C7H6O4
154.12 g/mol
OtherWarning
3,4-DIHYDROXYBENZOIC ACID
CAS99-50-3EC202-760-0
Category
Other
Compound Class
n.a
Primary Use
research reagent
3,4-Dihydroxybenzoic acid is a naturally occurring phenolic acid found in wheat grains and many other plants. It is also used as a matrix compound in synthetic polymer MALDI mass spectrometry.
matrix compound for MALDI mass spectrometry
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.
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Related Compounds
ReferenceSame Category
6-Aminomethylquinoline
CAS99071-54-2
research reagent
ReferenceSame Category
6-Fluoro-3,4-dihydro-2-oxiranyl-2H-1-benzopyran
CAS99199-90-3
research intermediate
ReferenceSame Category
Val-pro-val-glu-ala-val-asp-pro-met
CAS99291-20-0
research peptide
ReferenceSame Category
6-bromo-1,3-dihydro-2H-indol-2-one
CAS99365-40-9
Research reagent
Safety Reference
Warning
H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation
Customs Tariff Classification
The international HS code for 3,4-DIHYDROXYBENZOIC ACID (CAS 99-50-3) is 2918.29.
HS code (international, 6-digit)
2918.29
EU CN code (8-digit)
2918 29 00
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
3,4-dihydroxybenzoic acid
InChIKey
YQUVCSBJEUQKSH-UHFFFAOYSA-N
SMILES
C1=CC(=C(C=C1C(=O)O)O)O
Synonyms (37)
- Protocatechuic acid, United States Pharmacopeia (USP)
- 1ykp
- 3,4-DIHYDROXYBENZOIC ACID
- 3,4-Dihydroxybenzoate, VIII
- 3,4-dihodroxybenzoic acid
- 3,4-dihydoxy benzoic acid
- 3,4-dihydrobenzonic acid
- 4,5-Dihydroxybenzoic acid
- 4fht
- Benzoic acid, 3,4-dihydroxy-
- Carbohydroquinonic acid
- Catechol-4-carboxylic Acid
- DIHYDROXYBENZOIC ACID, 3,4-
- PROTOCATECHOIC ACID
- PROTOCATECHUIC ACID (PCA)
- ProtocatechicAcid
- Protocatechuic acid (M1)
- Protocatehuic acid
- b-Resorcylate
- b-resorcylic acid
- beta-Resorcylate
- procatechuic acid
- protocatechuate
- protocatechuic acid
- protocatechulic acid
- protoeatechuic acid
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