Aoki, KeiIshii, KeizouUSUS5340931 * 1989年3月15日 1994年8月23日 Nippon Paint Co., Ltd. Aromatic allene compounds of the formula (CH.sub.2 ═CH--O).sub.n --R--(A.sub.m in which R is an aromatic group and preparation thereof...
Disclosed herein are novel allene-containing compounds of the formula ##STR1## wherein R is hydrogen, alkyl of 1 to 6 carbon atoms or a pharmaceutically acceptable salt; X is CH═CH, OCH.sub.2, CH.sub.2 O, CH.sub.2 S, SCH.sub.2, O or... JW Patterson,JR Pfister - US 被引...
CHORISMIC ACID (CAS 617-12-9, C10H10O6), is a colorless solid, widely used in the biosynthesis of various natural products, with a molecular formula of C10H10O6. It plays a crucial role in the formation of aromatic compounds and is an important intermediate in the shikimate pathway. ...
A chemical formula that shows how the atoms making up a compound are arranged within the molecule. For example, the structural formula of aspirin is CH3COOC6H4COOH, indicating that it is an acetate (CH3COO) of a phenyl (C6H4) organic acid (COOH). Since structural formulas can get quite...
aHeterocyclic compounds are powerful aromatic compounds with very low odor threshold values in most heat-treated foods 杂环化合物是强有力的芳香化合物以非常低气味阈值在多数热处理的食物 [translate] acarbon sinks 碳水槽 [translate] a关于苹果的研究 正在翻译,请等待... [translate] aI hope you hoppy ...
Aromatic Compound | Definition, Characteristics & Examples from Chapter 52/ Lesson 9 231K Understand what aromatic compounds are and the definition of aromatic in chemistry. Learn what makes a compound aromatic, see its characteristics and examples. ...
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Criteria for Aromaticity Examples of Aromatic Compounds Antiaromatic Compounds Examples of Antiaromatic Compounds Definition: What is Huckel’s Rule? Pi electrons are defined as electrons that participate in pi bonds or lone pairs within p orbitals. In order to be aromatic, a molecule must have a...
SOLUTION: (A) A diisocyanate monomer represented by formula I is used as a monomer and polymerized in the presence of (B) a phosphorus-based catalyst (e.g. 1-phenyl-2-phospholene-1-oxide) preferably at 40-150 deg.C to thereby afford an aromatic polycarbodiimide having a constitutional unit...
Kekule formula - a closed chain of 6 carbon atoms with hydrogen atoms attached benzene formula, benzene nucleus, benzene ring benzene, benzine, benzol - a colorless liquid hydrocarbon; highly inflammable; carcinogenic; the simplest of the aromatic compounds Based on WordNet 3.0, Farlex clipart coll...