Impurities

Impurities List

Sr. No. Impurity Name  CAS No.
Ibuprofen
1  Ibuprof.en Impurity A  66622-47-7
2  Ibuprofen Impurity  B  3585-49-7
3   Ibuprofen Impurity C  59512-17-3
4 Ibuprofen Impurity D  938-94-3
5  Ibuprofen Impurity E  38861-78-8
6   Ibuprofen Impurity L  53949-53-4
7  Ibuprofen Impurity  M  60057-62-7
8  Ibuprofen Impurity N  3585-52-2
9   Ibuprofen Impurity J 65813-55-0
10   Ibuprofen Impurity P 36039-36-8
11   Ibuprofen Impurity F  65322-85-2
  Celecoxib  
12 Celecoxib Impurity A 170570-01-1
13 Celecoxib Impurity B 331943-04-5
14 Celecoxib Methyl P-toluate  99-75-2
15 Celecoxib Impurity 2  948293-46-7
16 Celecoxib Impurity C (2-methyl Celecoxib)  170569-99-0
17 Celecoxib Impurity 7 (2,4 Dimethylcelecoxib)  170570-09-9
Dronederone
18  N-DesbutylDronederone  197431-02-0
19 Dronedarone Hydrochloride Impurity A
20  Paroxetine EP Impurity-G 1012886-75-7
Trazadone
21 Trazadone impurity A 55290-68-1
22 Trazadone impurity B  62337-66-0
23 Trazadone impurity C  NA
24 Trazadone impurity D 1263278-80-3
25 Trazadone impurity F 39577-43-0
Fenofibrate
26 Fenofibrate EP Impurity D 42019-07-8
27 Fenofibrate EP Impurity A  10547-60-1
28 Fenofibrate EP Impurity B(Fenofibric acid) 42017-89-0
29 Fenofibrate EP Impurity E 42019-08-9
30 Fenofibrate Related Compound A  42019-78-3
31 Fenofibrate EP Impurity C 217636-47-0
32 Fenofibrate EP Impurity F 154356-96-4
33 Fenofibrate EP Impurity G  217636-48-1
  Metformin  
34  Metformin EP Impurity F HCl 506-59-2
35  Metformin EP Impurity A 461-58-5
36  Metformin Impurity D 108-78-1
37   Metformin EP Impurity C 1985-46-2
38  Metformin Impurity E 36801-25-9
Ondansetron
39  Ondansetron EP Impurity G 99614-03-6
40 Ondansetron Impurity C  27387-31-1
41  Ondansetron EP Impurity A 153139-56-1
42  Ondansetron EP Impurity F 693-98-1
43  Ondansetron EP Impurity D 99614-64-9
  Olanzapine  
44 Olanzapine EP Impurity A  138564-59-7
45 Olanzapine N oxide 174794-02-6
  Simvasatin  
46 SimvasatinEp Imp A  101314-97-0
47  Simvastatin EP Impurity B 145576-25-6
48  Simvastatin Acid Ammonium Salt 139893-43-9
  Setraline  
49 SetralineEp Imp A 79617-99-5
  Clopidogrel  
50 Clopidogrel Related Compound C  120202-71-3
51 Clopidogrel EP Impurity A 144750-42-5
52 Clopidogrel Related Compound B 144750-52-7
  Baclofen  
53  Baclofen Impurity 1  35271-74-0
  Palonosetron  
54 Palonosetron Related Compound A  813425-83-1
55 Palonosetron Related Compound B 1021456-82-5
  Irinotecan  
56  7,11-Diethyl-10-hydroxycamptothecin  947687-01-6
57  7-Ethyl-10-hydroxycamptothecin 86639-52-3
  Fingolimod  
58 FingolimodPalmitate Amide 1242271-26-6
59 Fingolimodsterate Amide 1242271-27-7
  Rizatriptan  
60 Rizatriptan EP Impurity C 208941-96-2
  CLOBAZAM  
61 Clobazam EP Impurity A 22316-55-8
62 Clobazam EP Impurity B  22316-24-1
63 Clobazam EP Impurity C 22316-16-1
64 Clobazam EP Impurity D NA
65  1-(4-Aminobenzyl)1,2,4triazole  119192-10-8
  TIMOLOL  
66  TIMOLOL EP Impurity F 30165-96-9
67 TIMOLOL EP Impurity D 30165-97-0
  Fluoxetine  
68 Fluoxetine related compound B 23580-89-4
69 Fluoxetine related compound C 1026723-45-4
  DULOXETINE  
70  Duloxetine EP Impurity B 116539-55-0
71  Duloxetine EP Impurity D 90-15-3
72   Duloxetine EP Impurity G 321-38-0
73  Duloxetine Impurity 4( Racemic) NA
74  Duloxetine salt 645411-16-1
  DIAZEPAM  
75  Diazepam EP Impurity B 6021-21-2
76 Diazepam EP Impurity E 20927-53-1
77  DIAZEPAM – IMPURITY A 1088-11-5
78   DIAZEPAM – IMPURITY D 1022-13-5
79  DIAZEPAM – IN HOUSE IMPURITY 784-41-8
  LEVITIRACETAM  
80 Levitiracetam Related compound A 102767-31-7
  OLMESARTAN  
81 Olmesartan EP Impurity C 879562-26-2
82 Olmesartan EP Impurity D 1020157-01-0
83 Olmesartan EP impurity A 144689-24-7
84 Olmesartan Impurity 4 1443544-27-1
85 OlmesartanMedoxomil Impurity 5 80841-78-7
86  4-Acetyl-2-propyl-1H-imidazole-5- 144690-07-3
carboxylic acid ethyl ester
87 Olmesartan EP impurity B  849206-43-5
88 Olmesartan Ethyl Ester 144689-23-6
  MycophenolateMofetil  
89 MycophenolateMofetil related compound B  26675-76-3
  Desloratadine  
90 Desloratadine N-Methyl Impurity 38092-89-6
91 Desloratadine N-Formyl Impurity 117810-61-4
  Raltegravir  
92 Raltegravir EP impurity G NA
  Moxifloxacin  
93 Moxifloxacin Related Compound A 151213-15-9
  Donepezil  
94  Donepezil Related Compound A 120014-07-5
  Meloxicam  
95 Meloxicam USP Related Compound A  24683-26-9
96 Meloxicam EP Impurity B 7305-71-7
97  Meloxicam EP Impurity E 35511-15-0
  Pyridoxine  
98 Pyridoxine Impurity B 148-51-6
  Trimethoprim  
99  Trimethoprim EP Impurity H  1916-07-0
100 Trimethoprim EP Impurity J  118-41-2
  Lamivudine  
101  Lamivudine EP Impurity C 69-72-7
102 Lamivudine EP Impurity E 71-30-7
  Losartan  
103  Losartan EP Impurity C 114799-13-2
  Omeprazole  
104  Omeprazole Ep impurity I 158812-85-2
105  Omeprazole EP Impurity D 88546-55-8
  Ciprofloxacin  
106  Ciprofloxacin EP Impurity C 528851-31-2
  Budesonide  
107  21 dehydro Budesonide  85234-63-5
  Benzothiadiazine  
108 Benzothiadiazine Related Compound A  121-30-2
  Sumatriptan  
109 Sumatriptan N-Oxide (92 %) 212069-94-8
  Valsartan  
110 Valsartan related compound B 952652-79-8
  Lacosamide  
111 Lacosamide imp K 86921-49-5
  Ketoconazole  
112 Ketoconazole EP Impurity C 83374-59-8
113  Ketoconazole EP Impurity E 134071-44-6
114 1-Acetyl-4-(4-hydroxyphenyl)piperazine 67914-60-7
115 Ketoconazole Trans Tosylate
  Etoricoxib  
116 DesmethylEtoricoxib  202409-31-2
  Orlistat  
117 Orlistat Open Ring amide impurity NA
118 Orlistat Open Ring Epimer impurity 130793-28-1
119 Orlistat Open Ring Acid impurity (84% 130676-66-3
Purity)
120 (S)-3-Hexyl-5,6-dihydro-6-undecyl-2Hpyran- 130676-64-1
2-one
121 Orlistat USP Related Compound D 130793-27-0
  Fulvestrant  
122 FulvestrantInt-TBDMS chain NA
123 Fulvestrant Side chain impurity  148757-89-5
  Sildenafil  
124  Sildenafil EP Impurity B 1094598-75-0
  Tofacitinib  
125 Tofacitinib Impurity R 479633-63-1
126 Tofacitinib Impurity Q 3680-69-1
  Sitagliptin  
127  3-(Trifluoromethyl)-5,6,7,8-tetrahydro- 762240-92-6
[1,2,4]triazolo[4,3-a]pyrazine
Hydrochloride
128 N-BocSitagliptin Acid Impurity 486460-00-8
  Bendamustine  
129 DeschloroethylBendamustine Hydrochloride  1797881-48-1
  Pramipexole  
130 Pramipexole EP Impurity A 106092-09-5
131 Pramipexole EP Impurity B 1246815-83-7
132  (S)-4,5,6,7-Tetrahydro-N2,N6-propionyl- 1346617-47-7
2,6-benzothiazolediamine
133 Pramipexole EP Impurity E 106006-84-2
  Azithromycin  
134  Azithromycin Imp-A 76801-85-9
  Valproic acid  
135 Valproic Acid EP Impurity K 5343-52-2
136 Valproic Acid EP Impurity D 52061-75-3
137 Valproic Acid EP Impurity A 109-52-4
  Folic acid  
138  Folic acid impurity B 1004-75-7
139 Folic acid impurity A 4271-30-1
  Acyclovir  
140 Aciclovir EP Impurity A 102728-64-3
141 Aciclovir EP Impurity B 73-40-5
142 Aciclovir EP Impurity G  75128-73-3
143 Aciclovir EP Impurity J 166762-90-9
144 Aciclovir EP Impurity L 3056-33-5
145 Aciclovir EP Impurity N
146 Acyclovir Impurity 3
  Mebendazole  
147 Mebendazole EP impurity A 52329-60-9
148 Mebendazole EP impurity B 21472-33-3
149 Mebendazole EP impurity E 31430-19-0
Clomiphene
150 Clomiphene EP Impurity A 19957-52-9
151 Clomiphene EP Impurity B 796-77-0
152 Clomiphene EP Impurity C 5635-70-1
153 Clomiphene EP Impurity D 1391054-64-0
154 Clomiphene EP Impurity E (Mixture of Z and E Isomers) 117884-83-0
155 Clomiphene EP Impurity F ((Mixture of Z and E Isomers) 14158-75-9
156 Clomiphene Z Isomers 7619-53-6
157 2-(4-Hydroxyphenyl)-1,2-diphenyl-ethanone 5543-98-6
158 Chlorostilbene 948-99-2
159 Desethylclomiphene  1310815-19-0
160 Clomiphene Dimer NA
161 Des-N,N-diethylethanamine 4-Hydroxyclomiphene 53775-07-8
162 4-Hydroxy-α,β-diphenylbenzeneethanol 94549-25-4
163 Clomiphene EP Impurity G, H Citrate (Mixture of Z and E Isomers) 1795130-18-5
Levofloxacin
164 Levofloxacin EP Impurity F 100986-89-8