trans‐4‐Hydroxy‐l‐proline

(L-trans-4-hydroxy-proline) [51-35-4] C5H9NO3 (MW 131.13) InChI = 1S/C5H9NO3/c7-3-1-4(5(8)9)6-2-3/h3-4,6-7H,1-2H2,(H,8,9)/t3-,4+/m1/s1 InChIKey = PMMYEEVYMWASQN-DMTCNVIQSA-N Alternate Names: (2S,4R)-4-hydroxypyrrolidine-2-carboxylic acid. Physical Data: mp 274°C. Solubility: soluble in H2O, 357.8 g L−1 (20 °C). Form supplied in white crystalline powder, widely available. Handling, Storage, and Precautions wash thoroughly after handling. 4-hydroxy-l-proline is nonhazardous, nontoxic, and nonflammable. Store in a cool and dry place, a well-closed container. Avoid contact with skin and eyes.