Methyl 2-aminothiophene-3-carboxylate
Also known as: Methyl 2-amino-3-thenoate, Methyl 2-amino-3-thiophenecarboxylate, 2-Amino-3-carbomethoxythiophene, 2-Amino-3-methoxycarbonylthiophene, 3-Thiophenecarboxylic acid, 2-amino-, methyl ester, 2-Amino-thiophene-3-carboxylic acid methyl ester
Methyl 2-aminothiophene-3-carboxylate (CAS 4651-81-4) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C6H7NO2S and a molecular weight of 157.190 g/mol. Key properties include a melting point of 76-81 °C(lit.), a boiling point of 259.5±20.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 110.7±21.8 °C. 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.
- 4651-81-4
- Jingsj CID
- J-1994072-8
- Molecular Formula
- C6H7NO2S
- Molecular Weight
- 157.190 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 76-81 °C(lit.) |
|---|---|
| Boiling Point | 259.5±20.0 °C at 760 mmHg |
| Density | 1.3±0.1 g/cm3 |
| Flash Point | 110.7±21.8 °C |
| Exact Mass | 157.019745 |
| PSA | 80.56000 |
| LogP | 2.35 |
| Vapor Pressure | 0.0±0.5 mmHg at 25°C |
| Refractive Index | 1.598 |
GHS Safety & Compliance
- H315 — Causes skin irritation
- H319 — Causes serious eye irritation
- H335 — May cause respiratory irritation
Customs & Trade Information
| HS Code | 2934999090 |
|---|---|
| Summary | 2934999090. other heterocyclic compounds. 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 Methyl 2-aminothiophene-3-carboxylate?
The CAS number of Methyl 2-aminothiophene-3-carboxylate is 4651-81-4.
What are the molecular formula and molecular weight of Methyl 2-aminothiophene-3-carboxylate?
Methyl 2-aminothiophene-3-carboxylate has molecular formula C6H7NO2S and molecular weight 157.190 g/mol.
Is Methyl 2-aminothiophene-3-carboxylate hazardous?
Methyl 2-aminothiophene-3-carboxylate 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 Methyl 2-aminothiophene-3-carboxylate?
For Methyl 2-aminothiophene-3-carboxylate, Upstream Products: 1,4-Dithiane-2,5-diol, Methyl cyanoacetate, ch3cho; Downstream Products: 1H-Pyrazolo[3,4-c]pyridazin-3(2H)-one, thieno[2,3-d]pyrimidine-2,4-diol, 2,4-Dichlorothieno[2,3-d]pyrimidine.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Methyl 2-aminothiophene-3-carboxylate (CAS 4651-81-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1994072-8 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.