The 2,3-diaminopyridine, with the cas registry number 452-58-4, has the IUPAC name of pyridine-2,3-diamine. This is a kind of brown power and is sensitive to air. Besides, its product categories are various, including pyridines, pyrimidines, purines and pteredines; amines; pyridines derivates; highly purified reagents; other categories; refined products by sublimation; boronic acid; c5; heterocyclic building blocks.

The characteristics of this kind of chemical are as follows: (1)ACD/LogP: 0.27; (2)ACD/LogD (pH 5.5): -0.55; (3) ACD/LogD (pH 7.4): 0.24; (4)ACD/BCF (pH 5.5): 1; (5)ACD/BCF (pH 7.4): 1; (6)ACD/KOC (pH 5.5): 5.06; (7)ACD/KOC (pH 7.4): 31.19; (8)#H bond acceptors: 3; (9)#H bond donors: 4; (10)#Freely Rotating Bonds: 1; (11)Polar Surface Area: 19.37; (12)Index of Refraction: 1.676; (13)Molar Refractivity: 32.81 cm³; (14)Molar Volume: 87.2 cm³; (15)Polarizability: 13 ×10^-24 cm³; (16)Surface Tension: 70.9 dyne/cm; (17)Density: 1.251 g/cm³; (18)Flash Point: 167.7 °C; (19)Enthalpy of Vaporization: 55.22 kJ/mol; (20)Boiling Point: 311.3 °C at 760 mmHg; (21)Vapour Pressure: 0.00057 mmHg at 25°C; (22)Exact Mass: 109.063997; (23)MonoIsotopic Mass:109.063997; (24)Topological Polar Surface Area: 64.9; (25)Heavy Atom Count: 8; (26)Formal Charge: 0; (27)Complexity: 74.1.

The production method of this chemical is as below: 3-nitro-pyridin-2-ylamine could react to produce 2,3-diaminopyridine, with the following condition: reagent: iron; concentrated aqueous HCl; ethanol.

The use of this chemical is as below: 2,3-diaminopyridine could react with 2-oxo-propionic acid ethyl ester to produce 2-methyl-4H-pyrido[2,3-b]pyrazin-3-one, with the following condition: reagent: benzene.

When you are dealing with this chemical, you should be very careful and then take some measures to protect yourself. For being a kind of irritant chemical, it is irritating to eyes, respiratory system and skin and may cause inflammation to the skin or other mucous membranes. Then it is a kind of toxic chemical which may cause damage to health. Therefore, you should take the following instructions.  Wear suitable gloves and eye/face protection and protective clothing. If in case of contacting with eyes, rinse immediately with plenty of WATER and seek medical advice, and if in case of accident or if you feel unwell, seek medical advice immediately (show label where possible). Besides, after contacting with skin, wash immediately with plenty of ... (to be specified by the manufacturer). 

Additionally, the following datas could be converted into the molecular structure:
(1)Canonical SMILES: C1=CC(=C(N=C1)N)N
(2)InChI: InChI=1S/C5H7N3/c6-4-2-1-3-8-5(4)7/h1-3H,6H2,(H2,7,8)
(3)InChIKey: ZZYXNRREDYWPLN-UHFFFAOYSA-N 

Below are the toxicity information of this chemical: