USP Nabumetone RS
Do not dry. Keep container tightly closed. Store in a cold place.
USP Nabumetone Related Compound A RS
[1-(6-methoxy-2-naphthyl)-but-1-en-3-one
]
(C
15H
14O
2
226.27)
Do not dry. Keep container tightly closed. Protect from light. Store in a refrigerator.
USP Nadolol RS
Do not dry. Keep container tightly closed.
USP Nafcillin Sodium RS
Do not dry before using. Keep container tightly closed. Store in a cold place.
USP Naftifine Hydrochloride RS
Dry over phosphorous pentoxide at 105
for 4 hours before using. Keep container tightly closed.
USP Nalidixic Acid RS
Dry portion at 105
for 2 hours before using. Keep container tightly closed.
USP Nalorphine Hydrochloride RS
Dry portion in vacuum at 100
for 2 hours before using. Keep container tightly closed. Protect from light.
USP Naloxone RS
Dry portion at 105
to constant weight before using. Keep container tightly closed. Protect from light.
USP Naltrexone RS
Do not dry. Keep container tightly closed. Protect from light.
USP Naltrexone Related Compound A RS
[N-(3-butenyl)-noroxymorphone hydrochloride
]
(C
20H
23NO
4·HCl
377.87)
Do not dry before using. Keep container tightly closed and protected from light.
USP Nandrolone RS
Do not dry before using. Keep container tightly closed and protected from light, and store in a refrigerator.
USP Nandrolone Decanoate RS
Dry portion in vacuum over silica gel for 4 hours before using. Keep container tightly closed. Protect from light. Store in a freezer.
USP Nandrolone Phenpropionate RS
Dry portion in a suitable vacuum drying tube, using phosphorus pentoxide as the desiccant, at 80
for 3 hours before using. Keep container tightly closed. Protect from light.
USP Naphazoline Hydrochloride RS
Dry portion at 105
for 2 hours before using. Keep container tightly closed. Protect from light.
USP Naproxen RS
Dry portion at 105
for 3 hours before using. Keep container tightly closed.
USP Naproxen Sodium RS
Dry portion in vacuum at 105
for 3 hours before using. Keep container tightly closed.
USP Narasin RS.
USP Naratriptan Hydrochloride RS
Do not dry. Keep container tightly closed. Protect from light. Store in a freezer.
USP Naratriptan Related Compound A RS
[3-(1-methylpiperidin-4-yl)-1
H-indole hydrochloride
]
(C
14H
18N
2 · HCl
250.8)
Do not dry.
USP Naratriptan Related Compound B RS
[2-[3-(1-methyl-1,2,3,6-tetrahydropyridin-4-yl)-1H-indol-5-yl]ethanesulfonic acid methylamide oxalate
]
(C
17H
23N
3O
2S · C
2H
2O
4
423.5)
Do not dry.
USP Naratriptan Resolution Mixture RS
A mixture of naratriptan hydrochloride with approximately 1% of naratriptan related compound A [3-(1-methylpiperidin-4-yl)-1H-indole hydrochloride] and naratriptan related compound B [2-[3-(1-methyl-1,2,3,6-tetrahydropyridin-4-yl)-1H-indole-5-yl]ethanesulfonic acid methylamide oxalate].
USP Natamycin RS
Do not dry before using. Keep container tightly closed. Protect from light. Store in a cold place.
Add the following:
USP Near-Infrared Calibrator RS.
USP29
USP Neomycin Sulfate RS
Dry portion in vacuum at a pressure not exceeding 5 mm of mercury at 60
for 3 hours before using. Keep container tightly closed. Protect from light. Store in a cold place.
USP Neostigmine Bromide RS
Dry portion at 105
for 3 hours before using. Keep container tightly closed.
USP Neostigmine Methylsulfate RS
Dry portion at 105
for 3 hours before using. Keep container tightly closed.
Add the following:
USP Neotame RS.
USP29
Add the following:
USP Neotame Related Compound A RS
[N-[3,3-dimethylbutyl)-
L-
-aspartyl]-
L-phenylalanine
].
USP29
USP Netilmicin Sulfate RS
Do not dry before using; determine the volatiles content by heating a separate 100-mg portion at 110
at a pressure of 5 mm of mercury or less for 3 hours. Keep container tightly closed. Protect from light. Store in a freezer.
USP Nevirapine Anhydrous RS
Do not dry. Keep container tightly closed.
USP Nevirapine Hemihydrate RS
Do not dry. Keep container tightly closed.
USP Nevirapine Related Compound A RS
[5,11-dihydro-6
H-11-ethyl-4-methyl-dipyrido[3,2-
b:2
¢,3
¢-
e][1,4]diazepin-6-one
]
(C
14H
14N
4O
254.29)
Do not dry. Keep container tightly closed.
USP Nevirapine Related Compound B RS
[5,11-dihydro-4-methyl-6
H-dipyrido[3,2-
b:2
¢,3
¢-
e][1,4]diazepin-6-one
]
(C
12H
10N
4O
226.23)
Do not dry. Keep container tightly closed.
USP Niacin RS
Do not dry. Keep container tightly closed.
USP Niacinamide RS
Dry portion over silica gel for 4 hours before using. Keep container tightly closed.
USP Nicotine Bitartrate Dihydrate RS
Do not dry; determine the water content titrimetrically at time of use for quantitative analyses. Keep container tightly closed.
USP Nifedipine RS
Do not dry. Keep container tightly closed. Avoid exposure to light. Handle with care.
USP Nifedipine Nitrophenylpyridine Analog RS
[dimethyl 4-(2-nitrophenyl)-2,6-dimethylpyridine-3,5-dicarboxylate
]
(C
17H
16N
2O
6
344.33)
Do not dry. Keep container tightly closed. Protect from light.
USP Nifedipine Nitrosophenylpyridine Analog RS
[dimethyl 4-(2-nitrosophenyl)-2,6-dimethylpyridine-3,5-dicarboxylate
]
(C
17H
16N
2O
5
328.33)
Do not dry. Keep container tightly closed. Protect from light.
USP Nimodipine RS.
USP Nimodipine Related Compound A RS
[(2-methoxyethyl-1-methylethyl-2,6-dimethyl-4-(3-nitrophenyl)pyridine-3,5-dicarboxylate
]
(C
21H
25N
2O
7
416.42).
USP Nitrofurantoin RS
Dry portion at 140
for 30 minutes before using. Keep container tightly closed. Protect from light.
Add the following:
USP Nitrofurantoin Related Compound A RS
[N-(aminocarbonyl)-
N-[([5-nitro-2-furanyl]methylene)amino]glycine
]
Do not dry. Keep container tightly closed. Protect from light.
USP29
USP Nitrofurazone RS
Dry portion at 105
for 1 hour before using. Keep container tightly closed. Protect from light. Avoid exposure to direct sunlight, to strong fluorescent lighting, to excessive heat, and to alkaline materials.
USP Nitrofurazone Related Compound A RS [5-nitro-2-fufuraldazine]
(C
10H
6N
4O
6
278.18)
Dry portion at 105
for 1 hour before using. Keep container tightly closed. Protect from light.
USP Nitrofurfural Diacetate RS
(C
9H
9NO
7
243.17)
Do not dry. Keep container tightly closed. Protect from light.
USP Nitrogen RS.
USP 5-Nitro-2-furfuraldazine RS
(NAME CHANGE) See USP Nitrofurazone Related Compound A RS.
USP Diluted Nitroglycerin RS
[CautionHandle with care; may be exploded by percussion or excessive heat.
] Do not dry; each ampul contains approximately 200 mg of a 1.00% solution (w/w) of nitroglycerin in propylene glycol. Store unopened ampuls at 4
; allow to equilibrate to room temperature before opening ampul. Once opened, protect from moisture and light, and use promptly. Discard any unused portion.
USP Nitrous Oxide RS.
USP Nizatidine RS
Dry portion at 100
for 1 hour before using. Keep container tightly closed and protected from light.
USP Nonoxynol 9 RS
Do not dry. Once opened, take precautions against contact with air. Keep container tightly closed.
USP Nordazepam RS
[7-chloro-1,3-dihydro-5-phenyl-2
H-1,4-benzodiazepin-2-one
]
(C
15H
11ClN
2O
270.72)
Do not dry before using. Keep container tightly closed. Protect from light.
USP Norepinephrine Bitartrate RS
Do not dry. This is the monohydrate form of norepinephrine bitartrate. Keep container tightly closed. Protect from light.
USP Norethindrone RS
Do not dry. Keep container tightly closed.
USP Norethindrone Acetate RS
Dry portion at 105
for 3 hours before using. Keep container tightly closed.
USP Norethynodrel RS
Do not dry before using. Keep container tightly closed.
USP Norfloxacin RS
Dry portion in vacuum at a pressure not exceeding 5 mm of mercury at 100
for 2 hours before using. Keep container tightly closed. Protect from light.
USP Norgestimate RS
Dry a portion at 105
for 3 hours. Keep containers tightly closed.
USP Norgestrel RS
Do not dry. Keep container tightly closed.
USP Noroxymorphone Hydrochloride RS
Do not dry before using. Keep container tightly closed. Protect from light.
USP Norphenylephrine Hydrochloride RS.
USP Nortriptyline Hydrochloride RS
Dry portion at 105
for 3 hours before using. Keep container tightly closed. Protect from light.
USP Noscapine RS
Do not dry; determine the water content titrimetrically at time of use. Keep container tightly closed.
USP Novobiocin RS
Dry portion in vacuum at a pressure not exceeding 5 mm of mercury at 100
for 4 hours before using. Keep container tightly closed. Protect from light. Store in a cold place.
USP Nystatin RS
Dry portion in vacuum at a pressure not exceeding 5 mm of mercury at 40
for 2 hours before using. Keep container tightly closed. Protect from light. Store in a freezer.