USP Labetalol Hydrochloride RS
.
USP Lactase RS
.
USP Lactitol RS.
USP Anhydrous Lactose RS
![Click to View Structure](../images/impurity_up.gif)
.
USP Lactose Monohydrate RS
![Click to View Structure](../images/impurity_up.gif)
.
USP Lactulose RS
![Click to View Structure](../images/impurity_up.gif)
.
USP Lamivudine RS
![Click to View Structure](../images/impurity_up.gif)
.
USP Lamivudine Resolution Mixture A RS
![Click to View Structure](../images/impurity_up.gif)
.
USP Lamivudine Resolution Mixture B RS
![Click to View Structure](../images/impurity_up.gif)
.
USP Lanolin RS
.
USP Lanolin Alcohols RS
.
USP Lansoprazole RS
![Click to View Structure](../images/impurity_up.gif)
(C
16H
14F
3N
3O
2S
![](../images/chars/blank.gif)
369.36)
.
USP Lansoprazole Related Compound A RS
[2-[[[3-methyl-4-(2,2,2-trifluoroethoxy)-2-pyridyl]methyl]sulfonyl]benzimidazole
]
(C
16H
14F
3N
3O
3S
![](../images/chars/blank.gif)
385.36)
.
USP Lauroyl Polyoxylglycerides RS
.
USP Leflunomide RS.
USP Leflunomide Related Compound A RS.
USP Leflunomide Related Compound B RS.
USP Leflunomide Related Compound C RS.
USP Letrozole RS
![Click to View Structure](../images/impurity_up.gif)
.
USP Letrozole Related Compound A RS
[4,4
¢-(1
H-1,3,4-triazol-1-ylmethylene)dibenzonitrile
]
(C
17H
11N
5
![](../images/chars/blank.gif)
285.31)
.
USP l-Leucine RS
.
USP Leucovorin Calcium RS
.
USP Leuprolide Acetate RS.
USP Levalbuterol Hydrochloride RS
[(R)-
1-[(
tert-butylamino)methyl]-4-hydroxy-
m-xylene-
![](../images/chars/alpha.gif)
,
![](../images/chars/alpha.gif)
-diol hydrochloride
].
USP Levalbuterol Related Compound A RS
[4-(2-
tert-butylamino-ethyl)-2-hydroxymethyl-phenol
].
USP Levalbuterol Related Compound B RS
[![](../images/chars/alpha.gif)
[{(1,1-dimethylethyl)amino}methyl]-4-hydroxy-3-methyl-benzenemethanol
].
USP Levalbuterol Related Compound C RS
[![](../images/chars/alpha.gif)
[{(1,1-dimethylethyl)amino}methyl]-4-hydroxy-3-(methoxymethyl)-benzenemethanol
].
USP Levalbuterol Related Compound D RS
[5-[2-{(1,1-dimethylethyl)amino]-1-hydroxyethyl]-2-hydroxy-benzaldehyde
].
USP Levalbuterol Related Compound E RS
[![](../images/chars/alpha.gif)
[{(1,1-dimethylethyl)amino}methyl]-3-(ethoxymethyl)-4-hydroxy-benzenemethanol
].
USP Levalbuterol Related Compound F RS
[![](../images/chars/alpha.gif)
[{(1,1-dimethylethyl)amino}methyl]-4-(phenylmethoxy)-1,3-benzenedimethanol
].
USP Levalbuterol Related Compound G RS
[![](../images/chars/alpha.gif)
[{(1,1-dimethylethyl)amino}methyl]-4,5-dihydroxy-1,3-benzenedimethanol
].
USP Levamisole Hydrochloride RS
.
USP Levmetamfetamine RS
![Click to View Structure](../images/impurity_up.gif)
.
USP Levobunolol Hydrochloride RS
.
USP Levocabastine Hydrochloride RS.
USP Levocabastine Related Compound A RS.
USP Levocarnitine RS
![Click to View Structure](../images/impurity_up.gif)
.
USP Levocarnitine Related Compound A RS
[2-propen-1-aminium, 3-carboxy-
N,
N,
N-trimethyl-, chloride
]
(C
7H
14ClNO
2
![](../images/chars/blank.gif)
179.65)
.
USP Levodopa RS
![Click to View Structure](../images/impurity_up.gif)
.
USP Levodopa Related Compound A RS
[3-(3,4,6-trihydroxyphenyl)alanine
]
(C
9H
11NO
5
![](../images/chars/blank.gif)
213.19)
.
USP Levodopa Related Compound B RS
[3-methoxytyrosine
]
(C
10H
13NO
4
![](../images/chars/blank.gif)
211.22)
.
USP Levonordefrin RS
.
USP Levorphanol Tartrate RS
.
USP Levothyroxine RS
.
USP Lidocaine RS
![Click to View Structure](../images/impurity_up.gif)
.
USP Lincomycin Hydrochloride RS
.
USP Lindane RS
![Click to View Structure](../images/impurity_up.gif)
.
USP Linoleoyl Polyoxylglycerides RS
.
USP Liothyronine RS
![Click to View Structure](../images/impurity_up.gif)
.
USP Alpha Lipoic Acid RS.
USP Lisinopril RS
.
Add the following:
USP Lisinopril Related Compound A RS
[ (S)-2-{(3
S,8a
S)-3-(4-aminobutyl)-1,4-dioxohexahydropyrrolo[1,2-a]pyrazin-2(1
H)-yl}-4-phenylbutanoic acid
]
(C
21H
29N
3O
4
![](../images/chars/loz.gif)
387.47)
USP32
USP Lithium Carbonate RS
.
USP Loperamide Hydrochloride RS
.
USP Loracarbef RS
![Click to View Structure](../images/impurity_up.gif)
.
USP Loracarbef l-Isomer RS
.
USP Loratadine RS
![Click to View Structure](../images/impurity_up.gif)
.
USP Loratadine Related Compound A RS
[8-chloro-6,11-dihydro-11(4-piperidylidene)-5H-benzo[5,6]cyclohepta[1,2-b]
pyridine]
(C
19H
19ClN
2
![](../images/chars/blank.gif)
310.83)
.
USP Loratadine Related Compound B RS
[8-chloro-6,11-dihydro-11(N-methyl-4-piperinylidene)-5H-benzo[5,6]cyclohepta[1,2-b] pyridine]
(C
20H
21ClN
2
![](../images/chars/blank.gif)
324.88)
.
USP Lorazepam RS
![Click to View Structure](../images/impurity_up.gif)
.
USP Lorazepam Related Compound A RS
[7-chloro-5-(
o-chlorophenyl)-1,3-dihydro-3-acetoxy-2
H-1,4-benzodiazepin-2-one
]
(C
17H
12 Cl
2N
2O
3
![](../images/chars/blank.gif)
363.20)
.
USP Lorazepam Related Compound B RS
[2-amino-2
¢,5-dichlorobenzophenone
]
(C
13H
9ClNO
![](../images/chars/blank.gif)
266.13)
.
USP Lorazepam Related Compound C RS
[6-chloro-4-(
o-chlorophenyl)-2-quinazolinecarboxaldehyde
]
(C
15H
8Cl
2N
2O
![](../images/chars/blank.gif)
303.15)
.
USP Lorazepam Related Compound D RS
[6-chloro-4-(
o-chlorophenyl)-2-quinazolinecarboxylic acid
]
(C
15H
8Cl
2N
2O
2
![](../images/chars/blank.gif)
319.15)
.
USP Lorazepam Related Compound E RS
[6-chloro-4-(
o-chlorophenyl)-2-quinazoline methanol
]
(C
15H
10Cl
2N
2O
![](../images/chars/blank.gif)
305.16)
.
USP Lovastatin RS
![Click to View Structure](../images/impurity_up.gif)
.
USP Lovastatin Related Compound A RS
[[dihydro-lovastatin] [butanoic acid, 2-methyl-, 1,2,3,4,4a,7,8,8a-octahydro-3,7-dimethyl-8-[2(tetrahydro-4-hydroxy-6-oxo-2
H-pyran-2-yl)-ethyl]-1-naphthalenyl ester, [1
S-[1
![](../images/chars/alpha.gif)
(
R*),3
![](../images/chars/alpha.gif)
,7
![](../images/chars/beta.gif)
,8
![](../images/chars/beta.gif)
(2
S*,4
S*),-8
![](../images/chars/alpha.gif)
![](../images/chars/beta.gif)
]]]-
]
(C
24 H
38O
5
![](../images/chars/blank.gif)
406.56)
.
USP Loxapine Succinate RS
.
USP Lutein RS
.
USP Lycopene RS
.
USP Lynestrenol RS
[(17
![](../images/chars/alpha.gif)
)-19-Norpregn-4-en-20-yn-17-ol
]
(C
20H
28O
![](../images/chars/blank.gif)
284.42).
USP l-Lysine Acetate RS
![Click to View Structure](../images/impurity_up.gif)
.
USP l-Lysine Hydrochloride RS
.