The Carbonochloridic acid,4-chlorophenyl ester, with the CAS registry number 7693-45-0, has the systematic name of 4-chlorophenyl carbonochloridate. It is a kind of moisture sensitive chemical, and belongs to the following product categories: Acid Halides; Carbonyl Compounds; Organic Building Blocks. And the molecular formula of the chemical is C₇H₄Cl₂O₂.

The characteristics of Carbonochloridic acid,4-chlorophenyl ester are as followings: (1)ACD/LogP: 3.49; (2)# of Rule of 5 Violations: 0; (3)ACD/LogD (pH 5.5): 3.49; (4)ACD/LogD (pH 7.4): 3.49; (5)ACD/BCF (pH 5.5): 265.53; (6)ACD/BCF (pH 7.4): 265.53; (7)ACD/KOC (pH 5.5): 1891.44; (8)ACD/KOC (pH 7.4): 1891.44; (9)#H bond acceptors: 2; (10)#H bond donors: 0; (11)#Freely Rotating Bonds: 2; (12)Polar Surface Area: 26.3 Å²; (13)Index of Refraction: 1.55; (14)Molar Refractivity: 42.7 cm³; (15)Molar Volume: 133.8 cm³; (16)Polarizability: 16.92×10^-24cm³; (17)Surface Tension: 43.2 dyne/cm; (18)Density: 1.426 g/cm³; (19)Flash Point: 106 °C; (20)Enthalpy of Vaporization: 45.91 kJ/mol; (21)Boiling Point: 222.6 °C at 760 mmHg; (22)Vapour Pressure: 0.101 mmHg at 25°C.

Preparation of Carbonochloridic acid,4-chlorophenyl ester: This chemical can be prepared by carbonyl dichloride and 4-chloro-phenol; sodium salt. The reaction will need reagent benzene and toluene. The reaction time is 2 hours with ambient temperature, and the yield is about 60%. 

Uses of Carbonochloridic acid,4-chlorophenyl ester: It can react with phenylurea to produce 4-phenyl-allophanic acid-(4-chloro-phenyl ester). This reaction will need reagent pyridine, and the menstruum benzene. The reaction time is 1 hour with ambient temperature, and the yield is about 55%.   

You should be cautious while dealing with this chemical. It is toxic by inhalation, in contact with skin and if swallowed, and it may cause burns. Therefore, you had better take the following instructions: Wear suitable protective clothing, gloves and eye/face protection; In case of contacting with eyes, rinse immediately with plenty of water and seek medical advice; After contact with skin, wash immediately with plenty of ... (to be specified by the manufacturer); In case of accident or if you feel unwell, seek medical advice immediately (show label where possible).

Addtionally, the following datas could be converted into the molecular structure:
(1)SMILES: Clc1ccc(OC(Cl)=O)cc1
(2)InChI: InChI=1/C7H4Cl2O2/c8-5-1-3-6(4-2-5)11-7(9)10/h1-4H
(3)InChIKey: RYWGPCLTVXMMHO-UHFFFAOYAQ