4-Methylpicolinic acid
Also known as: 4-Methyl-2-pyridinecarboxylic acid, 4-Methylpyridine-2-carboxylic acid, 4-METHYL-PYRIDINE-2-CARBOXYLIC ACID, 4-METHYLPICOLINIC ACID, 2-Pyridinecarboxylic acid, 4-methyl-, 2-Carboxy-4-methylpyridine, RARECHEM AL BO 2389
4-Methylpicolinic acid (CAS 4021-08-3) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C7H7NO2 and a molecular weight of 137.136 g/mol. Key properties include a melting point of 137-141 °C, a boiling point of 307.4±22.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 139.7±22.3 °C. It is classified under GHS with signal word Warning and hazard statements H319 — Causes serious eye irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 4021-08-3
- Jingsj CID
- J-39632-7
- Molecular Formula
- C7H7NO2
- Molecular Weight
- 137.136 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 137-141 °C |
|---|---|
| Boiling Point | 307.4±22.0 °C at 760 mmHg |
| Density | 1.2±0.1 g/cm3 |
| Flash Point | 139.7±22.3 °C |
| Exact Mass | 137.047684 |
| PSA | 50.19000 |
| LogP | 0.36 |
| Vapor Pressure | 0.0±0.7 mmHg at 25°C |
| Refractive Index | 1.561 |
GHS Safety & Compliance
- H319 — Causes serious eye 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 4-Methylpicolinic acid?
The CAS number of 4-Methylpicolinic acid is 4021-08-3.
What are the molecular formula and molecular weight of 4-Methylpicolinic acid?
4-Methylpicolinic acid has molecular formula C7H7NO2 and molecular weight 137.136 g/mol.
Is 4-Methylpicolinic acid hazardous?
4-Methylpicolinic acid has GHS signal word Warning and hazard statements H319 — Causes serious eye irritation.
What are the upstream and downstream products of 4-Methylpicolinic acid?
For 4-Methylpicolinic acid, Upstream Products: 4-Methyl-2-pyridinecarbonitrile, 2-(Bromomethyl)-4-methylpyridine, 2,4-Lutidine; Downstream Products: 4-Methylpyridine, Ethyl 4-methylpicolinate, Methyl 4-methylpicolinate.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "4-Methylpicolinic acid (CAS 4021-08-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-39632-7 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.