediate Tree Nodes Not available
Direct ParentPhthalic anhydrides
Alternative Parents Isobenzofuranones  1-hydroxy-4-unsubstituted benzenoids  1-hydroxy-2-unsubstituted benzenoids  Dicarboxylic acids and derivatives  Vinylogous acids  Carboxylic acid anhydrides  Oxacyclic compounds  Organooxygen compounds  Organic oxides  Hydrocarbon derivatives  
Molecular FrameworkAromatic heteropolycyclic compounds
Substituents Phthalic_anhydride - Phthalic anhydride - Isobenzofuranone - Isocoumaran - 1-hydroxy-4-unsubstituted benzenoid - 1-hydroxy-2-unsubstituted benzenoid - Dicarboxylic acid or derivatives - Benzenoid - Carboxylic acid anhydride - Vinylogous acid - Carboxylic acid derivative - Oxacycle - Hydrocarbon derivative - Organic oxide - Organooxygen compound - Organic oxygen compound - Aromatic heteropolycyclic compound
DescriptionThis compound belongs to the class of organic compounds known as phthalic anhydrides. These are compounds containing a phthalic anhydride moiety (or a derivative thereof), which consists of a benzene fused to a furan-1,3-dione.
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.

13 results found

Lot NumberCertificate TypeDateItem
E2622406Certificate of AnalysisApr 20, 2026 H176307
E2622409Certificate of AnalysisApr 20, 2026 H176307
J2213646Certificate of AnalysisApr 07, 2026 H176307
J2213728Certificate of AnalysisApr 07, 2026 H176307
J2213729Certificate of AnalysisApr 07, 2026 H176307
K2307163Certificate of AnalysisAug 12, 2025 H176307
C2524298Certificate of AnalysisMar 11, 2025 H176307
D2508790Certificate of AnalysisMar 11, 2025 H176307
D2508791Certificate of AnalysisMar 11, 2025 H176307
J2213670Certificate of AnalysisJul 12, 2024 H176307
I2406202Certificate of AnalysisOct 20, 2023 H176307
K2307169Certificate of AnalysisOct 20, 2023 H176307
K2307170Certificate of AnalysisOct 20, 2023 H176307

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Chemical and Physical Properties
SensitivityMoisture sensitive
Melt Point(°C)199-202 °C
Molecular Weight164.110 g/mol
XLogP31.500
Hydrogen Bond Donor Count1
Hydrogen Bond Acceptor Count4
Rotatable Bond Count0
Exact Mass164.011 Da
Monoisotopic Mass164.011 Da
Topological Polar Surface Area63.600 Ų
Heavy Atom Count12
Formal Charge0
Complexity235.000
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
Solution Calculators
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