Molekula
Ethyl 3,4-dihydroxybenzoate (Protocatechuic acid ethyl ester)
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 2000 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
Ethyl 3,4-dihydroxybenzoate, also called protocatechuic acid ethyl ester, is an organic ester derived from protocatechuic acid, commonly used in pharmaceutical research, flavor and fragrance synthesis, and as an intermediate in organic chemistry. It appears as a white to off-white crystalline solid with applications in studying metabolic pathways and developing bioactive compounds. This chemical has a CAS number of 3943-89-3, a molecular formula of (HO)2C6H3CO2C2H5, and a molecular weight of 182.17 g/mol. It should be stored at ambient conditions. The product carries a **Danger** signal word due to its hazardous properties. Molekula supplies Ethyl 3,4-dihydroxybenzoate from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
Pack sizes & pricing
Pricing on request — packs available from research to bulk quantities.
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Specifications
| Property | Value |
|---|---|
| Appearance | Off-white crystalline powder |
| Melting Point | 133 - 137℃ |
| Loss on Drying | ≤1.0% |
| Assay (HPLC) | ≥99.0% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
Identification
| Property | Value |
|---|---|
| SKU | 12713773 |
| CAS Number | 3943-89-3 |
| Molecular Formula | (HO)2C6H3CO2C2H5 |
| Molecular Weight | 182.17 |
| SMILES | CCOC(=O)C1=CC(=C(C=C1)O)O |
| REACH Code | Y110 |
| HTS Code | 29182965 |
| Tariff Code | 2918290090 |
Safety & GHS
-
Corrosive
GHS05
-
Health Hazard
GHS07
Hazard statements
- H315 Causes skin irritation
- H317 May cause an allergic skin reaction
- H318 Causes serious eye damage
- H335 May cause respiratory irritation
Precautionary statements
- P261 Avoid breathing dust/fume/gas/mist/vapours/spray
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P302+352 IF ON SKIN: Wash with soap and water
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
- P310 Immediately call a POISON CENTER or doctor/physician
Documents
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Synonyms
No alternate names recorded for this product.
Frequently asked questions
What is Ethyl 3,4-dihydroxybenzoate (Protocatechuic acid ethyl ester) commonly used for?
It is primarily used as an intermediate in organic synthesis, including the production of pharmaceuticals, agrochemicals, and fragrances, as well as a building block for polymers.
What is the chemical formula and molecular weight of this compound?
The chemical formula is **(HO)₂C₆H₃CO₂C₂H₅**, and the molecular weight is **182.17 g/mol**.
How should Ethyl 3,4-dihydroxybenzoate be stored?
Store in a tightly sealed container at **ambient temperature**, away from moisture and direct sunlight.
What grades or purities are available for this product?
Molekula supplies this compound in **technical grade and high-purity (98%+) forms**—confirm availability for your specific needs.
Can Molekula supply this compound in bulk quantities?
Yes, we offer bulk quantities upon request—contact our sales team for pricing and lead times.
What documentation comes with an order of this chemical?
Each order includes a **Certificate of Analysis (CoA)**, Material Safety Data Sheet (MSDS), and batch-specific documentation.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.