Sulfamerazine

Reported in EPA TSCA Inventory.

The Benzenesulfonamide,4-amino-N-(4-methyl-2-pyrimidinyl)-, with the CAS registry number 127-79-7, is also known as 2-(4-Aminobenzenesulfonamido)-4-methylpyrimidine. It belongs to the product categories of Aromatics; Heterocycles; Intermediates & Fine Chemicals; Pharmaceuticals; Sulfur & Selenium Compounds. Its EINECS number is 204-866-2. This chemical's molecular formula is C₁₁H₁₂N₄O₂S and molecular weight is 264.30. What's more, its systematic name is 4-amino-N-(4-methylpyrimidin-2-yl)benzenesulfonamide. Its classification codes are: (1)Anti-infective agents; (2)Antibacterial; (3)Drug / Therapeutic Agent; (4)Reproductive Effect. It is a sulfanilamide that is used as an antibacterial agent. 

Physical properties of Benzenesulfonamide,4-amino-N-(4-methyl-2-pyrimidinyl)- are: (1)ACD/LogP: 0.34; (2)# of Rule of 5 Violations: 0; (3)ACD/LogD (pH 5.5): 0.34; (4)ACD/LogD (pH 7.4): -0.01; (5)ACD/BCF (pH 5.5): 1.06; (6)ACD/BCF (pH 7.4): 1; (7)ACD/KOC (pH 5.5): 36.04; (8)ACD/KOC (pH 7.4): 16.4; (9)#H bond acceptors: 6; (10)#H bond donors: 3; (11)#Freely Rotating Bonds: 2; (12)Polar Surface Area: 74.78 Å²; (13)Index of Refraction: 1.66; (14)Molar Refractivity: 67.76 cm³; (15)Molar Volume: 183.5 cm³; (16)Polarizability: 26.86×10^-24cm³; (17)Surface Tension: 76.4 dyne/cm; (18)Density: 1.439 g/cm³; (19)Flash Point: 267.8 °C; (20)Enthalpy of Vaporization: 79.18 kJ/mol; (21)Boiling Point: 519.1 °C at 760 mmHg; (22)Vapour Pressure: 7.03E-11 mmHg at 25°C.

Uses of Benzenesulfonamide,4-amino-N-(4-methyl-2-pyrimidinyl)-: it can be used to produce N-(4-methyl-pyrimidin-2-yl)-4-(3-oxo-1-thia-4-aza-spiro[4.4]non-4-yl)-benzenesulfonamide by heating. It will need solvent pyridine with the reaction time of 2 hours. The yield is about 78%.

When you are using this chemical, please be cautious about it as the following:
It is irritating to eyes, respiratory system and skin. 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 and gloves.

You can still convert the following datas into molecular structure:
(1)SMILES: O=S(=O)(Nc1nc(ccn1)C)c2ccc(N)cc2
(2)Std. InChI: InChI=1S/C11H12N4O2S/c1-8-6-7-13-11(14-8)15-18(16,17)10-4-2-9(12)3-5-10/h2-7H,12H2,1H3,(H,13,14,15)
(3)Std. InChIKey: QPPBRPIAZZHUNT-UHFFFAOYSA-N

The toxicity data is as follows:  

Organism	Test Type	Route	Reported Dose (Normalized Dose)	Effect	Source
mouse	LD50	intraperitoneal	1400mg/kg (1400mg/kg)		Arzneimittel-Forschung. Drug Research. Vol. 5, Pg. 213, 1955.
mouse	LD50	oral	25gm/kg (25000mg/kg)		Archives Internationales de Pharmacodynamie et de Therapie. Vol. 94, Pg. 338, 1953.
mouse	LD50	subcutaneous	1190mg/kg (1190mg/kg)		Acta Biologica et Medica Germanica. Vol. 27, Pg. 141, 1971.
rat	LD50	intravenous	1100mg/kg (1100mg/kg)		Naunyn-Schmiedeberg's Archiv fuer Experimentelle Pathologie und Pharmakologie. Vol. 211, Pg. 367, 1950.
rat	LD50	subcutaneous	1890mg/kg (1890mg/kg)		Acta Biologica et Medica Germanica. Vol. 27, Pg. 141, 1971.