Product Name

  • Name

    4-METHOXYBENZENESULFONAMIDE

  • EINECS
  • CAS No. 1129-26-6
  • Article Data48
  • CAS DataBase
  • Density 1.314 g/cm3
  • Solubility Slightly soluble in water.
  • Melting Point 111-115ºC
  • Formula C7H9NO3S
  • Boiling Point 352.2 ºC at 760 mmHg
  • Molecular Weight 187.219
  • Flash Point 166.8 ºC
  • Transport Information
  • Appearance crystalline powder
  • Safety 22-24/25
  • Risk Codes
  • Molecular Structure Molecular Structure of 1129-26-6 (4-METHOXYBENZENESULFONAMIDE)
  • Hazard Symbols IrritantXi
  • Synonyms Benzenesulfonamide,p-methoxy- (6CI,7CI,8CI);4-(Methyloxy)benzenesulfonamide;4-Methoxybenzenesulfonamide;4-Methoxyphenylsulfonamide;NSC 73188;p-Methoxybenzenesulfonamide;
  • PSA 77.77000
  • LogP 2.12370

4-Methoxybenzenesulfonamide Specification

The IUPAC name of 4-Methoxybenzenesulfonamide is 4-methoxybenzenesulfonamide. With the CAS registry number 1129-26-6, it is also named as Benzenesulfonamide, 4-methoxy-. The product's categories are sulfonamide, organic building blocks, sulfonamides/sulfinamides and sulfur compounds. Moreover, it is crystalline powder, which should be stored in cool and dry place. You should keep container tightly sealed and ensure that the workplace have good ventilation or exhaust. In addition, its molecular formula is C7H9NO3S and molecular weight is 187.22.

The other characteristics of this product can be summarized as: (1)ACD/LogP: 0.47; (2)# of Rule of 5 Violations: 0; (3)ACD/LogD (pH 5.5): 0.47; (4)ACD/LogD (pH 7.4): 0.47; (5)ACD/BCF (pH 5.5): 1.34; (6)ACD/BCF (pH 7.4): 1.34; (7)ACD/KOC (pH 5.5): 42.92; (8)ACD/KOC (pH 7.4): 42.86; (9)H bond acceptors: 4; (10)H bond donors: 2; (11)Freely Rotating Bonds: 2; (12)Polar Surface Area: 54.99 Å2; (13)Index of Refraction: 1.552; (14)Molar Refractivity: 45.55 cm3; (15)Molar Volume: 142.3 cm3; (16)Polarizability: 18.05×10-24cm3; (17)Surface Tension: 46.4 dyne/cm; (18)Density: 1.314 g/cm3; (19)Flash Point: 166.8 °C; (20)Melting Point: 111-115 °C; (21)Enthalpy of Vaporization: 59.7 kJ/mol; (22)Boiling Point: 352.2 °C at 760 mmHg; (23)Vapour Pressure: 3.89E-05 mmHg at 25 °C.

Preparation of 4-Methoxybenzenesulfonamide: this chemical can be prepared by N-(4-Methoxy-benzolsulfonyl)-dimethylsulfimin.



This reaction needs water to heating. The reaction time is 1 hour. The yield is 72 %.

Uses of 4-Methoxybenzenesulfonamide: it can reacts with 4-Methoxy-benzaldehyde diethylacetal to get 4-Methoxy-N-(4-methoxy-benzylidene)-benzenesulfonamide.



This reaction will occur at temperature of 150 - 180 °C for 0.5 hour. The yield is 80 % .

When you are using this chemical, please be cautious about it as the following: please do not breathe dust and avoid contact with skin and eyes.

People can use the following data to convert to the molecule structure.
SMILES:O=S(=O)(c1ccc(OC)cc1)N
InChI:InChI=1/C7H9NO3S/c1-11-6-2-4-7(5-3-6)12(8,9)10/h2-5H,1H3,(H2,8,9,10)
InChIKey:MSFQEZBRFPAFEX-UHFFFAOYAL
Std. InChI:InChI=1S/C7H9NO3S/c1-11-6-2-4-7(5-3-6)12(8,9)10/h2-5H,1H3,(H2,8,9,10)
Std. InChIKey:MSFQEZBRFPAFEX-UHFFFAOYSA-N

The toxicity data is as follows:

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
mouse LD50 intraperitoneal > 1gm/kg (1000mg/kg)   Journal of Medicinal Chemistry. Vol. 8, Pg. 548, 1965.

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