Sprintec™ (norgestimate and ethinyl estradiol tablets) Tablets are a combination oral contraceptive containing the progestational compound norgestimate and the estrogenic compound ethinyl estradiol.

NegGram, brand of nalidixic acid, is a quinolone antibacterial agent for oral administration. Nalidixic acid is 1-ethyl-1, 4-dihydro-7-methyl-4-oxo-1, 8-naphthyridine-3-carboxylic acid. It is a pale yellow, crystalline substance and a very weak organic acid.

Filgrastim is a human granulocyte colony-stimulating factor (G-CSF)?? produced by recombinant DNA technology. NEUPOGEN® is the Amgen Inc. trademark for Filgrastim?? which has been selected as the name for recombinant methionyl human granulocyte colony-stimulating factor (r-metHuG-CSF).

Axid® (Nizatidine, USP) is a histamine H2-receptor antagonist. Chemically, it is N-[2-[[[2-[(dimethylamino)methyl]-4-thia-zolyl]methyl]thio]ethyl]-Ni-methyl-2-nitro-1,1-ethenediamine.

Nafcillin Injection, USP is a sterile injectable product containing nafcillin which is added as Nafcillin Sodium, USP, a semisynthetic penicillin derived from the penicillin nucleus, 6aminopenicillanic acid. The chemical name of nafcillin sodium is Monosodium (2S,5R,6R)-6-(2ethoxy-1-naphthamido)-3,3-dimethyl-7-oxo-4-thia-1- azabicyclo[3.2.0]heptane-2-carboxylate monohydrate. It is resistant to inactivation by the enzyme penicillinase (beta-lactamase). The molecular formula of Nafcillin Sodium, USP is C21H21N2NaO5S•H2O. The molecular weight is 454.48. The structural formula of nafcillin sodium is as follows:

NATACYN® (natamycin ophthalmic suspension) 5% is a sterile, antifungal drug for topical ophthalmic administration. Each mL of the suspension contains: Active: natamycin 5% (50mg). Preservative: benzalkonium chloride 0.02%. Inactive: sodium hydroxide and/or hydrochloric acid (neutralized to adjust the pH), purified water. The active ingredient is represented by the chemical structure: Established name: Natamycin

Cesamet™ (nabilone) is a synthetic cannabinoid for oral administration. Nabilone as a raw material occurs as a white to off-white polymorphic crystalline powder. In aqueous media, the solubility of nabilone is less than 0.5 mg/L, with pH values ranging from 1.2 to 7.0.

NICOTROL® Inhaler (nicotine inhalation system) consists of a mouthpiece and a plastic cartridge delivering 4 mg of nicotine from a porous plug containing 10 mg nicotine. The cartridge is inserted into the mouthpiece prior to use. Nicotine is a tertiary amine composed of a pyridine and a pyrrolidine ring. It is a colorless to pale yellow, freely water-soluble, strongly alkaline, oily, volatile, hygroscopic liquid obtained from the tobacco plant. Nicotine has a characteristic pungent odor and turns brown on exposure to air or light. Of its two stereoisomers, S(-)nicotine is the more active. It is the prevalent form in tobacco, and is the form in the NICOTROL (nicotine inhalation system) Inhaler. The free alkaloid is absorbed rapidly through skin, mucous membranes, and the respiratory tract.

Sodium Chloride (sodium chloride (sodium chloride injection) injection) Injection, USP is a sterile, nonpyrogenic solution for fluid and electrolyte replenishment in single dose containers for intravenous administration. It contains no antimicrobial agents. The nominal pH is 5.5 (4.5 to 7.0). Composition, osmolarity, and ionic concentration are shown below:

Nortriptyline Hydrochloride, USP is 1-propanamine, 3-(10, 11-dihydro-5H-dibenzo [a,d] cyclohepten-5-ylidene)-N-methyl, hydrochloride. Its molecular weight is 299.8, and its molecular formula is C19H21N•HCl.