Molecular structure of 3-Chloro-4-fluorophenylhydrazine hydrochloride (CAS NO.175135-74-7) is:

Product Name: 3-Chloro-4-fluorophenylhydrazine hydrochloride
CAS Registry Number: 175135-74-7
Systematic Name: (3-chloro-4-fluorophenyl)diazanium Chloride
Molecular Formula: C₆H₆ClFN₂.HCl
Molecular Weight: 197.04
Melting Point: 211 °C
Flash Point: 106.9 °C
Enthalpy of Vaporization: 49.04 kJ/mol
Boiling Point: 253.1 °C at 760 mmHg
Vapour Pressure: 0.0187 mmHg at 25°C 
Product Categories: Aromatic Hydrazides, Hydrazines, Hydrazones and Oximes;Phenylhydrazine;API intermediates 
SMILES: [Cl-].Fc1ccc(N[NH3+])cc1Cl
InChI: InChI=1/C6H6ClFN2.ClH/c7-5-3-4(10-9)1-2-6(5)8;/h1-3,10H,9H2;1H
InChIKey: DWCDDXINAZHRLK-UHFFFAOYAQ
Std. InChI: InChI=1S/C6H6ClFN2.ClH/c7-5-3-4(10-9)1-2-6(5)8;/h1-3,10H,9H2;1H
Std. InChIKey: DWCDDXINAZHRLK-UHFFFAOYSA-N

Safty information about 3-Chloro-4-fluorophenylhydrazine hydrochloride (CAS NO.175135-74-7) is:
Hazard Codes: Xi
Risk Statements: 20/21/22-36/37/38 
R20/21/22:Harmful by inhalation, in contact with skin and if swallowed. 
R36/37/38:Irritating to eyes, respiratory system and skin.
Safety Statements: 22-24/25 
S22:Do not breathe dust. 
S24/25:Avoid contact with skin and eyes.
Hazard Note: Irritant

 3-Chloro-4-fluorophenylhydrazine hydrochloride , its cas register number is 175135-74-7. It also can be called Hydrazine,(3-chloro-4-fluorophenyl)-, hydrochloride (1:1) ; 1-(3-Chloro-4-fluorophenyl)hydrazine hydrochloride .