TCI C0953 1-(4-Chlorophenyl)-3-methyl-5-pyrazolone (CAS 13024-90-3) is a heterocyclic pyrazolone building block carrying a 4-chlorophenyl substituent on the ring nitrogen. Its reactive ring carbon makes it a classic coupling component for azo dye and pigment synthesis, as well as a starting point for condensation reactions with aldehydes. Pyrazolone scaffolds are also widely explored in medicinal chemistry and as ligands for metal complexation. Offered in 25 g and 500 g packs, the solid should be kept tightly closed in a cool, dry, light-protected place.
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- Dacre et al. (1993). p-Chlorophenyl Methyl Sulfide, p-Chlorophenyl Methyl Sulfoxide, and p-Chlorophenyl Methyl Sulfone. III. Toxicokinetics and Metabolism in Rats and Rhesus Monkeys. Journal of the American College of Toxicology doi:10.1177/109158189301200409
- Thake et al. (1993). p-Chlorophenyl Methyl Sulfide, p-Chlorophenyl Methyl Sulfoxide, and p-Chlorophenyl Methyl Sulfone. II. Subchronic Effects in Rodents and Rhesus Monkeys. Journal of the American College of Toxicology doi:10.1177/109158189301200408
- Leber et al. (1993). p-Chlorophenyl Methyl Sulfide, p-Chlorophenyl Methyl Sulfoxide, and p-Chlorophenyl Methyl Sulfone. I. Acute Toxicity and Bacterial Mutagenicity Studies. Journal of the American College of Toxicology doi:10.1177/109158189301200407
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