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CAS 139-85-5

CAS 139-85-5 matches 0 EU annex records across Annex II–VI of Regulation 1223/2009.

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Chemical identity and properties

PubChem 2D chemical structure for CAS 139-85-5
CAS 139-85-5PubChem CID 8768

3,4-Dihydroxybenzaldehyde

3,4-dihydroxybenzaldehyde is a dihydroxybenzaldehyde. — ChEBI

IUPAC name
3,4-dihydroxybenzaldehyde
Molecular formula
C7H6O3
Molecular weight
138.12 g/mol
Exact mass
138.031694049 Da
XLogP3
1.3
Topological polar surface area
57.5 Ų
Hydrogen-bond donors
2
Hydrogen-bond acceptors
3
Covalent units
1
Defined stereocentres
0

Also known as

ProtocatechualdehydePROTOCATECHUIC ALDEHYDERancinamycin IV4-Formyl-1,2-dihydroxybenzene3,4-Dihydroxybenzenecarbonal4PVP2HCH4TCHEBI:50205NSC-22961
16 more reported names
GM-W03RefChem:45419O HUI WHITE EXTREME CELLIGHT205-377-7Benzaldehyde, 3,4-dihydroxy-catechaldehyde3,4-dihydroxy-benzaldehyde4-Formyl-1,2-benzenediol1,2-Dihydroxy-4-formylbenzene3,4-dihydroxy benzaldehydeprotocatechuicaldehydeTadalafil Impurity 5UNII-4PVP2HCH4TNSC 229614,5-Dihydroxybenzaldehyde3,4-DHBAOP
Open full PubChem recordPubChem annotations3D structure image
External database identifiers

Retrieved from NIH PubChem on 2026-08-31 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.

Records for CAS 139-85-5

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No records found for this CAS number.

How CAS 139-85-5 is used on this site

CAS 139-85-5 is the Chemical Abstracts Service identifier used to pin this page to a specific substance. In the current dataset, 0 EU annex records share this identifier, which helps you cross-check whether the same substance appears under one regulatory context or several.

Use this page when a supplier specification, SDS or raw-material dossier gives you CAS 139-85-5 and you need to see every linked Annex II–VI record in one place. The entry cards above are the quickest route to concentration limits, warnings, annex placement and product-type conditions.