USP Valerenic Acid RS
Do not dry before using. Keep container tightly closed. Store in a freezer.
USP Powdered Valerian RS.
USP L-Valine RS
Dry portion at 105
for 3 hours before using. Keep container tightly closed.
USP Valproic Acid RS
Do not dry. After opening ampul, store in a tightly closed container.
USP Valproic Acid Related Compound A RS
[diallylacetic acid
]
(C
8H
12O
2
140.18)
.
[WARNING! Reproductive Hazard,
Causes Irritation.] Do not dry. After opening, store in a tightly closed container. Avoid contact. Store in a refrigerator.
USP Valrubicin RS
Dry in vacuum over phosphorus pentoxide at 80
for 4 hours before using.
USP Valrubicin Related Compound A RS
[N-trifluoroacetyl-14-bromodaunorubicin-13,13-dimethylketal
]
Dry in vacuum over phosphorus pentoxide at 80
for 4 hours before using.
USP Vancomycin Hydrochloride RS
Do not dry. Constitute the entire contents, without weighing, and rinsing as necessary, for assay. Keep unopened containers tightly closed. Protect from light. Store in a cold place.
USP Vanillin RS
Dry portion over silica gel for 4 hours before using. Keep container tightly closed. Protect from light.
USP Vanillin Melting Point RS
Do not dry. When melted by the USP 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 and protected from light.
USP Vasopressin RS.
USP Vecuronium Bromide RS
Dry portion in vacuum over phosphorus pentoxide for 3 hours before using. The material is very hygroscopic. Weigh under controlled humidity conditions less than 10% relative humidity. Keep container tightly closed. Store in a refrigerator.
USP Vecuronium Bromide Related Compound A RS
[3
,17
-diacetyl-oxy-2
,16
-bispiperidinyl-5
-androstan
]
(C
33H
54N
2O
4
542.79).
USP Vecuronium Bromide Related Compound B RS
[piperidinium, 1-[(2
,3
,5
,16
,17
)-3-acetyloxy-17-hydroxy-2-(1-piperidinyl)androstan-16-yl]-1-methyl bromide
]
(C
32H
55BrN
2O
3
595.69).
USP Vecuronium Bromide Related Compound C RS
[piperidinium, 1-[(2
,3
,5
,16
,17
)-3,17-dihydroxy-2-(1-piperidinyl)androstan-16-yl]-1-methyl bromide
]
(C
30H
53BrN
2O
2
553.66).
USP Vecuronium Bromide Related Compound D RS
(C
26H
41NO
3
415.61).
USP Vecuronium Bromide Related Compound F RS
[piperidinium, 1-[(2
,3
,5
,16
,17
)-17-acetyloxy-3-hydroxy-2-(1-piperidinyl)androstan-16-yl]-1-methyl bromide
]
(C
32H
55BrN
2O
3
595.69).
USP Verapamil Hydrochloride RS
Dry portion at 105
for 2 hours before using. Keep container tightly closed. Protect from light.
USP Verapamil Related Compound A RS
[3,4-dimethoxy-
-[3- (methylamino)propyl]-
-(1-methylethyl)-benzeneacetonitrile monohydrochloride
]
(C
17H
26N
2O
2·HCl
326.87)
Do not dry before using. Keep container tightly closed. Protect from light.
USP Verapamil Related Compound B RS
[benzeneacetonitrile,
-[2-[[2-(3,4-dimethoxyphenyl)-ethyl]methylamino]ethyl]-3,4-dimethoxy-
-(1-methylethyl)-, monohydrochloride
]
(C
26H
36N
2O
4·HCl
477.05)
Do not dry before using. Keep container tightly closed. Protect from light.
USP Verteporfin RS
(C
41H
42N
4O
8
718.79)
This is a mixture of 23
H,25
H-benzo[
b]porphine-9,13-dipropanoic acid, 18-ethenyl-4,4a-dihydro-3,4-bis(methoxycarbonyl)-4a,8,14,19-tetramethyl, 9-methyl ester,
trans-(±) and 23
H,25
H-benzo[
b]porphine-9,13-dipropanoic acid, 18-ethenyl-4,4a-dihydro-3,4-bis(methoxycarbonyl)-4a,8,14,19-tetramethyl-, 13-methyl ester,
trans-(±). Determine the water content titrimetrically at the time of use. Preserve in tight containers, and store in a freezer.
USP Verteporfin Related Compound A RS
[trans-(±)-18-ethenyl-4,4a-dihydro-3,4-bis(methoxycarbonyl)-4a,8,14,19-tetramethyl-23
H,25
H-benzo[
b]porphine-9,13-dipropionic acid
]
(C
40H
40N
4O
8
704.77)
Do not dry before using. Keep container tightly closed and protected from light.
USP Vidarabine RS
This is the monohydrate form of Vidarabine. Do not dry before using. Keep container tightly closed. Protect from light. Store in a cold place.
USP Vinblastine Sulfate RS
Equilibrate to ambient temperature before opening. After opening ampul, allow the contents to equilibrate for 30 minutes with the ambient humidity before weighing for analyses. Using thermogravimetric analysis, heat a separate equilibrated 10-mg portion at 5
per minute between ambient temperature and 200
under nitrogen flowing at 40 mL per minute (see
Thermal Analysis 891). From the thermogram, determine the accumulated loss in weight between ambient temperature and a point on the plateau before decomposition is indicated (at about 160
). Keep the containers tightly closed and protected from light, and store in a cold place.
USP Vincristine Sulfate RS
Store unopened ampul in a cold place. After opening ampul, allow the contents to equilibrate for 30 minutes with the ambient humidity before weighing for analysis. Using thermogravimetric analysis, heat a separate equilibrated 10-mg portion at 5
per minute between ambient temperature and 200
under nitrogen flowing at 40 mL per minute. From the thermogram, determine the accumulated loss in weight between ambient temperature and a point on the plateau before decomposition is indicated (at about 160
). Keep the containers tightly closed and protected from light, and store in a cold place.
USP Vinorelbine Related Compound A RS
[4-
O-deacetylvinorelbine
]
(C
43H
52N
4O
7·2C
4H
6O
6
1037.07)
Do not dry. Keep under inert gas with container tightly closed. Protect from light. Store in a freezer.
USP Vinorelbine Tartrate RS
Do not dry. Keep under inert gas with container tightly closed. Protect from light. Store in a freezer.
USP Vitamin A RS
To use, snip off end of the capsule, expel and weigh the solution. Discard the unused portion after opening individual capsules. Keep container tightly closed, and store in a cool, dry place, or in a refrigerator, protected from light.
USP Vitamin D Assay System Suitability RS
Do not dry. Allow it to attain room temperature before opening ampul. Transfer unused contents of ampul to a tightly closed container, and store under nitrogen in the dark, in a cool place.
USP Vitexin RS
Do not dry. Keep container tightly closed. Protect from light. Store in a cold, dry place.