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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Deacetylnorgestimate ((E)- and (Z)-17-deacetyl norgestimate mixture) (DISCONTINUED)
CAS:53016-31-2
Estrogens and progestins
Formula:
C21H29NO2
Color and Shape:
White Powder
Molecular weight:
327.21983
Ref: 45-1471958
| 25mg | 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 |
Bemotrizinol Impurity Mixture
Diagnostic or lab reagents on a backing, prepared diagnostic or lab reagents whether or not …
Color and Shape:
Light Yellow Powder
Ref: 45-1048583
| Undefined size | Discontinued | Request information | |
| 100mg | Discontinued | Request information |
17α-Dihydroequilin (Estra-1,3,5(10),7-tetraene-3,17α-diol)
CAS:651-55-8
Estrogens and progestins
Formula:
C18H22O2
Color and Shape:
White Powder
Molecular weight:
270.16198
Ref: 45-1201002
| 25mg | Discontinued | Request information | |
| 50mg | 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 |
Estazolam Related Compound A (5-Chloro-2-(3-chloromethyl-4H-1,2,4-triazol-4-yl)-benzophenone)
CAS:37945-06-5
Heterocyclic compounds with nitrogen hetero-atom(s) only, aromatic or modified aromatic, nesoi
Formula:
C16H11Cl2N3O
Color and Shape:
Light Yellow Off-White White Crystalline Powder
Molecular weight:
331.02792
Ref: 45-1249916
| 10mg | Discontinued | Request information |
Drometrizole Trisiloxane Related Compound D (2-(2H-Benzotriazol-2-yl)-6-isobutyl-p-cresol) (DISCONTINUED)
Aromatic or modified aromatic drugs with nitrogen heter
Formula:
C17H19N3O
Color and Shape:
Pale Yellow Powder
Molecular weight:
281.35
Ref: 45-1228053
| 25mg | Discontinued | Request information |
Cinacalcet Related Compound B
Aromatic monoamines and their derivatives, salts thereof, nesoi
Formula:
C32H31F6N
Color and Shape:
Brown Liquid
Molecular weight:
543.6
Ref: 45-1133911
| Undefined size | 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 |
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 |
Bisacodyl Related Compound B (2,4'-(Pyridin-2-ylmethylene)diphenol)
CAS:16985-05-0
Compounds containing an unfused pyridine ring in the structure, nesoi
Formula:
C18H15NO2
Color and Shape:
White Light Yellow Powder
Molecular weight:
277.11028
Ref: 45-1074042
| 20mg | 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 |
Gadodiamide Related Compound A (Gadolinium sodium diethylenetriamine pentaacetic acid monomethylamide)
Compounds, inorganic or organic, of rare-earth metals, of yttrium or of scandium, or of mixtures …
Formula:
C15H22GdN4NaO9
Color and Shape:
White Off-White Pale Yellow Powder
Molecular weight:
583.05256
Ref: 45-1287518
| 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 |
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 |
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 |
Modafinil Related Compound B (2-[(diphenylmethyl)sulfonyl]acetamide) (DISCONTINUED)
CAS:118779-53-6
Other aromatic organo-sulfur compounds (excluding pesticides)
Formula:
C15H15NO3S
Color and Shape:
White Powder
Molecular weight:
289.07726
Ref: 45-1445357
| 20mg | Discontinued | Request information |
Cyclizine Related Compound A (1-Methylpiperazine)
CAS:109-01-3
Compounds containing a pyrimidine ring, whether or not hydrogenated, or piperazine ring in the structure, …
Formula:
C5H12N2
Color and Shape:
Colorless Clear Pale Yellow Liquid
Molecular weight:
100.10005
Ref: 45-1154015
| 50mg | Discontinued | Request information |
Iscotrizinol Related Compound C (2-Ethylhexyl 4-[(4-{[4-(tert-butylcarbamoyl)phenyl]amino}-6-chloro-1,3,5-triazin-2-yl)amino]benzoate) (DISCONTINUED)
Compounds (excluding melamine) containing an unfused triazine ring (whether or not hydrogenated) in the structure
Formula:
C29H37ClN6O3
Color and Shape:
White Off-White Powder
Molecular weight:
552.26157
Ref: 45-1193389
| 25mg | Discontinued | Request information |
Iscotrizinol Related Compound B (4-[(4-{[4-(tert-butylcarbamoyl)phenyl]amino}-6-[(4-{[(2-ethylhexyl)oxy]carbonyl}phenyl)amino]-1,3,5-triazin-2-yl)amino]benzoic acid) (DISCONTINUED)
Compounds (excluding melamine) containing an unfused triazine ring (whether or not hydrogenated) in the structure
Formula:
C36H43N7O5
Color and Shape:
White Powder
Molecular weight:
653.33257
Ref: 45-1193378
| 25mg | Discontinued | Request information |
