07506

(S)-Naproxen ethyl ester

pharmaceutical impurity standard

• Synonym(s): Naproxen impurity F (PhEur), (2S)-2-(6-Methoxy-2-naphthyl)propionic acid ethyl ester, Ethyl (αS)-6-methoxy-α-methyl-2-naphthaleneacetate, Ethyl (2S)-2-(6-methoxy-2-naphthyl)propionate
• Empirical Formula (Hill Notation): C₁₆H₁₈O₃
• CAS Number: 31220-35-6
• Molecular Weight: 258.31
• MDL number: MFCD12031842
• UNSPSC Code: 12352200
• PubChem Substance ID: 329748459
• NACRES: NA.24

Properties

• Quality Level: 100
• API family: naproxen
• assay: ≥98.0% (HPLC)
• optical activity: [α]/D 48±4°, c = 0.1 in chloroform
• shelf life: limited shelf life, expiry date on the label
• impurities: ≤0.5% water
• application(s): pharmaceutical (small molecule)
• format: neat
• storage temp.: 2-8°C
• SMILES string: C[C@H](C(OCC)=O)C1=CC2=CC=C(OC)C=C2C=C1
• InChI: 1S/C16H18O3/c1-4-19-16(17)11(2)12-5-6-14-10-15(18-3)8-7-13(14)9-12/h5-11H,4H2,1-3H3/t11-/m0/s1
• InChI key: URNAYRDBUUZOIU-NSHDSACASA-N

Safety Information

• Storage Class: 13 - Non Combustible Solids
• wgk_germany: WGK 3
• flash_point_f: Not applicable
• flash_point_c: Not applicable