OPULENT PHARMA IMPURITY STOCK LIST - B

OPULENT PHARMA IMPURITY STOCK LIST UPDATED OCTOBER 2019
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A-Z
IMPURITY STOCK LIST
CAS NUMBER
B
Product: BACLOFEN IMPURITIES

B
Baclofen EP Impurity A 
22518-27-0
B
Baclofen EP Impurity B
1141-23-7
B
Baclofen Impurity 1
35271-74-0
B
Chlorophenylglutaric acid anhydride
53911-68-5
B
4-(4-Chlorophenyl)-2,6-piperidinedione
84803-46-3
B
2-(4-Chlorophenyl)-4-hydroxy-4-methyl-6-oxo-1,3-Cyclohexanedicarboxylic Acid Diethyl Ester
294194-13-1
B
Butyl 4-amino-3-(p-chlorophenyl)butyrate

B
4-Amino-3-(3,4-dichlorophenyl)butyric acid

B
Dibaclofen Urea (N,N-Di[3-carboxy-2-(4-chlorophenyl)-propyl]urea)

B
Dibaclofen Urea Mono Lactum (3-(p-Chlorophenyl)-4-{[4-(p-chlorophenyl)-2-oxo-1-pyrrolidinyl]carbonylamino}butyric acid)

B
Product: BALSALAZIDE IMPURITIES

B
Balsalazide Related Compound A
1242567-07-2
1398634-47-3
B
Balsalazide Related Compound B
1242567-09-4
B
Balsalazide Isopropyl Ester
1346606-13-0
B
Balsalazide Aminobenzoyl Impurity
 7377-08-4
B
Product: BAZEDOXIFENE IMPURITIES

B
Bazedoxifene N-Oxide
1174289-22-5
B
Product: BECLOMETASONE IMPURITIES

B
Beclometasone Dipropionate EP Impurity R
981-34-0
B
Beclometasone Dipropionate EP Impurity V (Betamethasone 9,11-Epoxide 21-Propionate)
205105-83-5
B
Product: BENAZEPRIL IMPURITIES

B
Benazepril EP Impurity C/ Benazepril Related Compund C (Benazeprilat)
86541-78-8
B
Benazepril EP Impurity D/ Benazepril Related Compund D

B
Benazepril EP Impurity E/ Benazepril Related Compund E
88372-47-8
2013-07-05
B
Benazepril EP Impurity F/ Benazepril Related Compund F
109010-60-8
B
Benazepril EP Impurity G/ Benazepril Related Compund G (Benazepril Ethyl Ester)
103129-58-4
B
Product: BENDAMUSTINE IMPURITIES

B
Bendamustine Related Compound A (Bendamustine Dihydroxy Impurity)
109882-30-6
B
Bendamustine Related Compound E (Bendamustine Monohydroxy Acid Impurity)
109882-27-1
B
Bendamustine Related Compound G (Bendamustine Impurity D/ Bendamustine Thiazine Impurity)
191939-34-1
B
Bendamustine Related Compound H (Bendamustine Trichloroethyl Dimer Impurity)
1228551-91-4
B
Bendamustine Methyl Ester
109882-25-9
B
Bendamustine Hydrochloride - In house impurity
109882-31-7
B
Bendamustine Dideschloroethyl Acid Impurity
914626-62-3
B
Bendamustine Isopropyl Ester
1313020-25-5
B
Deschloroethyl Bendamustine
1219709-86-0
1797881-48-1
B
Bendamustine Deschloro Dimer Impurity/ Bendamustine Trihydroxyethyl Dimer Impurity
1391052-61-1
B
N1-Methylbenzene-1,2,4-triamine hydrochloride
60651-29-8
B
Bendamustine Dideschloroethyl Ethyl Ester
3543-73-5
B
Product: BENOXACOR IMPURITIES

B
2,2-dichloro-N-[2-(hydroxypropoxy)phenyl]acetamide

B
Product: BENZOTHIADIAZINE IMPURITIES

B
Benzothiadiazine Related Compound A (Hydrochlorothiazide EP Impurity B/ Hydrochlorothiazide Related Compound A/ Salamide/ Altizide EP Impurity A)
121-30-2
B
Product: BENZYDAMINE IMPURITIES

B
Benzydamine EP Impurity C
2215-63-6
B
Product: BESIFLOXACIN IMPURITIES

B
Besifloxacin Impurity B
101987-89-7
B
Besifloxacin Impurity G/ (R)-3-Amino-hexahydroazepine/ Besifloxacin (R)-Azepan-3-Amine Impurity
124932-43-0
B
Besifloxacin (3S)-Isomer
141388-77-4
B
(3R)-3-Aminoazepane-1-carboxylic Acid tert-Butyl Ester
1032684-85-7
B
Boc-L-serine
3262-72-4
B
Product: BETAHISTINE IMPURITIES

B
Betahistine EP Impurity A
100-69-6
B
Betahistine EP Impurity B
103-74-2
B
Betahistine EP Impurity C
2095467-43-7
5452-87-9
B
2-Pyridyl acetic Acid
13115-43-0
B
Product: BETAMETHASONE IMPURITIES

B
Betamethasone Dipropionate EP Impurity A
378-44-9
B
Betamethasone Dipropionate Impurity B (EP)/ Clobetasol Propionate Impurity-A (EP) (Betamethasone 17-Propionate)
5534-13-4
B
Betamethasone Dipropionate Impurity C (EP)/ Clobetasol Propionate Impurity-K (EP) (Betamethasone 21-Propionate)
75883-07-7
B
Betamethasone Dipropionate EP Impurity G (Betamethasone Tripropionate)
1186048-33-8
B
Betamethasone Impurity B (EP)/ Clobetasol  Propionate Impurity-G (EP)
25122-41-2
B
Betamethasone Acetate EP Impurity B (Dexamethasone EP Impurity G/ 21-O-Acetyl Dexamethasone)
1177-87-3
B
Betamethasone 9,11-Epoxide 21-Propionate (Beclometasone Dipropionate EP Impurity V)
205105-83-5
B
Betamethasone Valerate
2152-44-5
B
Product: BETAXOLOL IMPURITIES

B
Betaxolol EP Impurity A
67193-95-7
464877-45-0
B
Product: BEZAFIBRATE IMPURITIES

B
Bezafibrate EP Impurity B (Acemetacin EP Impurity A/ Indomethacin EP Impurity A/ Indomethacin Related Compound B)
74-11-3
B
Product: BICALUTAMIDE IMPURITIES

B
Bicalutamide EP Impurity A (Desfluoro Bicalutamide)
90357-05-4
B
Bicalutamide EP Impurity B (Bicalutamide 2-Fluoro Isomer)
1159977-36-2
B
Bicalutamide EP Impurity C (Bicalutamide Deshydroxy Impurity)
906008-94-4
B
Bicalutamide EP Impurity D
654-70-6 
B
Bicalutamide EP Impurity H

B
Bicalutamide EP Impurity J (Bicalutamide Sulfide)
90356-78-8
B
Bicalutamide EP Impurity K & L

B
Bicalutamide Related Compound B (Bicalutamide 3-Fluoro Isomer)
1166228-30-3
B
Product: BIFONAZOLE IMPURITIES

B
Bifonazole EP Impurity C (Clotrimazole EP Impurity D/ Enalapril EP Impurity I/ Ondansetron EP Impurity E/ Imidazole)
288-32-4
B
Product: BIMATOPROST IMPURITIES

B
Bimatoprost Acid
38344-08-0
B
15-Keto Bimatoprost
1163135-96-3
B
Bimatoprost Acid Methyl Ester
38315-47-8
B
5,6-Trans Bimatoprost
1163135-95-2
B
15-epi Bimatoprost
1163135-92-9
B
Bimatoprost isopropyl ester
130273-87-9
B
Product: BISACODYL IMPURITIES

B
Bisacodyl EP Impurity A/ Bisacodyl Related Compound A
603-41-8
B
Bisacodyl EP Impurity C/ Bisacodyl Related Compound C
72901-16-7
B
Product: BISOPROLOL IMPURITIES

B
Bisoprolol EP Impurity A (Des(isopropoxyethyl) Bisoprolol)
62572-93-4
B
Bisoprolol EP Impurity B (Bisoprolol Propyl Analog)
1447715-44-7
B
Bisoprolol EP Impurity G
1215342-36-1
B
Bisoprolol EP Impurity K (Bisoprolol Ester Impurity)
1346603-26-6
864544-37-6
B
Bisoprolol EP Impurity L
29122-74-5
B
Bisoprolol EP Impurity M
177034-57-0
B
Bisoprolol EP Impurity N
1346601-75-9
B
Bisoprolol EP Impurity Q
1346604-00-9
B
Bisoprolol EP Impurity S (4-Hydroxybenzaldehyde)
123-08-0
B
Bisoprolol Carboxylic Acid Impurity
72570-70-8
B
Bisoprolol Dimer

B
N-Formyl Bisoprolol
1447715-45-8
B
Bisoprolol Impurity 1
1346603-05-1
B
4-(2,3-Epoxypropoxy)benzaldehyde
14697-49-5
B
1,1'-[Methylenebis(4,1-phenyleneoxy)]bis[3-[(1-methylethyl)amino]-2-propanol
1225195-70-9
B
Product: BLONANSERIN IMPURITIES

B
Desfluoro Blonanserin
132810-75-4
B
Chloro Blonanserin

B
Methoxy Blonanserin

B
N-Methyl Blonanserin

B
Desethyl Blonanserin
132811-84-8
B
Blonanserin Impurity
3672-47-7
B
Blonanserin Impurity
4640-66-8
B
Blonanserin Impurity
614-16-4
B
Product: BORTEZOMIB IMPURITIES

B
Bortezomib Related Compound A/ Bortezomib Impurity D (Bortezomib R,R-Isomer Impurity)
1132709-15-9
B
Bortezomib Related Compund B/ Bortezomib Amide Analog
289472-80-6
B
Bortezomib Related Compund D/ Bortezomib Acid Analog
114457-94-2
B
Bortezomib Related Compound G (Bortezomib S,S-Isomer Impurity)
1132709-14-8
B
Bortezomib Related Compund I/ (S,R)-Bortezomib Hydroxyisopentyl Amide Analog (Bortezomib Hydroxy S,R-Isomer Impurity)
289472-78-2
B
Bortezomib Related Compund J/ (S,S)-Bortezomib Hydroxyisopentyl Amide Analog (Bortezomib Hydroxy S,S-Isomer Impurity)
289472-81-7
B
Bortezomib Impurity F/ Bortezomib Acid Methyl Ester
73058-37-4 
B
Bortezomib Impurity H
1446194-56-4
B
Bortezomib S,R-Isomer Impurity
1132709-16-0
B
Bortezomib Amino R Isomer
179324-87-9
B
Bortezomib Pinanediol Impurity
205393-22-2
B
Product: BOSENTAN IMPURITIES

B
Bosentan Related Compound A
150727-06-3
B
Bosentan Related Compound B (O-Deshydroxyethyl Bosentan)
174227-14-6
B
Bosentan Related Compound C
1097263-60-9
B
Bosentan Related Compound D
150728-13-5
B
Bosentan Related Compound E
6292-59-7
B
4-Chloro-6-[2-(1,1-dimethylethoxy)ethoxy]-5-(2-methoxyphenoxy)-2,2'-bipyrimidine
1177447-87-8
B
Product: BREXPIPRAZOLE IMPURITIES

B
Brexpiprazole 5-1H-Quinolin-2-one
2116542-20-0
B
Brexpiprazole (3,4)-Dihydro-2(1H)-quinolinone
913612-07-4
B
Brexpiprazole N-Oxide
1191900-58-9
B
Brexpiprazole Sulfoxide
1191900-51-2
B
7-(4-bromobutoxy)quinolin-2(1H)-one/ Aripiprazole Bromo Impurity
203395-59-9
B
7-(4-Hydroxybutoxy)-2(1H)-quinolinone 
1886188-97-1
B
N-(3-hydroxyphenyl)cinnamamide
616227-75-9
B
N-(3-methoxyphenyl)cinnamamide
15116-41-3
B
5-hydroxyquinolin-2(1H)-one
31570-97-5
B
1,4-Bis(benzo[b]thien-4-yl)piperazine
1420987-86-5
B
7-(4-(4-(benzo[b]thiophen-4-yl)piperazin-1-yl)butoxy)-1-(4-((2-oxo-1,2-dihydroquinolin-7-yl)oxy)butyl)quinolin-2(1H)-one
2094559-58-5
B
Piperazine-1-(4-benzofuranyl) hydrochloride
105684-85-3
B
7-(4-(4-(benzofuran-4-yl)piperazin-1-yl)butoxy)quinolin-2(1H)-one

B
1-([2,4'-bibenzo[b]thiophen]-4-yl)piperazine
2126178-13-8
B
7-(4-(4-([2,4'-bibenzo[b]thiophen]-4-yl)piperazin-1-yl)butoxy)quinolin-2(1H)-one

B
7,7'-[(1,4-Butanediyl)bis(oxy)]bis-2(1H)quinolinone
2116542-19-7
B
1-(4-(4-(benzo[b]thiophen-4-yl)piperazin-1-yl)butyl)-7-hydroxyquinolin-2(1H)-one

B
1-(4-(4-(benzo[b]thiophen-4-yl)piperazin-1-yl)butyl)-7-(4-((2-oxo-1,2-dihydroquinolin-7-yl)oxy)butoxy)quinolin-2(1H)-one

B
7-(4-(4-(2,3-dihydro-[2,4'-bibenzo[b]thiophen]-4-yl)piperazin-1-yl)butoxy)quinolin-2(1H)-one

B
7-(4-Chlorobutoxy)-1-(4-chlorobutyl)quinolin-2-one
2059954-32-2
B
1,4-bis(4-(benzo[b]thiophen-4-yl)piperazin-1-yl)butane

B
1-(Benzo[b]thiophen-4-yl)-4-(4-((2-oxo-l,2-dihydroquinolin-7-yl)oxy)butyl) piperazine 1,4-dioxide

B
1-(2,3-dihydro-[2,4'-bibenzo[b]thiophen]-4-yl)piperazine
1420987-85-4
B
1-(benzo[b]thiophen-4-yl)-4-(4-((2-oxo-1,2,3,4-tetrahydroquinolin-7-yl)oxy)butyl)piperazine 1,4-dioxide

B
1-(benzo[b]thiophen-4-yl)piperazine
846038-18-4
B
7-(4-(piperzin-1-yl)butoxy)quinolin-2(1H)-one
1849603-58-2
B
7,7'-((piperazine-1,4-diylbis(butane-4,1-diyl))bis(oxy))bis(quinolin-2(1H)-one)
2220149-92-6
B
4-Bromo benzo[b]thiophene
5118-13-8
B
7-(4-chloro butoxy)-1H-quinolin-2-one
913613-82-8
B
Benzo thiophene
95-15-8
B
Product: BRIMONIDINE IMPURITIES

B
Brimonidine EP Impurity A (Desbromo Brimonidine)
91147-43-2
B
Brimonidine EP Impurity B/ Brimonidine Related Compound A
50358-63-9
B
Brimonidine EP Impurity C (Quinoxalin-6-amine)
6298-37-9
B
Product: BRINZOLAMIDE IMPURITIES

B
Desmethyl Brinzolamide
186377-56-0
B
Brinzolamide methanesulfonyl Impurity

B
Product: BRIVUDINE IMPURITIES

B
Beta-(Z)-Brivudine (β-(Z)-Brivudine)

B
Product: BROMFENAC IMPURITIES

B
Bromfenac Lactam
91713-91-6
B
2-Amino-3-(4-bromobenzoyl)benzoic Acid
241496-82-2
B
7-(4-Bromobenzoyl)-1H-indole-2,3-dione
241825-88-7
B
2-Amino-3-(4-bromobenzoyl)phenyloxoacetic Acid
1391052-54-2
241825-87-6
B
2-Amino-3-benzoyl-α-oxo-benzeneacetic Acid
126849-31-8
B
7-Benzoylindoline-2,3-dione
70803-94-0
B
Product: BROMHEXINE IMPURITIES

B
Bromhexine EP Impurity A (Ambroxol EP Impurity A)
50739-76-9
B
Bromhexine EP Impurity B (Ambroxol EP Impurity E)
50910-55-9
B
Product: BRONOPOL IMPURITIES

B
Tris(hydroxymethyl)nitromethane
126-11-4
B
2-Methyl-2-nitro-1,3-propanediol
77-49-6
B
Product: BUDESONIDE  IMPURITIES

B
Budesonide EP Impurity-A
13951-70-7 
B
Budesonide EP Impurity-B (Budesonide Acetylaldehyde Acetal)
1040085-98-0
B
Budesonide EP Impurity-D (Budesonide Aldehyde Impurity)
85234-63-5
B
Budesonide EP Impurity-E/ Budesonide Related Compund E(14,15-Dehydro Budesonide)
131918-64-4
B
Budesonide EP Impurity-F (Desonide)
638-94-8
B
Budesonide EP Impurity-I (16α-Butyloxy Prednisolone)
113930-13-5
B
Budesonide EP Impurity-K (Budesonide 21-Acetate)
51333-05-2
B
Budesonide EP Impurity-L/ Budesonide Related Compund L(11-Keto Budesonide)
216453-74-6
B
Product: BUMETANIDE IMPURITIES

B
Bumetanide EP Impurity A/ Bumetanide Related Compound B
28328-53-2
B
Bumetanide EP Impurity B/ Bumetanide Related Compound A (Desbutyl Bumetanide)
28328-54-3
B
Bumetanide EP Impurity C (Bumetanide Butyl Ester)
32643-00-8
B
Bumetanide EP Impurity D
153012-65-8
B
Bumetanide Impurity 1
22892-96-2
B
Bumetanide Impurity
67155-14-0
B
Bumetanide Impurity
56106-57-1
B
N-Desbutyl-N-propyl Bumetanide
28395-28-0
B
Product: BUPIVACAINE IMPURITIES

B
Bupivacaine EP Impurity A (Mepivacaine EP Impurity C)
39627-98-0
B
Bupivacaine EP Impurity B/ Bupivacaine Related Compound B (Mepivacaine EP Impurity B/ N-Desbutyl Bupivacaine)
15883-20-2
65797-42-4
B
Bupivacaine EP Impurity E/ Bupivacaine Related Compound A
1330172-81-0
B
Bupivacaine EP Impurity F (Lidocaine EP Impurity A/ Lidocaine Related Compound A/ Ropivacaine EP Impurity H/ Ropivacaine Related Compound A/ Mepivacaine EP Impurity A)
87-62-7
21436-98-6
B
1-(2,6-Dimethylphenyl)azepan-2-one (Cyclised Impurity)

B
4-Hexylbenzene-1,3-diol
136-77-6
B
1-(2,4-Dihydroxyphenyl)hexan-1-one
3144-54-5
B
4-pentylbenzene-1,3-diol
533-24-4
B
1-(2,4-dihydroxyphenyl)pentan-1-one
15116-13-9
B
Product: BUPROPION IMPURITIES

B
Bupropion Related Compound A
1049718-72-0
B
Bupropion Related Compound B
1049718-43-5
B
Bupropion Related Compound C
152943-33-4
B
Bupropion Related Compound D (Deschloro Bupropion)
63199-74-6
34509-36-9
B
Bupropion Related Compound E
10557-17-2
B
Bupropion Related Compound F
857233-13-7
B
(3S,5R,6R)-Bupropion Impurity
2133460-43-0
B
Bupropion Des-t-tbutylamine Impurity (3’-Chloropropiophenone)
936-59-4
B
Bupropion 2-Bromo Impurity
34911-51-8
B
Bupropion Amino Impurity
119802-69-6
B
Bupropion 3,4-Dichloro Impurity
1193779-34-8
B
Bupropion Des-t-Butylamino Impurity
34841-35-5
B
Bupropion 2-Chloro Analog
1049718-57-1
B
Bupropion 3,5-Dichloro Impurity
1193779-48-4
B
Product: BUSPIRONE IMPURITIES

B
Buspirone EP Impurity A/ Buspirone Related Compound A
20980-22-7
B
Buspirone EP Impurity B
81461-73-6
B
Buspirone EP Impurity C/ Buspirone Bispyrimidinylpiperazinyl Butane Impurity
257877-45-5
B
Buspirone EP Impurity D/ Buspirone Bispyrimidinylpiperazinylbutyl Ether Impurity

B
Buspirone EP Impurity E/ Buspirone Open Ring Impurity
257877-46-6
B
Buspirone EP Impurity F/ Buspirone Open-Ring Dimer Impurity

B
Buspirone EP Impurity G/ Buspirone Related Compound G
84746-24-7
B
Buspirone EP Impurity H/ Buspirone Diester Dimer

B
Buspirone EP Impurity I/ 5-Chloro Buspirone

B
Buspirone EP Impurity J/ Buspirone Open Ring Spirodimer Impurity

B
Buspirone EP Impurity K/ Buspirone Related Compound K
1075-89-4
B
Buspirone EP Impurity L/ Buspirone Related Compund L
21098-11-3
B
Buspirone EP Impurity M/ Buspirone Bromobutyl Impurity
80827-62-9
B
Buspirone EP Impurity N/ Buspirone Related Compund N
257877-44-4
B
Buspirone N-Oxide
220747-81-9
B
Buspirone 5-Hydroxy Metabolite
105496-33-1
B
Buspirone 6-Hydroxy Metabolite
125481-61-0
B
Product: BUSULFAN IMPURITIES

B
Busulfan Methylsulfinyloxy Analog
106-48-9
B
Product: BUTANILICAINE IMPURITIES

B
2,2'-Dichloro-6'-methylacetanilide
6307-67-1

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