USP Bacampicillin Hydrochloride RS
Do not dry. Keep container tightly closed.
USP Bacitracin Zinc 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 Baclofen RS
Do not dry; determine the water content titrimetrically at time of use. Keep container tightly closed.
USP Baclofen Related Compound A RS
[4-(4-chlorophenyl)-2-pyrrolidinone
]
(C
10H
10ClNO
195.65)
Do not dry before using. Keep container tightly closed, protect from light, and store in a desiccator.
USP Beclomethasone Dipropionate RS
Dry portion at 105
for 3 hours before using. Keep container tightly closed.
USP Bendroflumethiazide RS
Do not dry. Keep container tightly closed. Store in a refrigerator. Protect from moisture.
USP Benoxinate Hydrochloride RS
Dry portion at 105
for 3 hours before using. Keep container tightly closed.
USP Benzalkonium Chloride RS
After opening ampul, store in a tightly closed container.
USP Benzocaine RS
Dry portion over phosphorus pentoxide for 3 hours before using. Keep container tightly closed.
USP Benzoic Acid RS
Dry portion over silica gel for 3 hours before using. Keep container tightly closed.
USP Benzonatate RS
Do not dry. After opening ampul, store in a tightly closed, light-resistant container.
USP 1,4-Benzoquinone RS
Do not dry before using. Keep container tightly closed and store in a refrigerator, protected from light. Sonication may be necessary to dissolve the material.
USP Benzothiadiazine Related Compound A RS
[4-amino-6-chloro-1,3-benzenedisulfonamide
]
(C
6H
8ClN
3O
4S
2
285.73)
Keep container tightly closed and protected from light. Dry portion over silica gel for 4 hours before using.
USP Benztropine Mesylate RS
Dry portion at 105
for 2 hours before using. Keep container tightly closed.
USP Benzyl Alcohol RS
Do not dry before using. Store under an inert gas (nitrogen or argon) atmosphere, between 2
and 8
. Keep container tightly closed. Protect from light.
USP Benzyl Benzoate RS
Do not dry. After opening the ampul, store in a tightly closed container, protected from light.
USP 1-Benzyl-3-methyl-5-aminopyrazole Hydrochloride RS
(C
11 H
13N
3·HCl
223.71)
Keep container tightly closed and protected from light. Dry portion over silica gel for 4 hours before using.
USP Betahistine Hydrochloride RS
Dry portion at 100
to 105
for 4 hours before using. Keep container tightly closed. Very hygroscopic. Protect from light.
USP Betaine Hydrochloride RS
Do not dry. Keep container tightly closed.
USP Betamethasone RS
Do not dry. Keep container tightly closed.
USP Betamethasone Acetate RS
Do not dry; determine the water content titrimetrically at time of use. Keep container tightly closed.
USP Betamethasone Benzoate RS
Dry portion at 105
for 3 hours before using. Keep container tightly closed.
USP Betamethasone Dipropionate RS
Dry portion at 105
for 3 hours before using. Keep container tightly closed.
USP Betamethasone Sodium Phosphate RS
Do not dry. Determine the water content titrimetrically at the time of use. Keep container tightly closed. Store in a dry place. This material is hygroscopic.
USP Betamethasone Valerate RS
Do not dry. Keep container tightly closed.
USP Betaxolol Hydrochloride RS
Dry portion in vacuum at 65
for 2 hours before using. Keep container tightly closed.
USP Bethanechol Chloride RS
Dry portion at 105
for 2 hours before using. Keep container tightly closed. The dried material is hygroscopic. After drying, immediately transfer the material to a desiccator.
USP Bile Salts RS
Dry portion at 105
for 4 hours before using. Keep container tightly closed.
[CautionAvoid inhaling airborne particles.
]
USP Positive Bioreaction RS
Exercise care in handling. Prepare samples as directed in the respective USP General Test Chapters.
USP Biotin RS
Do not dry before using. Keep container tightly closed.
USP Biperiden RS
Dry portion at 105
for 3 hours before using. Keep container tightly closed. Protect from light.
USP Biperiden Hydrochloride RS
Dry portion at 105
for 3 hours. Keep container tightly closed and protected from light.
USP Bisacodyl RS
Dry portion at 105
for 2 hours before using. Keep container tightly closed.
USP Bis(2-ethylhexyl) Maleate RS
(C
20H
36O
4
340.51)
Do not dry before using. Keep container tightly closed.
USP 4,4¢-Bis[1,2,3,6-tetrahydro-4-(2-oxo-1-benzimidazolinyl)-1-pyridyl]butyrophenone RS
(C
34H
34N
6O
3
574.69)
Keep container tightly closed and protected from light. Dry portion in vacuum at 70
for 4 hours before using. Unstable material.
USP Bismuth Citrate RS
Do not dry. Keep container tightly closed and protected from light.
USP Bismuth Subsalicylate RS
Do not dry. Keep container tightly closed.
USP Bisoprolol Fumarate RS
Dry portion at 60
for 3 hours before using. Protect from light. Keep container tightly closed.
USP Bleomycin Sulfate RS
Dry portion in vacuum at a pressure not exceeding 5 mm of mercury at room temperature for 3 hours in a desiccator containing phosphorous pentoxide before using. Store in a freezer, protected from light, and allow to attain room temperature before opening. This material is very hygroscopic.
USP Bretylium Tosylate RS
Dry portion in vacuum at 75
for 2 hours before using. Keep container tightly closed.
USP Brinzolamide RS
Do not dry. Keep container tightly closed. Store in a freezer.
USP Brinzolamide Related Compound A RS
[brinzolamide
(S)-isomer
]
(C
12H
21N
3O
5S
3
383.52)
Do not dry. Keep container tightly closed. Store in a freezer.
USP Brinzolamide Related Compound B RS
[(
R-4-amino)-2,3-dihydro-2-(3-methoxypropyl)-4
H-thieno[3,2,-
e]-thiazine-6-sulfonamide-1,1-dioxide ethandioate 1:1
]
(C
10H
17N
3O
5S
3·C
2H
2O
4
445.49)
Do not dry. Keep container tightly closed. Store in a freezer.
USP Bromocriptine Mesylate RS
This material is hygroscopic. Determine the volatiles content by TGA, heating a separate 510 mg portion from 25
to 160
at 10
per minute under nitrogen flowing at about 45 mL per minute. Keep container tightly closed, protected from light, and store in a cold place.
USP Bromodiphenhydramine Hydrochloride RS
Dry portion at 105
for 3 hours before using. Keep container tightly closed.
USP 8-Bromotheophylline RS
[8-bromo-3,7-dihydro-1,3-dimethyl-1
H-purine-2,6-dione
]
(C
7H
7N
4O
2Br
259.06)
Do not dry before using. For quantitative applications, determine the water content titrimetrically at the time of use. Keep container tightly closed.
USP Brompheniramine Maleate RS
Dry portion at 105
for 3 hours before using. Keep container tightly closed. Protect from light.
USP Bumetanide RS
Do not dry before using. Keep container tightly closed. Protect from light.
USP Bumetanide Related Compound A RS
[3-amino-4-phenoxy-5-sulfamoylbenzoic acid
]
(C
13H
12N
2O
5S
308.31)
Do not dry before using. Keep container tightly closed.
USP Bumetanide Related Compound B RS
[3-nitro-4-phenoxy-5-sulfamoylbenzoic acid
]
(C
13H
10N
2O
7S
338.29
Do not dry before using. Keep container tightly closed.
USP Bupivacaine Hydrochloride RS
Do not dry; determine the water content titrimetrically at the time of use. Keep container tightly closed.
USP Buprenorphine Hydrochloride RS
Do not dry before using. Keep container tightly closed and protected from light.
USP Buprenorphine Related Compound A RS
[21-[3-(1-propenyl)]-7
-[(S)-1-hydroxy-1,2,2-trimethylpropyl]-6,14-
endo-ethano-6,7,8,14-tetrahydrooripavine
]
(C
29H
41NO
4
467.65)
Do not dry before using. Keep container tightly closed and protected from light.
USP Bupropion Hydrochloride RS
Do not dry. Keep container tightly closed. Store in a refrigerator.
Change to read:
USP Bupropion Hydrochloride Related Compound A RS
[2-(
tert-butylamino)-4
¢-chloropropiophenone hydrochloride
]
(C
13H
18ClNO·HCl
276.21)
Do not dry.
Keep container tightly closed. Protect from light. Store in a freezer.
USP29
Change to read:
USP Bupropion Hydrochloride Related Compound B RS
[2-(
tert-butylamino)-3
¢-bromopropiophenone hydrochloride
]
(C
13H
18BrNO·HCl
320.66)
Do not dry.
Keep container tightly closed. Protect from light. Store in a refrigerator.
USP29
Change to read:
USP Bupropion Hydrochloride Related Compound C RS
[1-(3-chlorophenyl)-2-hydroxy-1-propanone
]
(C
9H
9O
2Cl
184.62)
Do not dry.
Protect from light. Store in a freezer. After opening ampul, store in a tightly closed container.
USP29
Delete the following:
USP Bupropion Hydrochloride Related Compound D RS
[2-(
tert-butylamino)propiophenone hydrochloride
]
(C
13H
19NO·HCl
241.76)
Do not dry. Store at 5
.
USP29
Delete the following:
USP Bupropion Hydrochloride Related Compound E RS
[1-(3-chlorophenyl)-1,2-propandione
]
(C
9H
7O
2Cl
182.61)
Do not dry. Store at 5
.
USP29
Change to read:
USP Bupropion Hydrochloride Related Compound F RS
[1-(3-chlorophenyl)-1-hydroxy-2-propanone
]
(C
9H
9O
2
184.62)
Do not dry.
Protect from light. Store in a freezer. After opening ampul, store in a tightly closed container.
USP29
USP Buspirone Hydrochloride RS
Do not dry. After opening, store in a desiccator. Keep container tightly closed and protected from light. Store in a refrigerator.
USP Butabarbital RS
Keep container tightly closed. Dry portion at 105
for 4 hours before using.
USP Butalbital RS
Dry portion in vacuum at room temperature to constant weight before using. Keep container tightly closed.
USP Butamben RS
Dry portion over phosphorus pentoxide for 3 hours before using. Keep container tightly closed.
USP Butoconazole Nitrate RS
Dry portion in vacuum at 60
for 3 hours before using. Keep container tightly closed. Protect from light.
USP Butorphanol Tartrate RS
Do not dry; determine the water content titrimetrically at time of use. Keep container tightly closed.
USP 2-tert-Butyl-4-hydroxyanisole RS
(C
11H
16O
2
180.25)
Do not dry before using. Keep container tightly closed. Store in a cool place. Protect from light.
USP 3-tert-Butyl-4-hydroxyanisole RS
(C
11H
16O
2
180.25)
Do not dry before using. Keep container tightly closed. Store in a cool place. Protect from light.
USP Butyl 3-(butylamino)-4-phenoxy-5-sulfamoylbenzoate RS
(C
21H
28N
2O
5S
420.53)
Do not dry before using. Keep container tightly closed.
USP Butylparaben RS
Do not dry. Keep container tightly closed.