[6295-87-0] C₅H₇IN₂ (MW 222.03)

InChI = 1S/C5H7N2.HI/c6-7-4-2-1-3-5-7;/h1-5H,6H2;1H/q+1;/p-1

InChIKey = NDRLPYIMWROJBG-UHFFFAOYSA-M

• Alternate versions also are known (most common salts are listed, additional counterions also exist).

• [45458-31-9] 1-Amino-pyridinium.

  InChI = 1S/C5H7N2/c6-7-4-2-1-3-5-7/h1-5H,6H2/q+1

  InChIKey = PFZCOWLKXHIVII-UHFFFAOYSA-N

• [25275-41-6] 1-Amino-pyridinium inner salt (ylide).

  InChI = 1S/C5H6N2/c6-7-4-2-1-3-5-7/h1-6H

  InChIKey = LWBPCECUDKEKAD-UHFFFAOYSA-N

• [39996-41-3] 1-Aminopyridinium 2,4,6-trimethylbenzene sulfonate.

  InChI = 1S/C9H12O3S.C5H7N2/c1-6-4-7(2)9(8(3)5-6)13(10,11)12;6-7-4-2-1-3-5-7/h4-5H,1-3H3,(H,10,11,12);1-5H,6H2/q;+1/p-1

  InChIKey = UDVCZSURIVJFJO-UHFFFAOYSA-M

• [28460-19-7] 1-Aminopyridinium chloride.

  InChI = 1S/C5H7N2.ClH/c6-7-4-2-1-3-5-7;/h1-5H,6H2;1H/q+1;/p-1

  InChIKey = KMNOAKSVNRVGPR-UHFFFAOYSA-M

• [28460-20-0] 1-Aminopyridinium perchlorate.

  InChI = 1S/C5H7N2.ClHO4/c6-7-4-2-1-3-5-7;2-1(3,4)5/h1-5H,6H2;(H,2,3,4,5)/q+1;/p-1

  InChIKey = MMUOFIXPOAIOLD-UHFFFAOYSA-M

(reagent used as a building block to construct fused heterocycles, synthesis of substituted pyridines, dipolar cycloadditions, ylide type reactions)

Physical Data: 159–161 °C.

Form Supplied in: crystalline solid ranging from white to pale yellow to pink in color, widely available from commercial sources.

Handling, Storage, and Precautions: Material can be stored for indefinite periods if kept at 2–8 °C under an inert atmosphere. Material is hygroscopic and should avoid contact with strong oxidizers.