Reported in EPA TSCA Inventory.

Sulfapyridine, with the CAS registry number 144-83-2, it is also named as 2-(p-Aminobenzenesulphonamido)pyridine. The product's categories are Aromatics Compounds; Aromatics; Sulfur & Selenium Compounds. It is white or yellowish-white crystalline powder which is stable, combustible, potentially toxic and incompatible with strong oxidizing agents. What's more, this chemical can be obtained by condensation and hydrolysis of 2-aminopyridine. Additionally, it should be stored at the temperature of 2-8 °C.

Physical properties about Sulfapyridine are: (1)ACD/LogP: 0.469; (2)ACD/LogD (pH 5.5): 0.47; (3)ACD/LogD (pH 7.4): 0.41; (4)ACD/BCF (pH 5.5): 1.34; (5)ACD/BCF (pH 7.4): 1.16; (6)ACD/KOC (pH 5.5): 42.77; (7)ACD/KOC (pH 7.4): 37.14; (8)#H bond acceptors: 5; (9)#H bond donors: 3; (10)#Freely Rotating Bonds: 2; (11)Index of Refraction: 1.674; (12)Molar Refractivity: 65.348 cm³; (13)Molar Volume: 174.056 cm³; (14)Polarizability: 25.906 10-24cm³; (15)Surface Tension: 73.056999206543 dyne/cm; (16)Density: 1.432 g/cm³; (17)Flash Point: 240.188 °C; (18)Enthalpy of Vaporization: 73.669 kJ/mol; (19)Boiling Point: 473.538 °C at 760 mmHg

Uses of Sulfapyridine: It is antibacterial which is used to treat certain skin diseases. But it is not prescribed for treatment in humans any more. And it is also used as pharmaceutical intermediate.

When you are using this chemical, please be cautious about it as the following:
It is irritating to eyes, respiratory system and skin, so people should not breathe dust and avoid contact with skin and eyes. In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. If you want to contact this product, you must wear suitable protective clothing.  

People can use the following data to convert to the molecule structure.
1. SMILES:O=S(=O)(Nc1ncccc1)c2ccc(N)cc2
2. InChI:InChI=1/C11H11N3O2S/c12-9-4-6-10(7-5-9)17(15,16)14-11-3-1-2-8-13-11/h1-8H,12H2,(H,13,14)

The following are the toxicity data which has been tested.