SPL Set ID: 3e4e5371-d796-47c7-95c1-d99e82a0b282
1 drug(s) with this SPL Set ID
Naproxen USP is a proprionic acid derivative related to the arylacetic acid group of nonsteroidal anti-inflammatory drugs. The chemical names for naproxen USP and naproxen sodium USP are (S)-6-methoxy-α-methyl-2-naphthaleneacetic acid and (S)-6-methoxy-α-methyl-2-naphthaleneacetic acid, sodium salt, respectively. Naproxen USP and naproxen sodium USP have the following structures, respectively: Naproxen USP has a molecular weight of 230.26 and a molecular formula of C 14 H 14 O 3 . Naproxen sodium USP has a molecular weight of 252.23 and a molecular formula of C 14 H 13 NaO 3 . Naproxen USP is an odorless, white to off-white crystalline substance. It is lipid-soluble, practically insoluble in water at low pH and freely soluble in water at high pH. The octanol/water partition coefficient of naproxen USP at pH 7.4 is 1.6 to 1.8. Naproxen sodium USP is a white to creamy white, crystalline solid, freely soluble in water at neutral pH. Naproxen tablets USP are available as light orange colored tablets containing 375 mg of naproxen USP and light orange colored tablets for oral administration. The inactive ingredients are microcrystalline cellulose, croscarmellose sodium, iron oxides, povidone and magnesium stearate. chemical-structure