ChemAbout

ChemAbout is a B2B platform where chemical buyers and suppliers discover each other.

Post a purchase requestList your products (for suppliers)
© 2026 ChemAbout
Compound Index|Demand Board|Insights|Exhibitions|Compliance|Help Center|Privacy Policy|Terms of Service|[email protected]
Home/Compounds/Pharmaceutical Intermediate/Isovanillic acid
C8H8O4
168.15 g/mol
Pharmaceutical IntermediateWarning

3-HYDROXY-4-METHOXYBENZOIC ACID

CAS645-08-9EC211-430-5
Category
Pharmaceutical Intermediate
Compound Class
Organic Acid
Primary Use
Pharmaceutical Intermediate

3-Hydroxy-4-methoxybenzoic acid is a methoxybenzoic acid with a hydroxy substituent at position 3. It functions as an antibacterial agent and a plant metabolite, and is used as a pharmaceutical intermediate in manufacturing and research.

Antibacterial agentPlant metabolitePharmaceutical intermediate

Content scope: Information here supports chemical identification and industrial supply, research, and manufacturing contexts. It is not a therapeutic claim, medical advice, or drug-use instructions.

Sourcing 3-HYDROXY-4-METHOXYBENZOIC ACID?

Post a free purchase request — no account needed. It reaches suppliers of this product, and replies go straight to your inbox.

Post a Purchase Request→Supplier? List your product for this CAS→

Related Compounds

SimilarStructure SimilarSimilarity 0.72

Vanillic acid

CAS121-34-6

Flavoring agent and flavor intermediate

ReferenceSame Category

Hydrocinnamoyl chloride

CAS645-45-4

pharmaceutical intermediate

ReferenceSame Category

Tert-Butyl [(1S,3S)-3-aminocyclopentyl]carbamate

CAS645400-44-8

pharmaceutical intermediate

ReferenceSame Category

4-Piperidinemethanol

CAS6457-49-4

pharmaceutical intermediate

ReferenceSame Category

Tert-Butyl 2,6-diazaspiro[4.4]nonane-2-carboxylate

CAS646055-63-2

pharmaceutical intermediate

Safety Reference

Harmful
Harmful
Warning
H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation

Customs Tariff Classification

The international HS code for 3-HYDROXY-4-METHOXYBENZOIC ACID (CAS 645-08-9) is 2918.99.

HS code (international, 6-digit)

2918.99

EU CN code (8-digit)

2918 99 90

Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.

Identifiers
IUPAC Name

3-hydroxy-4-methoxybenzoic acid

InChIKey

LBKFGYZQBSGRHY-UHFFFAOYSA-N

SMILES

COC1=C(C=C(C=C1)C(=O)O)O

Synonyms (12)
  • 3-Hydroxy-p-anisic acid
  • 3-Hydroxyanisic acid
  • Acide isovanillique
  • Isovanillic acid
  • Mebeverine Impurity 28
  • lsovanillic acid
  • p-Anisic acid, 3-hydroxy-

Sourcing 3-HYDROXY-4-METHOXYBENZOIC ACID?

Post a free purchase request — no account needed. It reaches suppliers of this product, and replies go straight to your inbox.

Post a Purchase Request→Supplier? List your product for this CAS→