The CAS registry number of Benzenesulfonic acid,4-chloro-, hydrazide is 2751-25-9. This chemical is also named as (4-Chlorophenyl)hydrazinosulfone. In addition, its molecular formula is C₆H₇ClN₂O₂S and molecular weight is 206.65. Its systematic name is called 4-chlorobenzenesulfonohydrazide.

Physical properties about this chemical are: (1)ACD/LogP: 0.72; (2)# of Rule of 5 Violations: 0; (3)#H bond acceptors: 4; (4)#H bond donors: 3; (5)#Freely Rotating Bonds: 2; (6)Index of Refraction: 1.601; (7)Molar Refractivity: 47.67 cm³; (8)Molar Volume: 139.1 cm³; (9)Surface Tension: 54.6 dyne/cm; (10)Density: 1.485 g/cm³; (11)Flash Point: 171.2 °C; (12)Enthalpy of Vaporization: 60.51 kJ/mol; (13)Boiling Point: 359.5 °C at 760 mmHg.

Preparation: this chemical can be prepared by 4-chloro-benzenesulfonyl chloride. This reaction will need reagent hydrazine hydrate and solvent tetrahydrofuran. The reaction time is 15 hours with reaction temperature of 10 - 20 °C. The yield is about 89 %.

Uses of Benzenesulfonic acid,4-chloro-, hydrazide: it can be used to produce 4-chloro-benzenesulfonyl azide at ambient temperature. It will need reagent SHNC and solvent H₂O with reaction time of 6.5 hours. The yield is about 60 %.

You can still convert the following datas into molecular structure:
(1)SMILES: O=S(=O)(c1ccc(Cl)cc1)NN
(2)InChI: InChI=1/C6H7ClN2O2S/c7-5-1-3-6(4-2-5)12(10,11)9-8/h1-4,9H,8H2
(3)InChIKey: IEEVZEZCTIQTJS-UHFFFAOYAB