Ethyl 3,4-Dihydroxybenzoate

Name: Ethyl 3,4-Dihydroxybenzoate
Brand: Vaqora Chemicals
SKU: VQ-025582

About Ethyl 3,4-Dihydroxybenzoate

Vaqora Chemicals supplies Ethyl 3,4-Dihydroxybenzoate, an impurity of Erlotinib registered under CAS number 3943-89-3. The compound has the formula C9H10O4, corresponding to a molecular weight of 182.17 g/mol. It is also known as Ethyl protocatechuate or Protocatechuic acid ethyl ester.

The product is provided as a solid. Keep the vial tightly closed, protected from light and humidity, at the temperature stated on the Certificate of Analysis. It carries the GHS signal word “Warning” with 3 hazard statements. Review the Safety Data Sheet before use.

This Erlotinib impurity supports analytical method development and validation (AMV), batch release testing and the impurity sections of ANDA and DMF filings. It is used across pharmaceutical manufacturing and academic and industrial research.

We offer Ethyl 3,4-Dihydroxybenzoate in 10 mg, 25 mg, 50 mg and 100 mg packs with a batch-specific COA, and ship to customers worldwide.

Typical applications

Analytical method development
Method validation (AMV)
QC release testing
ANDA / DMF filings

Industries

Related to Erlotinib

View every impurity, metabolite and intermediate we list for Erlotinib.

Erlotinib impurities

Specifications & identifiers

Chemical identifiers
Product name	Ethyl 3,4-Dihydroxybenzoate
Catalogue No.	VQ-025582
CAS Number	3943-89-3
IUPAC name	ethyl 3,4-dihydroxybenzoate
Molecular formula	C₉H₁₀O₄
Molecular weight	182.17 g/mol
Exact mass	182.0579
Grade	Reference Standard
HSN code	38229090
InChIKey	KBPUBCVJHFXPOC-UHFFFAOYSA-N
SMILES	CCOC(=O)C1=CC(=C(C=C1)O)O
PubChem CID	77547

Physical properties
Physical form	Solid
LogP (XLogP3)	1.8
H-bond donors / acceptors	2 / 4
TPSA	66.8 Å²
Synonyms	Ethyl protocatechuate, Protocatechuic acid ethyl ester, 3,4-Dihydroxybenzoic Acid Ethyl Ester, Benzoic acid, 3,4-dihydroxy-, ethyl ester, 3,4-Dihydroxy-benzoic acid ethyl ester, Protocatechuic acid, ethyl ester, 3,4-Dihydroxybenzoic acid, ethyl ester, Benzoic acid,4-dihydroxy-, ethyl ester

Safety & hazard information (GHS)

Harmful / irritant

Signal word: Warning

Hazard statements

H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation

Precautionary statements: P261, P264, P264 + P265, P271, P280, P302 + P352, P304 + P340, P305 + P351 + P338, P319, P321, P332 + P317, P337 + P317, P362 + P364, P403 + P233, P405, P501

Classification is indicative (aggregated GHS notifications) and may vary by grade and concentration. Always refer to the SDS supplied with your lot.

Documents

Safety Data Sheet (SDS)16-section GHS · on request Certificate of AnalysisTypical / batch COA · on request Specification sheetTDS / MOA · on request

Frequently asked questions

What is the CAS number of Ethyl 3,4-Dihydroxybenzoate?

The CAS Registry Number of Ethyl 3,4-Dihydroxybenzoate is 3943-89-3. It is also known as Ethyl protocatechuate, Protocatechuic acid ethyl ester, 3,4-Dihydroxybenzoic Acid Ethyl Ester.

What is the molecular formula and molecular weight of Ethyl 3,4-Dihydroxybenzoate?

Ethyl 3,4-Dihydroxybenzoate has the molecular formula C9H10O4 and a molecular weight of 182.17 g/mol. Its IUPAC name is ethyl 3,4-dihydroxybenzoate.

What is Ethyl 3,4-Dihydroxybenzoate used for?

Ethyl 3,4-Dihydroxybenzoate is supplied as a characterised reference material related to Erlotinib. It is used for analytical method development and validation (AMV), impurity profiling, stability studies and quality control, and in ANDA/DMF regulatory filings.

Which grade and pack sizes of Ethyl 3,4-Dihydroxybenzoate can I order?

We supply Ethyl 3,4-Dihydroxybenzoate in Reference Standard grade, in 10 mg, 25 mg, 50 mg, 100 mg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with Ethyl 3,4-Dihydroxybenzoate?

Yes. Every lot of Ethyl 3,4-Dihydroxybenzoate is shipped with a batch-specific Certificate of Analysis, and a 16-section GHS Safety Data Sheet is provided with the quotation and the shipment.

Can Ethyl 3,4-Dihydroxybenzoate be shipped internationally?

Yes. Ethyl 3,4-Dihydroxybenzoate is classified as hazardous, so it is packed in UN-approved packaging and shipped as dangerous goods under IATA/IMDG rules. We export worldwide on EXW, FOB, CIF and DAP terms.