Home/Compounds/API/Methoxsalen

C₁₂H₈O₄

216.19 g/mol

APIWarning

Methoxsalen

CAS298-81-7EC206-066-9

Category

API

Compound Class

Heterocycle

Primary Use

Pharmaceutical Raw Material

Methoxsalen is a photosensitizing compound used in pharmaceutical manufacturing. It is combined with ultraviolet A radiation in research and clinical settings for repigmentation procedures.

pharmaceutical raw material for photosensitizer formulationsresearch compound for vitiligo and psoriasis studies

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.

Restricted or banned substances

Substances on this list are banned or restricted under the named regulation. This page is a compliance reference — verify your obligations under applicable law.

Relevant lists:California Proposition 65

CAS 298-81-7

Related Compounds

ReferenceSame Category

(5R,6R,9S)-Rimegepant

CAS2985337-95-7

pharmaceutical raw material

ReferenceSame Category

Ensifentrine (stereochemically undefined)

pharmaceutical raw material

ReferenceSame Category

9,10-Dimethoxy-2-(2,4,6-trimethylphenylimino)3-(2-aminoethyl)-3,4,6,7-tetrahydro-2H-pyrimido[6,1-a]isoquinolin-4-one

pharmaceutical raw material

ReferenceSame Category

Calcium gluconate

pharmaceutical raw material

Referencesame scaffold

Trioxsalen

pharmaceutical raw material

Referencesame scaffold

Psoralen

Naturally occurring organic compound

Referencesame scaffold

Bergamottin

pharmaceutical intermediate

Safety Reference

Harmful

Health Hazard

Warning

H302Harmful if swallowed

H317May cause an allergic skin reaction

H336May cause drowsiness or dizziness

H341Suspected of causing genetic defects

H350May cause cancer

H360May damage fertility or the unborn child

H372Causes damage to organs through prolonged or repeated exposure

H371May cause damage to organs

H373May cause damage to organs through prolonged or repeated exposure

Regulatory Compliance1

California Proposition 65USRegulation
Listed· listed since 1987-02-27Source

Customs Tariff Classification

The international HS code for Methoxsalen (CAS 298-81-7) is 2932.20.

HS code (international, 6-digit)

2932.20

EU CN code (8-digit)

2932 20 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

9-methoxyfuro[3,2-g]chromen-7-one

InChIKey

QXKHYNVANLEOEG-UHFFFAOYSA-N

SMILES

COC1=C2C(=CC3=C1OC=C3)C=CC(=O)O2

Synonyms (80)