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CAS 100-09-4

CAS 100-09-4 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 100-09-4
CAS 100-09-4PubChem CID 7478

4-Methoxybenzoic Acid

4-methoxybenzoic acid is a methoxybenzoic acid substituted with a methoxy group at position C-4. It has a role as a plant metabolite. It is functionally related to a benzoic acid. It is a conjugate acid of a 4-methoxybenzoate. — ChEBI

IUPAC name
4-methoxybenzoic acid
Molecular formula
C8H8O3
Molecular weight
152.15 g/mol
Exact mass
152.047344113 Da
XLogP3
2.0
Topological polar surface area
46.5 Ų
Hydrogen-bond donors
1
Hydrogen-bond acceptors
3
Covalent units
1
Defined stereocentres
0

Also known as

p-Anisic acidp-Methoxybenzoic acidDraconic acidBenzoic acid, 4-methoxy-4-Anisic acidANISIC ACID, PARApara-anisic acid4SB6Y7DMM3
16 more reported names
NSC-32742FEMA NO. 3945CHEBI:40813RefChem:44617202-818-5ANISIC ACID1335-08-6P-Methoxy Benzoic Acid4-Methoxy benzoic acidMethoxybenzoic acidKyselina 4-methoxybenzoova4-methoxy-benzoic acid4-Methoxybenzoic acid;Draconic acidp-anisatep-methoxybenzoateANN
Open full PubChem recordPubChem annotations3D structure image
External database identifiers

Evidence from additional scientific databases

EMBL-EBI ChEBI
Exact identifier matchCHEBI:40813

4-methoxybenzoic acid

A methoxybenzoic acid substituted with a methoxy group at position C-4.

Formula
C8H8O3
Average mass
152.149 g/mol
Monoisotopic mass
152.04734 Da
Formal charge
0
  • methoxybenzoic acid — is a (CHEBI:25238)
  • plant metabolite — has role (CHEBI:76924)
  • benzoic acid — has functional parent (CHEBI:30746)
  • plant metabolite — has role (CHEBI:76924)
  • methoxybenzoic acid — is a (CHEBI:25238)
  • 4-methoxybenzoate — is conjugate acid of (CHEBI:16639)
Additional curated names
4-methoxybenzoic acid4-Anisic acid4-Methoxybenzoic acid4-METHOXYBENZOIC ACIDanisic aciddraconic acidp-anisic acidp-methoxybenzoic acid
Cross-references from this source
  • CAS: 100-09-4 — ChemIDplus
  • CAS: 100-09-4 — ChemIDplus
  • CAS: 100-09-4 — NIST Chemistry WebBook
  • CAS: 100-09-4 — KEGG COMPOUND
  • CAS: 1335-08-6 — ChemIDplus
  • REGISTRY_NUMBER: 3499 — Gmelin
  • REGISTRY_NUMBER: 508910 — Reaxys
  • REGISTRY_NUMBER: 508910 — Beilstein
  • MANUAL_X_REF: ANN — PDBeChem
  • MANUAL_X_REF: C00029536 — KNApSAcK
  • MANUAL_X_REF: C02519 — KEGG COMPOUND
  • MANUAL_X_REF: CPD-1076 — MetaCyc
  • MANUAL_X_REF: DB02795 — DrugBank
  • MANUAL_X_REF: HMDB0001101 — HMDB
  • MANUAL_X_REF: P-Anisic_acid — Wikipedia

Mapped by: Exact CAS cross-reference in the ChEBI compound record. Source updated: 2015-10-23. Retrieved: 2026-08-31. Open source record

NIH PubChem PUG-View
Exact identifier match7478

Attributed physical-property, hazard, environmental and use annotations.

  • Note: This chemical does not meet GHS hazard criteria for 57% (172 of 302) of all reports. Source: European Chemicals Agency (ECHA)
  • Signal: Warning Source: European Chemicals Agency (ECHA)
  • GHS Hazard Statements: H302 (38.4%): Harmful if swallowed [Warning Acute toxicity, oral]; H315 (43%): Causes skin irritation [Warning Skin corrosion/irritation]; H319 (40.4%): Causes serious eye irritation [Warning Serious eye damage/eye irritation]; H335 (17.5%): May cause respiratory irritation [Warning Specific target organ toxicity, single exposure; Respiratory tract irritation] Source: European Chemicals Agency (ECHA)
  • Precautionary Statement Codes: P261, P264, P264+P265, P270, P271, P280, P301+P317, P302+P352, P304+P340, P305+P351+P338, P319, P321, P330, P332+P317, P337+P317, P362+P364, P403+P233, P405, and P501 (click each P-code to see the statement) Source: European Chemicals Agency (ECHA)
  • ECHA C&L Notifications Summary: Aggregated GHS information provided per 302 reports by companies from 15 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.; Reported as not meeting GHS hazard criteria per 172 of 302 reports by companies.; There are 14 notifications provided by 130 of 302 reports by companies with hazard statement code(s).; Information may vary between notifications depending on impurities, additives, and other factors. The percentage value in parenthesis indicates the notified classification ratio from companies that provide hazard codes. Only hazard codes with percentage values above 10% are shown. For more detailed information, please visit ECHA C&L website. Source: European Chemicals Agency (ECHA)

Mapped by: Existing checksum-valid CAS to unique PubChem CID match. Retrieved: 2026-08-31. Open source record

Scientific classifications and hazard annotations provide context and do not replace the market-specific regulatory decision shown above.

Additional source coverage and match status
SourceResultChecked
EMBL-EBI ChEBIExact match2026-08-31
NIH PubChem PUG-ViewExact match2026-08-31

A recorded no-match is useful evidence that the source was checked; it is not a claim that the substance does not exist elsewhere.

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 100-09-4

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How CAS 100-09-4 is used on this site

CAS 100-09-4 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 100-09-4 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.