The 1-Propanesulfonylchloride, 3-(4-methoxyphenoxy)-, with the CAS registry number 118943-25-2, is also known as Chloro[3-(4-methoxyphenoxy)propyl]sulfone. It belongs to the product categories of Organic Building Blocks; Sulfonyl Halides; Sulfur Compounds. The molecular formula of this chemical is C₁₀H₁₃ClO₄S and molecular weight is 264.73. What's more, its systematic name is 3-(4-Methoxyphenoxy)propane-1-sulfonyl chloride. It will not decompose, if it is used and stored according to the regulations. It must be protected from strong oxidizers and water. Furthermore, it should be sealed and stored in a cool and dry place. It should be ensured that the workshop is well ventilated or equipped with exhaust device. 

Physical properties of 1-Propanesulfonylchloride, 3-(4-methoxyphenoxy)- are: (1)ACD/LogP: 2.45; (2)# of Rule of 5 Violations: 0; (3)ACD/LogD (pH 5.5): 2.45; (4)ACD/LogD (pH 7.4): 2.45; (5)ACD/BCF (pH 5.5): 42.76; (6)ACD/BCF (pH 7.4): 42.76; (7)ACD/KOC (pH 5.5): 511.79; (8)ACD/KOC (pH 7.4): 511.79; (9)#H bond acceptors: 4; (10)#H bond donors: 0; (11)#Freely Rotating Bonds: 6; (12)Polar Surface Area: 60.98 Å²; (13)Index of Refraction: 1.527; (14)Molar Refractivity: 62.4 cm³; (15)Molar Volume: 202.8 cm³; (16)Polarizability: 24.7×10^-24 cm³; (17)Surface Tension: 43.7 dyne/cm; (18)Density: 1.304 g/cm³; (19)Flash Point: 189.3 °C; (20)Enthalpy of Vaporization: 61.38 kJ/mol; (21)Boiling Point: 389.4 °C at 760 mmHg; (22)Vapour Pressure: 6.41E-06 mmHg at 25 °C.

When you are using this chemical, please be cautious about it as the following:
It can cause burns. In case of contact with eyes, you should rinse immediately with plenty of water and seek medical advice. When using it, you need wear suitable protective clothing, gloves and eye/face protection. In case of accident or if you feel unwell, you should seek medical advice immediately (show the label where possible).

You can still convert the following datas into molecular structure:
(1)SMILES: ClS(=O)(=O)CCCOc1ccc(OC)cc1
(2)InChI: InChI=1/C10H13ClO4S/c1-14-9-3-5-10(6-4-9)15-7-2-8-16(11,12)13/h3-6H,2,7-8H2,1H3
(3)InChIKey: UFZBQBXKJZWBBV-UHFFFAOYAL