USP Acebutolol Hydrochloride RS
Dry portion at 105
for 3 hours before using. Keep container tightly closed.
USP Acepromazine Maleate RS
Dry portion at 105
for 4 hours before using. Keep container tightly closed and protected from light.
USP Acesulfame Potassium RS
Do not dry. Keep container tightly closed.
USP Acetaminophen RS
Dry portion over silica gel for 18 hours before using. Keep container tightly closed and protected from light.
USP Acetanilide Melting Point RS
Dry portion over sulfuric acid for 16 hours before using. When melted by the capillary tube method,
Class Ia in the general chapter
Melting Range or Temperature 741, the observed range falls within the indicated acceptance range. Keep container tightly closed.
USP Acetazolamide RS
Dry portion at 105
for 4 hours before using. Keep container tightly closed.
USP Acetohexamide RS
Dry portion at 105
for 3 hours before using. Keep container tightly closed.
USP Acetohydroxamic Acid RS
Dry portion over phosphorus pentoxide for 16 hours before using. Keep container tightly closed, and store in a desiccator in a cool place.
USP -d-2-Acetoxy-4-dimethylamino-1,2-diphenyl-3-methylbutane RS
(NAME CHANGE) See
USP Propoxyphene Related Compound B RS.
USP Acetylcholine Chloride RS
Dry portion at 105
for 3 hours before using. Once opened, store in a desiccator, and keep container tightly closed. This material is extremely hygroscopic.
USP Acetylcysteine RS
Dry portion at a pressure of about 50 mm of mercury at 70
for 4 hours before using. Keep container tightly closed.
USP Acetyltributyl Citrate RS
Do not dry before using. After opening the ampul, keep the material in a tightly closed container.
USP Acetyltriethyl Citrate RS
Do not dry before using. After opening the ampul, keep the material in a tightly closed container.
USP Acyclovir RS
Do not dry; determine the water content titrimetrically at the time of use for quantitative analyses. Keep container tightly closed.
USP Adenine RS
Dry portion at 110
for 4 hours before using. Keep container tightly closed and protected from light.
USP Adenosine RS
Keep container tightly closed and protected from light.
USP Adipic Acid RS
Dry portion at 105
to constant weight before using. Keep container tightly closed.
USP Agigenin RS
Do not dry before using. Keep container tightly closed. Protect from light. Store in a freezer.
Add the following:
USP Agnuside RS
This material is hygroscopic. Keep container tightly closed. Protect from light. Store in a desiccator.
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USP AirHelium RS.
USP L-Alanine RS
Dry portion at 105
for 3 hours before using. Keep container tightly closed.
USP Albendazole RS
Dry portion at 105
for 4 hours before using. Keep container tightly closed.
USP Albuterol RS
Do not dry before using. Keep container tightly closed and protected from light.
USP Albuterol Sulfate RS
Do not dry before using. Keep container tightly closed and protected from light.
USP Alclometasone Dipropionate RS
Do not dry before using. Keep container tightly closed.
USP Alcohol RS
After opening ampul, store the unused portion in a tightly closed container. Protect from light. This material is hygroscopic.
USP Dehydrated Alcohol RS
After opening ampul, store the unused portion in a tightly closed container. Protect from light. This material is hygroscopic.
USP Alcohol DeterminationAcetonitrile RS
Acetonitrile in water. Dispose of unused portion after opening.
USP Alcohol DeterminationAlcohol RS
Alcohol solution in water. Dispose of unused portion after opening.
USP Alendronate Sodium RS
Do not dry. This is the trihydrate form of alendronate sodium. Keep container tightly closed. After opening, store in a desiccator at room temperature.
USP Alfentanil Hydrochloride RS.
USP Allantoin RS
Do not dry. Keep container tightly closed.
USP Alliin RS
Do not dry before using. Keep container tightly closed, and store in a refrigerator. After opening, store the container in a desiccator in a refrigerator.
USP Allopurinol RS
Dry portion in vacuum at 105
for 5 hours before using. Keep container tightly closed.
USP Allopurinol Related Compound A RS
[3-amino-4-carboxamidopyrazole hemisulfate
]
(C
4H
6N
4O)
2·H
2SO
4
350.32)
Dry portion in vacuum at 105
for 3 hours before using. Keep container tightly closed.
USP S-Allyl-L-Cysteine RS
Do not dry before using. Keep container tightly closed. Store in a freezer.
USP Alprazolam RS
Do not dry before using. Keep container tightly closed.
USP Alprostadil RS
Do not dry before using. Keep container tightly closed, and store in a freezer.
USP Alteplase RS.
USP Altretamine RS
Do not dry before using. Determine the water content titrimetrically at the time of use. Keep container tightly closed.
USP Dried Aluminum Hydroxide Gel RS
Do not dry before using. Keep container tightly closed.
USP Amantadine Hydrochloride RS
Do not dry before using. Keep container tightly closed.
USP Amcinonide RS
Do not dry before using. Keep container tightly closed. Store in a refrigerator.
USP Amifostine RS
Do not dry.
USP Amifostine Disulfide RS
[1,3-propanediamine,
N,N-(dithiodi-2,1 ethanediyl)bis, tetrahydrochloride
]
(C
10H
30N
4S
2Cl
4
412.32)
Do not dry. Keep container tightly closed. Store in a freezer.
USP Amifostine Thiol RS
[ethanethiol, 2-[(3-aminopropyl)amino]-, dihydrochloride
]
(C
5H
16N
2SCl
2
207.17)
Do not dry. Keep container tightly closed. Store in a freezer.
USP Amikacin RS
Do not dry before using. Keep container tightly closed, protected from light, and store in a cold place.
USP Amiloride Hydrochloride RS
Using thermogravimetric analysis (see
Thermal Analysis 891), heat a 10-mg portion, accurately weighed, at 10
per minute between ambient temperature and 225
under nitrogen flowing at 40 mL per minute. From the thermogram, determine the accumulated loss in weight between ambient temperature and about 200
on the plateau. Keep container tightly closed.
USP Amiloxate RS [isoamyl methoxycinnamate].
USP Aminobenzoate Potassium RS
Dry portion at 105
for 2 hours before using. Keep container tightly closed and protected from light.
USP Aminobenzoic Acid RS
Do not dry. Keep container tightly closed. Protect from light.
USP Aminobutanol RS
(C
4H
11NO
89.14)
This material is hygroscopic. After opening ampul, store in tightly closed container. Do not dry; determine the water content titrimetrically at the time of use.
USP Aminocaproic Acid RS
Dry portion at 105
for 30 minutes before using. Keep container tightly closed.
USP N-(Aminocarbonyl)-N-[([5-nitro-2-furanyl]-methylene)-amino]-glycine RS
Do not dry before using.
USP 2-Amino-5-chlorobenzophenone RS
(C
13H
10ClNO
231.68)
Keep container tightly closed and protected from light. Dry portion over silica gel for 4 hours before using.
USP 3-Amino-6-chloro-1-methyl-4-phenylcarbostyril RS
(NAME CHANGE) See USP Diazepam Related Compound B RS.
USP 3-Amino-2,4,6-triiodobenzoic Acid RS
(C
7H
4I
3NO
2
514.83)
Dry portion at 105
for 4 hours before using. Keep container tightly closed and protected from light.
USP 5-Amino-2,4,6-triiodo-N-methylisophthalamic Acid RS
(C
9H
7I
3N
2O
3
571.88)
Dry portion at 105
for 4 hours before using. Keep container tightly closed and protected from light.
USP Aminoglutethimide RS
Dry portion at 105
to constant weight before using. Keep container tightly closed.
USP m-Aminoglutethimide RS
Do not dry before using. Keep container tightly closed.
USP Aminohippuric Acid RS
Do not dry before using. Keep container tightly closed and protected from light. Material will discolor if exposed to light and air.
USP 5-Aminoimidazole-4-carboxamide Hydrochloride RS
(C
4 H
6N
4O·HCl
162.58)
Do not dry before using. Keep container tightly closed, protected from light, and store in a refrigerator.
USP Aminopentamide Sulfate RS
Dry at 105
for 4 hours before using.
Add the following:
USP 4-Aminophenol RS.
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USP m-Aminophenol RS
Do not dry before using. Keep container tightly closed, protected from light, and store in a cold place.
USP Aminosalicylic Acid RS
Dry portion in vacuum at 50
for 1 hour before using. Keep container tightly closed, protected from light, and store at a temperature not exceeding 30
.
USP Amitraz RS
Do not dry. Keep container tightly closed. Protect from light.
USP Amitriptyline Hydrochloride RS
Dry portion at a pressure not exceeding 5 mm of mercury at 60
to constant weight before using. Keep container tightly closed.
USP Ammonio Methacrylate Copolymer, Type A RS
Dry portion in vacuum at 80
for 5 hours before using. Keep container tightly closed.
USP Ammonio Methacrylate Copolymer, Type B RS
Dry portion in vacuum at 80
for 5 hours before using. Keep container tightly closed.
USP Ammonium Chloride RS
Dry over silica gel for 4 hours. This material is hygroscopic. Keep container tightly closed. Store at room temperature.
USP Amobarbital RS
Dry portion at 105
for 4 hours before using. Keep container tightly closed.
USP Amodiaquine Hydrochloride RS
Do not dry; determine the water content titrimetrically at the time of use. Keep container tightly closed.
USP Amoxapine RS
Dry portion at 105
for 4 hours before using. Keep container tightly closed.
USP Amoxicillin RS
Do not dry before using. This is a trihydrate form of amoxicillin. Keep container tightly closed. Protect from light, and store in a freezer.
USP Amphotericin B 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 Ampicillin RS
This is the anhydrous form of ampicillin. Before using, dry portion to constant weight in vacuum over phosphorus pentoxide at room temperature. Keep container tightly closed. Store in a cool, dry place.
USP Ampicillin Sodium RS
Do not dry before using. Hygroscopic. Keep container tightly closed. Store in a cool, dry place.
USP Ampicillin Trihydrate RS
Do not dry before using. Keep container tightly closed and protected from light. Store in a cold, dry place.
USP Amprolium RS
Dry portion at a pressure not exceeding 5 mm of mercury at 100
for 3 hours before using. Keep container tightly closed.
USP Anileridine Hydrochloride RS
Dry portion at a pressure below 5 mm of mercury at 100
for 2 hours before using. Keep container tightly closed. Protect from light.
USP Antazoline Phosphate RS
Dry portion at 105
for 4 hours before using. Keep container tightly closed.
USP Anthralin RS
Do not dry before using. Keep container tightly closed, and store in a cool place. Protect from light.
USP Antipyrine RS
Dry portion at 60
for 2 hours before using. Keep container tightly closed.
USP Apigenin-7-Glucoside RS
Do not dry. For quantitative USP applications use a value of 0.88 mg of apigenin-7-glucoside for each mg of this standard on the as-is basis. Keep container tightly closed, protected from light, and store in a freezer.
USP Apomorphine Hydrochloride RS
Dry portion at 105
for 2 hours before using. Keep container tightly closed. Protect from light.
USP Apraclonidine Hydrochloride RS
Dry portion in vacuum at 105
for 3 hours before using. Keep container tightly closed. Protect from light.
USP L-Arginine RS
Dry portion at 105
for 3 hours before using. Keep container tightly closed.
USP Arginine Hydrochloride RS
Do not dry. Keep container tightly closed.
USP Arsanilic Acid RS
Do not dry. Keep container tightly closed.
USP Ascorbic Acid RS
Do not dry. Keep container tightly closed and protected from light.
Delete the following:
USP Asparagine RS.
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Add the following:
USP Asparagine Anhydrous RS.
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Add the following:
USP Asparagine Monohydrate RS.
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USP Aspartame RS
Do not dry before using. Keep container tightly closed. Protect from light. Store in a desiccator.
USP Aspartame Acesulfame RS
Do not dry. Keep container tightly closed.
USP Aspartame Related Compound A RS
[5-benzyl-3,6-dioxo-2-piperazineacetic acid
]
(C
13H
14N
2O
4
262.27)
Do not dry. Keep container tightly closed and protected from light.
USP Aspartic Acid RS
Do not dry. Store at room temperature.
USP Aspirin RS
Dry portion over silica gel for 5 hours before using. Keep container tightly closed.
USP Astemizole RS
Dry at 105
in vacuum for 4 hours before using. Keep container tightly closed.
USP Atenolol RS
Dry portion at 105
for 3 hours before using. Keep container tightly closed.
USP Atovaquone RS
Do not dry before using.
USP Atovaquone Related Compound A RS
[cis-2[4-(4-chlorophenyl)cyclohexyl]-3-hydroxy-1,4-naphthoquinone]
Do not dry before using.
USP Atracurium Besylate RS
Do not dry; determine the water content titrimetrically at the time of use. Keep container tightly closed, and store in a cold place.
USP Atropine Sulfate RS
Do not dry before using. Determine the water content titrimetrically at the time of use. Keep container tightly closed. Protect from light.
USP Aurothioglucose RS
Dry portion over phosphorus pentoxide for 24 hours before using. Keep container tightly closed. Protect from light.
USP Avobenzone RS
Dry portion in vacuum at 70
for 4 hours before using. For quantitative applications use a value of 0.994 mg of avobenzone per mg on the dried basis. Keep container tightly closed.
USP Azaerythromycin A RS
Do not dry before using. Keep container tightly closed.
USP Azaperone RS
Dry portion in vacuum at 60
for 4 hours before using. Keep container tightly closed. Protect from light.
USP Azatadine Maleate RS
Do not dry. Keep container tightly closed.
USP Azathioprine RS
Dry portion in vacuum at 105
for 5 hours before using. Keep container tightly closed. Protect from light.
USP Azithromycin RS
Do not dry before using. Keep container tightly closed, and store in a freezer.
USP Azo-aminoglutethimide RS
Dry portion at 105
for 2 hours before using. Keep container tightly closed. Protect from light.
USP Aztreonam RS
Do not dry before using. Keep container tightly closed. Protect from light. Store in a cold place.
USP Aztreonam E-Isomer RS
Do not dry before using. Keep container tightly closed, protected from light, air, and moisture, and store in a refrigerator.
USP Open Ring Aztreonam RS
(C
18H
19N
5O
9S
2
453.46)
Do not dry before using. Keep container tightly closed, protected from light, and store in a freezer. This material is extremely hygroscopic.