L(+)-Tartaric acid CAS 87-69-4 is colorless translucent crystal or white fine to coarse crystalline powder with sour taste.
5-Chlorovaleryl chloride CAS 1575-61-7 is an important synthetic intermediate of pyrazole herbicides. 5-Chloropentanoyl chloride is used as the raw material of 1,1,7-trichloro-1-hepten-3-one, and then the third-generation pyrazole herbicides can be synthesized. Pyrazole herbicides have the characteristics of ultra-efficient chemical activity, high selectivity, extremely low mammalian toxicity and good environmental characteristics, etc., and have become the hot spot of herbicide research and development in the world in recent years. As the demand for high-efficiency herbicides continues to expand, so does the demand for 5-chlorovaleryl chloride as an intermediate.
Diphenylmethane CAS 101-81-5 is a colorless needle-like crystal with an orange fragrance. Insoluble in water, soluble in ethanol, ether, chloroform, benzene and cyclohexane.
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2-Bromo-5-chlorobenzoic acid CAS 21739-93-5 is a white crystal. Melting point 154-156 ℃.
5-Bromo-2,4-dichloropyrimidine CAS 36082-50-5 is a compound useful in organic synthesis. Colorless or pale yellow liquid
