Active pharmaceutical ingredient (API) impurities for research
All products contained in this category are intended for laboratory use only, and are not meant for human consumption.
Read more
Sulfamethazine Related Compound B (Mixture containing about 49% of 4-Amino-2-chloro-N-(4,6-dimethylpyrimidin-2-yl)benzenesulfonamide and about 48% of 4-Amino-3-chloro-N-(4,6-dimethylpyrimidin-2-yl)benzenesulfonamide) (DISCONTINUED)
Sulfonamides, nesoi
Color and Shape:
White Off-White Solid
Ref: 45-1629021
| 50mg | Discontinued | Request information |
Levalbuterol Related Compound B (α-[{(1,1-Dimethylethyl)amino}methyl]-4-hydroxy-3-methyl-benzenemethanol) (DISCONTINUED)
CAS:18910-68-4
Aromatic amino-alcohol-phenols, aromatic amino-acid-phenols and other aromatic amino compounds with oxygen function
Formula:
C13H21N02
Color and Shape:
White Powder
Molecular weight:
205.17047
Ref: 45-1358809
| 20mg | Discontinued | Request information |
Iscotrizinol Related Compound I (Bis(2-ethylhexyl) 4,4'-{[6-({4-[(4-{[(2-ethylhexyl)oxy]carbonyl}phenyl)carbamoyl]phenyl}amino)-1,3,5-triazine-2,4-diyl]bis(azanediyl)}dibenzoate) (DISCONTINUED)
Compounds (excluding melamine) containing an unfused triazine ring (whether or not hydrogenated) in the structure
Formula:
C55H71N7O7
Color and Shape:
White Powder
Molecular weight:
941.5415
Ref: 45-1193447
| 25mg | Discontinued | Request information |
Iscotrizinol Related Compound F (Bis(2-ethylhexyl) 4,4'-({6-[(4-carbamoylphenyl)amino]-1,3,5-triazine-2,4-diyl}bis(azanediyl))dibenzoate) (DISCONTINUED)
Compounds (excluding melamine) containing an unfused triazine ring (whether or not hydrogenated) in the structure
Formula:
C40H51N7O5
Color and Shape:
White Off-White Powder
Molecular weight:
709.39517
Ref: 45-1193414
| 25mg | Discontinued | Request information |
Rabeprazole Related Compound A (Disodium 1-benzimidazol-2-yl-3-methyl-4-oxo-1,4-dihydropyridine-2-carboxylate)
Compounds containing an unfused pyridine ring in the structure, nesoi
Formula:
C14H9N3Na2O3
Color and Shape:
Off-White Yellow Powder
Molecular weight:
313.04393
Ref: 45-1598020
| 25mg | Discontinued | Request information |
Probucol Related Compound C (4-[(3,5-di-tert-butyl-2-hydroxyphenylthio)isopropylidenethio]-2,6-di-tert-butylphenol) (DISCONTINUED)
CAS:1391054-68-4
Other aromatic organo-sulfur compounds (excluding pesti
Formula:
C31H48O2S2
Color and Shape:
Powder
Molecular weight:
516.86
Ref: 45-1563342
| 25mg | Discontinued | Request information |
Probucol Related Compound B (4,4'-dithio-bis(2,6-di-tert-butylphenol)) (DISCONTINUED)
Other aromatic organo-sulfur compounds (excluding pesti
Formula:
C28H42O2S2
Color and Shape:
Pale Yellow Crystalline Solid
Molecular weight:
474.77
Ref: 45-1563331
| 25mg | Discontinued | Request information |
Carglumic Acid Related Compound C
Acyclic amides (including acyclic carbamates) and their derivatives and salts thereof, nesoi
Formula:
C11H17N3O8
Color and Shape:
Off-White Powder
Molecular weight:
319.10156
Ref: 45-1096542
| Undefined size | Discontinued | Request information |
Orlistat Related Compound D (N-formyl-L-leucine (3S,4R,6S)-3-hexyl-2-oxo-6-undecyltetrahydro-2H-pyran-4-yl ester) (DISCONTINUED)
CAS:130793-27-0
Lactones, nesoi
Formula:
C29H53NO5
Color and Shape:
Liquid
Molecular weight:
495.39237
Ref: 45-1478844
| 10mg | Discontinued | Request information |
Zalcitabine Related Compound A (2',3'-Didehydro-2',3'-dideoxycytidine) (DISCONTINUED)
CAS:7481-88-1
Nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds, nesoi
Formula:
C9H11N3O3
Color and Shape:
Powder
Molecular weight:
209.08004
Ref: 45-1724317
| 50mg | Discontinued | Request information |
Iscotrizinol Related Compound G (2-Ethylhexyl 4-{4-[(4-{[4-(tert-butylcarbamoyl)phenyl]amino}-6-[(4-{[(2-ethylhexyl)oxy]carbonyl}phenyl)amino]-1,3,5-triazin-2-yl)amino]benzamido}benzoate) (DISCONTINUED)
Compounds (excluding melamine) containing an unfused triazine ring (whether or not hydrogenated) in the structure
Formula:
C51H64N8O6
Color and Shape:
Powder
Molecular weight:
884.49488
Ref: 45-1193425
| 25mg | Discontinued | Request information |
Ethylhexyl Triazone Related Compound C (Bis(2-ethylhexyl) 4,4'-[(6-{[4-(ethoxycarbonyl)phenyl]amino}-1,3,5-triazine-2,4-diyl)bis(azanediyl)]dibenzoate) (DISCONTINUED)
Compounds (excluding melamine) containing an unfused triazine ring (whether or not hydrogenated) in the structure
Formula:
C42H54N6O6
Color and Shape:
Powder
Molecular weight:
738.91
Ref: 45-1265560
| 20mg | Discontinued | Request information |
Cidofovir Related Compound B (1-[(S)-3-Hydroxy-2-(O,O-diethylphosphonomethoxy)propyl]cytosine hydrochloride)
Compounds containing a pyrimidine ring, whether or not hydrogenated, or piperazine ring in the structure, …
Formula:
C12H22N3O6P·HCl
Color and Shape:
Green Light Green Powder
Molecular weight:
371.1013
Ref: 45-1133886
| 15mg | Discontinued | Request information |
Nefazodone Related Compound A (1-(3-chlorophenyl)-4-(3-chloropropyl)-piperazine hydrochloride)
CAS:57059-62-8
Compounds containing a pyrimidine ring (whether or not
Formula:
C13H18Cl2N2·HCl
Color and Shape:
White Powder
Molecular weight:
272.0847
Ref: 45-1457913
| 25mg | Discontinued | Request information |
Drometrizole Trisiloxane Related Compound A (2-(2H-Benzotriazol-2-yl)-6-(isobuten-1-yl)-p-cresol) (DISCONTINUED)
CAS:2170-37-8
Aromatic or modified aromatic drugs with nitrogen heter
Formula:
C17H17N3O
Color and Shape:
Yellow Powder
Molecular weight:
279.13716
Ref: 45-1228029
| 25mg | Discontinued | Request information |
Eprosartan Related Compound E (4-(hydroxymethyl)benzoic acid) (DISCONTINUED)
CAS:3006-96-0
Carboxylic acids with additional oxygen function and their anhydrides, halides, peroxides etc not elsewhere specified …
Formula:
C8H8O3
Color and Shape:
Beige White Powder
Molecular weight:
152.04734
Ref: 45-1238262
| 15mg | Discontinued | Request information |
Eprosartan Related Compound B (3-(thiophen-2-yl)propanoic acid) (DISCONTINUED)
CAS:5928-51-8
Nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds, nesoi
Formula:
C7H8O2S
Color and Shape:
White Beige Solid
Molecular weight:
156.0245
Ref: 45-1238239
| 15mg | Discontinued | Request information |
Eprosartan Related Compound D (4-(bromomethyl)benzoic acid) (DISCONTINUED)
CAS:6232-88-8
Aromatic monocarboxylic acids, their anhydrides, halides, peroxides, peroxyacid and their derivatives not elsewhere specified or …
Formula:
C8H7BrO2
Color and Shape:
White Powder
Molecular weight:
213.96294
Ref: 45-1238251
| 15mg | Discontinued | Request information |
Pamabrom Related Compound A (8-Chlorotheophylline) (DISCONTINUED)
CAS:85-18-7
Theophylline and aminophylline (excluding fenetylline) and their derivatives, salts thereof, not elsewhere specified or included
Formula:
C7H7ClN4O2
Color and Shape:
Powder
Molecular weight:
214.02575
Ref: 45-1492700
| 30mg | Discontinued | Request information |
Epoprostenol Related Compound B (Sodium 5-(diphenylphosphinoyl)pentanoate) (DISCONTINUED)
Prostaglandins, thromboxanes and leukotrienes, their derivatives and structural analogues
Formula:
C17H18NaO3P
Color and Shape:
White Powder
Molecular weight:
324.08913
Ref: 45-1237622
| 15mg | Discontinued | Request information |
