The Pyridine, 2,4-dinitro-,hydrochloride (1:1), with the CAS registry number 73883-48-4, has the systematic name of 2,4-dinitropyridine hydrochloride. It is a kind of organics, and should be stored in the dry and cool environment. And the molecular formula of the chemical is C₅H₄ClN₃O₄.

The characteristics of Pyridine, 2,4-dinitro-,hydrochloride (1:1) are as followings: (1)ACD/LogP: 0.06; (2)# of Rule of 5 Violations: 0; (3)ACD/LogD (pH 5.5): 0.06; (4)ACD/LogD (pH 7.4): 0.06; (5)ACD/BCF (pH 5.5): 1; (6)ACD/BCF (pH 7.4): 1; (7)ACD/KOC (pH 5.5): 25.61; (8)ACD/KOC (pH 7.4): 25.61; (9)#H bond acceptors: 7; (10)#H bond donors: 0; (11)#Freely Rotating Bonds: 2; (12)Polar Surface Area: 104.53 Å²; (13)Flash Point: 159.2 °C; (14)Enthalpy of Vaporization: 56.01 kJ/mol; (15)Boiling Point: 339.7 °C at 760 mmHg; (16)Vapour Pressure: 0.000178 mmHg at 25°C. 

Addtionally, the following datas could be converted into the molecular structure:
(1)SMILES: O=[N+]([O-])c1nccc([N+]([O-])=O)c1.Cl
(2)InChI: InChI=1/C5H3N3O4.ClH/c9-7(10)4-1-2-6-5(3-4)8(11)12;/h1-3H;1H
(3)InChIKey: CWJZJVKLAIVAJF-UHFFFAOYAP