pyran|pyrans in English

noun

either of two compounds comprised of one oxygen atom and five carbon atoms arranged in a ring (Chemistry)

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Below are sample sentences containing the word "pyran|pyrans" from the English Dictionary. We can refer to these sentence patterns for sentences in case of finding sample sentences with the word "pyran|pyrans", or refer to the context using the word "pyran|pyrans" in the English Dictionary.

1. Brazilein (6a,7-dihydro-3,6a,10-trihydroxy-benz[b]indeno[1,2-d]pyran-9(6H)-one, Fig

2. 20 Rare earth chlorides were used to catalyze the synthesis of 2-butoxy- 4-dihydro-2H-pyran using equimolar acrolein and vinyl butyl ether.

3. The invention relates to photochromic anellated naphthopyrans having a benzene ring which is adjacent to the pyran acid and is linked to the para substituents via both meta positions, and to use thereof in plastics of all types, in particular for ophthalmic purposes.