nitrosoproline nitrosoproline nitrosoproline is a nitroso derivative of the amino acid proline. nitrosoproline names iupac name 1-nitroso-l-proline other names n-nitrosoproline; proline nitric oxide; proline no identifiers cas number 7519-36-0 y 3d model (jsmol) interactive image chemspider 8594734 kegg c19485 pubchem cid 10419304 unii f8mi03sgy0 y comptox dashboard (epa) dtxsid3021061 inchi inchi=1s/c5h8n2o3/c8-5(9)4-2-1-3-7(4)6-10/h4h,1-3h2,(h,8,9)/t4-/m0/s1key: wlkphjweiiaifw-bypyzucnsa-ninchi=1/c5h8n2o3/c8-5(9)4-2-1-3-7(4)6-10/h4h,1-3h2,(h,8,9)/t4-/m0/s1key: wlkphjweiiaifw-bypyzucnbf smiles o=c(o)1n(n=o)ccc1 properties chemical formula c5h8n2o3 molar mass 144.130 g·mol−1 except where otherwise noted, data are given for materials in their standard state (at 25 °c , 100 kpa). infobox references