... > chemical entity > molecular entity > main group molecular entity > p-block molecular entity > chalcogen molecular entity > oxygen molecular entity > organooxygen compound > carbonyl compound > carboxylic ester > O-acylcarnitine > CAR(21:0)

... > chemical entity > molecular entity > main group molecular entity > p-block molecular entity > chalcogen molecular entity > organochalcogen compound > organooxygen compound > carbonyl compound > carboxylic ester > O-acylcarnitine > CAR(21:0)

... > chemical entity > molecular entity > main group molecular entity > p-block molecular entity > carbon group molecular entity > organic molecular entity > heteroorganic entity > organochalcogen compound > organooxygen compound > carbonyl compound > carboxylic ester > O-acylcarnitine > CAR(21:0)

... > chemical entity > molecular entity > main group molecular entity > p-block molecular entity > carbon group molecular entity > organic molecular entity > organic molecule > organic oxo compound > carbonyl compound > carboxylic ester > O-acylcarnitine > CAR(21:0)

... > chemical entity > molecular entity > polyatomic entity > molecule > organic molecule > organic oxo compound > carbonyl compound > carboxylic ester > O-acylcarnitine > CAR(21:0)

... > chemical entity > molecular entity > main group molecular entity > p-block molecular entity > chalcogen molecular entity > oxygen molecular entity > organooxygen compound > ester > carboxylic ester > O-acylcarnitine > CAR(21:0)

... > chemical entity > molecular entity > main group molecular entity > p-block molecular entity > chalcogen molecular entity > organochalcogen compound > organooxygen compound > ester > carboxylic ester > O-acylcarnitine > CAR(21:0)

... > chemical entity > molecular entity > main group molecular entity > p-block molecular entity > carbon group molecular entity > organic molecular entity > heteroorganic entity > organochalcogen compound > organooxygen compound > ester > carboxylic ester > O-acylcarnitine > CAR(21:0)

... > chemical entity > molecular entity > main group molecular entity > p-block molecular entity > pnictogen molecular entity > nitrogen molecular entity > organonitrogen compound > quaternary nitrogen compound > ammonium betaine > O-acylcarnitine > CAR(21:0)

... > chemical entity > molecular entity > main group molecular entity > p-block molecular entity > carbon group molecular entity > organic molecular entity > heteroorganic entity > organonitrogen compound > quaternary nitrogen compound > ammonium betaine > O-acylcarnitine > CAR(21:0)

... > chemical entity > molecular entity > main group molecular entity > p-block molecular entity > carbon group molecular entity > organic molecular entity > organic molecule > dipolar compound > zwitterion > onium betaine > ammonium betaine > O-acylcarnitine > CAR(21:0)

... > chemical entity > molecular entity > polyatomic entity > molecule > organic molecule > dipolar compound > zwitterion > onium betaine > ammonium betaine > O-acylcarnitine > CAR(21:0)