The Benzenesulfonamide,4-amino-3-chloro-N,N-dimethyl-, with the CAS registry number 19021-35-3, has the systematic name and IUPAC name of 4-amino-3-chloro-N,N-dimethylbenzenesulfonamide. And the molecular formula of this chemical is C₈H₁₁ClN₂O₂S.

The physical properties of Benzenesulfonamide,4-amino-3-chloro-N,N-dimethyl- are as followings: (1)ACD/LogP: 2.01; (2)# of Rule of 5 Violations: 0; (3)#H bond acceptors: 4; (4)#H bond donors: 2; (5)#Freely Rotating Bonds: 3; (6)Polar Surface Area: 49 Å²; (7)Index of Refraction: 1.59; (8)Molar Refractivity: 57.15 cm³; (9)Molar Volume: 169.2 cm³; (10)Polarizability: 22.65×10^-24cm³; (11)Surface Tension: 52.2 dyne/cm; (12)Density: 1.387 g/cm³; (13)Flash Point: 178.9 °C; (14)Enthalpy of Vaporization: 61.94 kJ/mol; (15)Boiling Point: 372.3 °C at 760 mmHg; (16)Vapour Pressure: 9.73E-06 mmHg at 25°C.

Preparation of Benzenesulfonamide,4-amino-3-chloro-N,N-dimethyl-: This chemical can be prepared by acetic formic anhydride and 1-Amino-2-chlor-benzol-4-sulfonsaeure-dimethylamid. The reaction will need solvent tetrahydrofuran. The reaction time is 2 hours with temperature of 25°C, and the yield is about 99%. 

You can still convert the following datas into molecular structure:
(1)SMILES: Clc1cc(ccc1N)S(=O)(=O)N(C)C
(2)InChI: InChI=1/C8H11ClN2O2S/c1-11(2)14(12,13)6-3-4-8(10)7(9)5-6/h3-5H,10H2,1-2H3
(3)InChIKey: DQGWARKSLZMCJF-UHFFFAOYAB

The toxicity data is as follows: