Naproxen Standard

(S)-Naproxen; (S)-6-Methoxy-α-methyl-2-naphthaleneacetic Acid; po-Naproxen; Aproxen; Bonyl; Reuxen; Veradol; Xenar; Xenar-CR; d-2-(6-Methoxy-2-naphthyl)propionic Acid;2-Naphthaleneacetic acid, 6-methoxy-α-methyl-, (S); (+)-(S)-6-Methoxy-α-methyl-2-naphthaleneacetic acid (USP); (S)-6-Methoxy-alpha-methyl-2-naphthaleneacetic acid