4-Amino-2,3,5,6-tetrafluoropyridine

4-氨基-2,3,5,6-四氟吡啶

Also known as: 2,3,5,6-Tetrafluoropyridin-4-amine, 4-Aminotetrafluoropyridine, 2,3,5,6-Tetrafluoro-4-pyridinamine, 4-Pyridinamine, 2,3,5,6-tetrafluoro-, 4-AMINO-2,3,5,6-TETRAFLUOROPYRIDINE, 4-AMINO-2,3,5,6-TETRAFLUORROPYRIDINE

4-Amino-2,3,5,6-tetrafluoropyridine (CAS 1682-20-8) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C5H2F4N2 and a molecular weight of 166.076 g/mol. It is also known as 2,3,5,6-Tetrafluoropyridin-4-amine, 4-Aminotetrafluoropyridine and 2,3,5,6-Tetrafluoro-4-pyridinamine. Key properties include a melting point of 85-87 °C(lit.), a boiling point of 208.3±35.0 °C at 760 mmHg, a density of 1.6±0.1 g/cm3 and a flash point of 79.8±25.9 °C. GHS signal word: Warning. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
1682-20-8
Jingsj CID
J-21156-5
Molecular Formula
C5H2F4N2
Chinese Name
4-氨基-2,3,5,6-四氟吡啶
Molecular Weight
166.076 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Melting Point85-87 °C(lit.)
Boiling Point208.3±35.0 °C at 760 mmHg
Density1.6±0.1 g/cm3
Flash Point79.8±25.9 °C

GHS Safety & Compliance

IrritantSignal word: Warning

Frequently Asked Questions

What is the CAS number of 4-Amino-2,3,5,6-tetrafluoropyridine?

The CAS number of 4-Amino-2,3,5,6-tetrafluoropyridine is 1682-20-8.

What are the molecular formula and molecular weight of 4-Amino-2,3,5,6-tetrafluoropyridine?

4-Amino-2,3,5,6-tetrafluoropyridine has molecular formula C5H2F4N2 and molecular weight 166.076 g/mol.

Is 4-Amino-2,3,5,6-tetrafluoropyridine hazardous?

4-Amino-2,3,5,6-tetrafluoropyridine has GHS signal word Warning.

Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.

Last updated:

How to cite: Jingsj. "4-Amino-2,3,5,6-tetrafluoropyridine (CAS 1682-20-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-21156-5 (accessed 2026-10-22).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.