5-Methoxynicotinic acid
Also known as: 5-Methoxypyridine-3-carboxylic acid, 3-Methoxy-5-pyridinecarboxylic acid, 3-Methoxypyridine-5-carboxylic acid, 3-Pyridinecarboxylic acid, 5-methoxy-, 5-METHOXY-NICOTINIC ACID, 5-Methoxy-nicotinic acid, 5-Methoxy-nicotinsaeure, 5-methoxy-3-pyridinecarboxylic acid
5-Methoxynicotinic acid (CAS 20826-03-3) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C7H7NO3 and a molecular weight of 153.13500 g/mol. Key properties include a melting point of 127-131°C, a boiling point of 330.9ºC at 760 mmHg, a density of 1.284g/cm3 and a flash point of 154ºC. It is classified under GHS with signal word Warning and hazard statements H315 — Causes skin irritation, H319 — Causes serious eye irritation and H335 — May cause respiratory irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 20826-03-3
- Jingsj CID
- J-1377771-4
- Molecular Formula
- C7H7NO3
- Molecular Weight
- 153.13500 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 127-131°C |
|---|---|
| Boiling Point | 330.9ºC at 760 mmHg |
| Density | 1.284g/cm3 |
| Flash Point | 154ºC |
| Exact Mass | 153.04300 |
| PSA | 59.42000 |
| LogP | 0.78840 |
| Vapor Pressure | 6.43E-05mmHg at 25°C |
| Refractive Index | 1.549 |
GHS Safety & Compliance
- H315 — Causes skin irritation
- H319 — Causes serious eye irritation
- H335 — May cause respiratory irritation
Customs & Trade Information
| HS Code | 2933399090 |
|---|---|
| Summary | 2933399090. other compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0% |
Frequently Asked Questions
What is the CAS number of 5-Methoxynicotinic acid?
The CAS number of 5-Methoxynicotinic acid is 20826-03-3.
What are the molecular formula and molecular weight of 5-Methoxynicotinic acid?
5-Methoxynicotinic acid has molecular formula C7H7NO3 and molecular weight 153.13500 g/mol.
Is 5-Methoxynicotinic acid hazardous?
5-Methoxynicotinic acid has GHS signal word Warning and hazard statements H315 — Causes skin irritation; H319 — Causes serious eye irritation; H335 — May cause respiratory irritation.
What are the upstream and downstream products of 5-Methoxynicotinic acid?
For 5-Methoxynicotinic acid, Upstream Products: methyl 5-methoxypyridine-3-carboxylate, Methyl 5-hydroxynicotinate; Downstream Products: 5-Methoxynicotinonitrile.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "5-Methoxynicotinic acid (CAS 20826-03-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1377771-4 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.