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.
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Calcitonin Salmon Related Compound B (calcitonin salmon-glycine) (COLD SHIPMENT REQUIRED) (DISCONTINUED)
CAS:115472-96-3
Polypeptide, protein and glycoprotein hormones, their derivatives and structural analogues, nesoi
Formula:
C147H242N44O50S2
Color and Shape:
Colorless Liquid
Molecular weight:
3487.71879
Ref: 45-1086221
| 0.34mg | Discontinued | Request information |
Nisoldipine Related Compound G (Diisobutyl 2,6-dimethyl-4-(2-nitrophenyl)-1,4-dihydropyridine-3,5-dicarboxylate) (DISCONTINUED)
CAS:2226462-71-9
Compounds containing an unfused pyridine ring in the structure, nesoi
Formula:
C23H30N2O6
Color and Shape:
Yellow Powder
Molecular weight:
430.21039
Ref: 45-1464183
| 30mg | Discontinued | Request information |
Ticagrelor R,R,S,R-Isomer
CAS:2096989-55-6
Compounds containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring in the structure, …
Formula:
C23H28F2N6O4S
Molecular weight:
522.18608
Ref: 45-1666980
| Undefined size | Discontinued | Request information |
Amiodarone Related Compound B
CAS:83409-32-9
Polypeptide, protein and glycoprotein hormones, their derivatives and structural analogues, nesoi
Formula:
C23H25I2NO3
Molecular weight:
616.99239
Ref: 45-1027324
| Undefined size | 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 |
Eprosartan Related Compound C (2-(thiophen-2-ylmethyl)malonic acid) (DISCONTINUED)
CAS:4475-24-5
Nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds, nesoi
Formula:
C8H8O4S
Color and Shape:
White Powder
Molecular weight:
200.01433
Ref: 45-1238240
| 25mg | Discontinued | Request information |
Loracarbef L-Isomer (DISCONTINUED)
Aromatic or modified aromatic heterocyclic compounds withnitrogen hetero-atom(s) only nesoi
Formula:
C16H16ClN3O4· 3H2O
Color and Shape:
Powder
Molecular weight:
403.82
Ref: 45-1370225
| 25mg | Discontinued | Request information |
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 |
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 |
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 |
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 |
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 |
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 |
Bemotrizinol Impurity Mixture (DISCONTINUED)
Diagnostic or lab reagents on a backing, prepared diagnostic or lab reagents whether or not …
Color and Shape:
Light Yellow Powder
Ref: 45-1048583
| 100mg | 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 |
Sulfamethazine Related Compound A (4-Amino-N-carbamimidoylbenzenesulfonamide-, monohydrate) (DISCONTINUED)
CAS:6190-55-2
Sulfonamides, nesoi
Formula:
C7H10N4O2S·H2O
Color and Shape:
White Powder
Molecular weight:
232.06301
Ref: 45-1629019
| 100mg | 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 |
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 |
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 |
