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7-Hydroxy-1,2,3,4-tetrahydroquinoline

6-Hydroxy-1,2,3,4-tetrahydroisoquinoline-16-Hydroxy-1,2,3,4-tetrahydroisoquinoline-1-carboxylic acid-carboxylic acid

2-(2-Hydroxypropoxy)-1-propanol

2-Hydroxypropiophenone

4-Hydroxypropiophenone

3-Hydroxypropionitrile

trans-4-Hydroxy-L-proline methyl ester hydrochloride

L-Hydroxyproline

cis-4-Hydroxy-D-proline

trans-4-Hydroxy-D-proline