2-Aminopyridine

2-Aminopyridine

Names
IUPAC name Pyridin-2-amine
Other names 2-Pyridinamine; 2-Pyridylamine; α-Aminopyridine; α-Pyridylamine
Identifiers
CAS Number	504-29-0 Y
3D model (Jmol)	Interactive image Interactive image
ChemSpider	10008 Y
ECHA InfoCard	100.007.263
PubChem CID	10439
InChI InChI=1S/C5H6N2/c6-5-3-1-2-4-7-5/h1-4H,(H2,6,7) Y Key: ICSNLGPSRYBMBD-UHFFFAOYSA-N Y InChI=1/C5H6N2/c6-5-3-1-2-4-7-5/h1-4H,(H2,6,7) Key: ICSNLGPSRYBMBD-UHFFFAOYAM
SMILES n1ccccc1N c1ccnc(c1)N
Properties
Chemical formula	C5H6N2
Molar mass	94.12 g·mol−1
Appearance	colourless solid
Melting point	59 to 60 °C (138 to 140 °F; 332 to 333 K)
Boiling point	210 °C (410 °F; 483 K)
Solubility in water	>100%
Hazards
Flash point	68 °C; 154 °F; 341 K
Lethal dose or concentration (LD, LC):
LD50 (median dose)	200 mg/kg (rat, oral) 50 mg/kg (mouse, oral)
US health exposure limits (NIOSH):
PEL (Permissible)	TWA 0.5 ppm (2 mg/m3)
REL (Recommended)	TWA 0.5 ppm (2 mg/m3)
IDLH (Immediate danger)	5 ppm
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Y  (what is YN ?)
Infobox references

2-Aminopyridine is an organic compound with the formula H₂NC₅H₄N. It is one of three isomeric aminopyridines. It is a colourless solid that is used in the production of the drugs piroxicam, sulfapyridine, tenoxicam, and tripelennamine. It is produced by the reaction of sodium amide with pyridine, the Chichibabin reaction.

Although 2-hydroxypyridine exists in significant amounts as the pyridone tautomer, the related imine tautomer (HNC₅H₄NH) is less important for 2-aminopyridine.