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Useful research chemical for a range of applications.
Perindopril Impurity
![Structure - (2S,3aS,6aS)-1-nitrosooctahydrocyclopenta[b]pyrrole-2-carboxylic acid](https://structures.clearsynth.com/CS-O-52956.PNG)
Useful research chemical for a range of applications.
Ramipril Impurity
Useful research chemical for a range of applications.
Perindopril Impurity
Useful research chemical for a range of applications.
Ramipril Intermediate
Useful research chemical for a range of applications.
(2s,3as,7as)-octahydro-1h-indole-2-carboxylic acid Hydrochloride Impurity
![Structure - (2S,3S)-[2-[3-(Acetoxy)-3,4-dihydro-2-(4-methoxyphenyl)-4-oxo-1,5-benzothiazepin-5(2H)-yl]ethyl]methyl-d3-carbamic Acid 1-Chloroethyl Ester](https://structures.clearsynth.com/CS-T-101950.png)
Useful research chemical for a range of applications.
(2S,3S)-[2-[3-(Acetoxy)-3,4-dihydro-2-(4-methoxyphenyl)-4-oxo-1,5-benzothiazepin-5(2H)-yl]ethyl]methyl-d3-carbamic Acid 1-Chloroethyl Ester Stable Isotopes
Useful research chemical for a range of applications.
(2S,3S)-2,3-Dihydroxy-3-methyl-4-(phenylmethoxy)butanoic-d3 Acid Methyl Ester Stable Isotope Reagent
Useful research chemical for a range of applications.
(2S,3S)-2-Amino-3-methyl-pentanoic acidmethyl ester hydrochloride Impurity
![Structure - (2S,3S)-2-Benzhydryl-1-aza-bicyclo[2.2.2]oct-3-yl-amine D-tartaric acid](https://structures.clearsynth.com/CS-O-41623.PNG)
Useful research chemical for a range of applications.
Maropitant Impurity
![Structure - (2S,3S)-3-[[[(1S)-1-[[(4-Azidobutyl)amino]carbonyl]-3-methylbutyl]amino]carbonyl]-2-oxiranecarboxylic Acid Ethyl Ester-d8](https://structures.clearsynth.com/CS-T-100979.png)
Useful research chemical for a range of applications.
(2S,3S)-3-[[[(1S)-1-[[(4-Azidobutyl)amino]carbonyl]-3-methylbutyl]amino]carbonyl]-2-oxiranecarboxylic Acid Ethyl Ester-d8 Stable Isotopes
Useful research chemical for a range of applications.
(2S,3S)-3-Hydroxy-2-methylbutanoic Acid-d3 Stable Isotopes
Useful research chemical for a range of applications.
(2S,3S)-Viridifloric Acid-d7 Stable Isotopes
Useful research chemical for a range of applications.
(2S,3S,4S,5R,6S)-3,4,5-Triacetoxy-6-((5-(2,5-dimethylphenoxy)-2,2-bis(methyl-d3)pentanoyl)oxy)tetrahydro-2H-pyran-2-carboxylic acid Stable Isotopes
![Structure - (2S,3S,5S)-5-[(N-Formyl-L-leucyl)oxy]-2-hexyl-3-hydroxyhexadecanoic Acid-d3(Mixture of Diastereomers)](https://structures.clearsynth.com/CS-T-97496.png)
Useful research chemical for a range of applications.
(2S,3S,5S)-5-[(N-Formyl-L-leucyl)oxy]-2-hexyl-3-hydroxyhexadecanoic Acid-d3(Mixture of Diastereomers) Impurity
Useful research chemical for a range of applications.
(2S,4E)-1-methyl-4-propylidenepyrrolidine-2-carboxylic acid Fine Chemicals
Useful research chemical for a range of applications.
(2S,4R)-1-(((9H-Fluoren-9-yl)methoxy)carbonyl)-4-((tert-butoxycarbonyl)amino)pyrrolidine-2-carboxylic acid Building Blocks
Useful research chemical for a range of applications.
(2S,4R)-1-(Diisopropoxyphosphoryl)-4-hydroxypyrrolidine-2-carboxylic acid Impurity
![Structure - (2S,4R)-1-{[(9H-fluoren-9-yl)methoxy]carbonyl}-4-methoxypyrrolidine-2-carboxylic acid](https://structures.clearsynth.com/CS-ZB-31152.png)
Useful research chemical for a range of applications.
(2S,4R)-1-{[(9H-fluoren-9-yl)methoxy]carbonyl}-4-methoxypyrrolidine-2-carboxylic acid Fine Chemicals
![Structure - (2S,4R)-2-[(Dimethylamino)carbonyl]-4-[(methylsulfonyl)oxy]-1-pyrrolidinecarboxylic Acid-d6 4-Nitrobenzyl Ester-d6](https://structures.clearsynth.com/CS-T-101487.png)
Useful research chemical for a range of applications.
(2S,4R)-2-[(Dimethylamino)carbonyl]-4-[(methylsulfonyl)oxy]-1-pyrrolidinecarboxylic Acid-d6 4-Nitrobenzyl Ester-d6 Stable Isotopes
![Structure - (2S,4R)-2-[(Dimethylamino)carbonyl]-4-hydroxy-1-pyrrolidinecarboxylic Acid-d6 4-Nitrobenzyl Ester](https://structures.clearsynth.com/CS-T-101488.png)
Useful research chemical for a range of applications.
(2S,4R)-2-[(Dimethylamino)carbonyl]-4-hydroxy-1-pyrrolidinecarboxylic Acid-d6 4-Nitrobenzyl Ester Stable Isotopes
Useful research chemical for a range of applications.
(2S,4R)-4-((tert-Butoxycarbonyl)amino)pyrrolidine-2-carboxylic acid Building Blocks
Useful research chemical for a range of applications.
(2S,4R)-4-Hydroxy-1,2-pyrrolidinedicarboxylic Acid 1-Benzyl Ester Chiral
![Structure - (2S,4S)-1-(9H-Fluoren-9-ylmethoxycarbonyl)-4-[[1-(2-hydroxy-4,4-dimethyl-6-oxocyclohexen-1-yl)-3-methylbutylidene]amino]pyrrolidine-2-carboxylic acid](https://structures.clearsynth.com/CS-ZH-05146_20250806_111853.PNG)
Useful research chemical for a range of applications.
(2S,4S)-1-(9H-Fluoren-9-ylmethoxycarbonyl)-4-[[1-(2-hydroxy-4,4-dimethyl-6-oxocyclohexen-1-yl)-3-methylbutylidene]amino]pyrrolidine-2-carboxylic acid Fine Chemicals
Useful research chemical for a range of applications.
Teneligliptin Impurity
Useful research chemical for a range of applications.
(2S,4S)-1-Fmoc-4-azidopyrrolidine-2-carboxylic acid Fine Chemicals
![Structure - (2S,4S)-4-(Acetylthio)-2-[(dimethylamino)carbonyl]-1-pyrrolidinecarboxylic Acid 4-Nitrobenzyl Ester-d6](https://structures.clearsynth.com/CS-T-101944.png)
Useful research chemical for a range of applications.
(2S,4S)-4-(Acetylthio)-2-[(dimethylamino)carbonyl]-1-pyrrolidinecarboxylic Acid 4-Nitrobenzyl Ester-d6 Stable Isotopes
Useful research chemical for a range of applications.
(2S,4S)-4-(Phenylthio)-1,2-pyrrolidinedicarboxylic-d5 Acid 1-(1,1-Dimethylethyl) Ester Stable Isotopes
Useful research chemical for a range of applications.
(2S,4S)-4-(Phenylthio)-1,2-pyrrolidinedicarboxylic-d5 Acid 1-tert-Butyl-2-Methyl Diester Stable Isotopes
Useful research chemical for a range of applications.
(2S,4S)-4-Methyl-pipecolinic acid hydrochloride Intermediate
![Structure - (2S,5R)-3,3-Dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic Acid 4-Oxide Phenylmethyl Ester-d5](https://structures.clearsynth.com/CS-T-97570.png)
Useful research chemical for a range of applications.
(2S,5R)-3,3-Dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic Acid 4-Oxide Phenylmethyl Ester-d5 Stable Isotopes
![Structure - (2S,5R)-6-(benzyloxy)-7-oxo-1,6-diazabicyclo[3.2.1]octane-2-carboxylic acid](https://structures.clearsynth.com/CS-EM-02758.PNG)
Useful research chemical for a range of applications.
Avibactam Impurity
Useful research chemical for a range of applications.
Emtricitabine Impurity
Useful research chemical for a range of applications.
Emtricitabine Impurity
![Structure - (2S,5S)-Fmoc-5-amino-1,2,4,5,6,7-hexahydro-azepino [3,2,1-hi] indole-4-one-2-carboxylic acid](https://structures.clearsynth.com/CS-AC-03965.png)
Useful research chemical for a range of applications.
(2S,5S)-Fmoc-5-amino-1,2,4,5,6,7-hexahydro-azepino [3,2,1-hi] indole-4-one-2-carboxylic acid Impurity
Useful research chemical for a range of applications.
(2Z)-2-Butenedioic Acid 1-Methyl Ester-d3 Stable Isotopes
![Structure - (2Z)-3-(CYCLOPROPYL AMINO)-2-[(2,4-DICHLORO-5-FLUOROPHENYL)CARBONYL]PROP-2-ENOIC ACID](https://structures.clearsynth.com/CS-O-47327.PNG)
Useful research chemical for a range of applications.
. Building Blocks
Useful research chemical for a range of applications.
(2Z)-3-Methyl-4-(benzyloxy)-2-butenoic-d3 Acid Methyl Ester Stable Isotopes
Useful research chemical for a range of applications.
(2Z)-4-(Dimethylamino)-2-butenoic acid Fine Chemicals
Useful research chemical for a range of applications.
(2Z)-Methyl 4-Bromo-2-(methoxyimino)-3-oxo-butanoic Acid Ester-d3 Stable Isotopes
![Structure - (2Z,4E)-5-[(1S)-3-(Hexylthio)-1-hydroxy-2,6,6-trimethyl-4-oxo-2-cyclohexen-1-yl]-3-methyl-2,4-pentadienoic Acid-d13](https://structures.clearsynth.com/CS-T-97462.png)
Useful research chemical for a range of applications.
(2Z,4E)-5-[(1S)-3-(Hexylthio)-1-hydroxy-2,6,6-trimethyl-4-oxo-2-cyclohexen-1-yl]-3-methyl-2,4-pentadienoic Acid-d13 Stable Isotopes
Useful research chemical for a range of applications.
(3-(tert-Butyl)-4-(pyrrolidin-1-yl)phenyl)boronic acid Building Blocks
Useful research chemical for a range of applications.
(3,5-Bis-trifluoromethylphenyl)carbamic acid phenyl ester Building Blocks
Useful research chemical for a range of applications.
. Stable Isotopes
Useful research chemical for a range of applications.
(3a,5β)-6-Ethylidene-3-Hydroxy-7-Oxocholan-24-Oic Acid Impurity
Useful research chemical for a range of applications.
Ursodeoxycholic Impurity
![Structure - (3aS,4S,6aS)-2,2-dimethyl-6-oxotetrahydro-3aH-[1,3]dioxolo[4,5-c]pyrrole-4-carboxylic acid](https://structures.clearsynth.com/CS-O-46880.PNG)
Useful research chemical for a range of applications.
(3aS,4S,6aS)-2,2-dimethyl-6-oxotetrahydro-3aH-[1,3]dioxolo[4,5-c]pyrrole-4-carboxylic acid Building Blocks
Useful research chemical for a range of applications.
Progesterone Stable Isotopes
Useful research chemical for a range of applications.
nintedanib Impurity
Useful research chemical for a range of applications.
(3-Fluoro-phenyl)-propynoic Acid Methyl Ester Fine Chemicals
Useful research chemical for a range of applications.
(3-hydroxypropyl)phosphonic acid diethyl ester Impurity
![Structure - (3R)-3-[[(1,1-Dimethylethyl)dimethylsilyl]oxy]-1-pyrrolidinecarboxylic Acid 1,1-Dimethylethyl Ester-d4](https://structures.clearsynth.com/CS-T-100385.png)
Useful research chemical for a range of applications.
(3R)-3-[[(1,1-Dimethylethyl)dimethylsilyl]oxy]-1-pyrrolidinecarboxylic Acid 1,1-Dimethylethyl Ester-d4 Stable Isotopes
Useful research chemical for a range of applications.
(3R)-3-Hydroxy-1-pyrrolidinecarboxylic Acid Phenylmethyl Ester-d4 Stable Isotopes
Useful research chemical for a range of applications.
(3R)-3-(4-((5-(2,3-dimethoxyphenyl)-2,3-dihydro-1H-inden-1-yl)oxy)phenyl)hex-4-ynoic acid Impurity
Useful research chemical for a range of applications.
(3R)-3-(4-((5-(2-ethoxyphenyl)-2,3-dihydro-1H-inden-1-yl)oxy)phenyl)hex-4-ynoic acid Impurity
Useful research chemical for a range of applications.
(3R)-3-(4-((5-(3-ethoxyphenyl)-2,3-dihydro-1H-inden-1-yl)oxy)phenyl)hex-4-ynoic acid Impurity
Useful research chemical for a range of applications.
(3R)-3-(4-((5-(3-methoxyphenyl)-2,3-dihydro-1H-inden-1-yl)oxy)phenyl)hex-4-ynoic acid Impurity
Useful research chemical for a range of applications.
(3R)-3-(4-((5-mesityl-2,3-dihydro-1H-inden-1-yl)oxy)phenyl)hex-4-ynoic acid Impurity
Useful research chemical for a range of applications.
Brivaracetam Impurity
Useful research chemical for a range of applications.
(3R)-3,6-Dihydro-2H-1,4-thiazine-3,5-dicarboxylic Acid 3-Ethyl Ester-d5 Stable Isotopes
Useful research chemical for a range of applications.
(3R)-3-Hydroxybutyric Acid-1-13C Stable Isotopes
Useful research chemical for a range of applications.
Atorvastatin Chiral
![Structure - (3R,3aR,6aS)-Hexahydrofuro[2,3-b]furan-3-yl 4-Nitrophenyl Ester Carbonic Acid](https://structures.clearsynth.com/CS-T-55616.png)
Useful research chemical for a range of applications.
Darunavir Impurity
![Structure - (3R,4R,5R)-3,4-Dihydroxy-5-[(methylsulfonyl)oxy]-1-cyclohexene-1-carboxylic Acid Ethyl Ester](https://structures.clearsynth.com/CS-T-53254.png)
Useful research chemical for a range of applications.
Oseltamivir Impurity
![Structure - (3R,4R,5R)-4-(1-Ethylpropoxy)-3-hydroxy-5-[(methylsulfonyl)oxy]-1-cyclohexene-1-carboxylic Acid Ethy](https://structures.clearsynth.com/CS-T-54583.png)
Useful research chemical for a range of applications.
(3R,4R,5R)-4-(1-Ethylpropoxy)-3-hydroxy-5-[(methylsulfonyl)oxy]-1-cyclohexene-1-carboxylic Acid Ethy Building Blocks
Useful research chemical for a range of applications.
Oseltamivir Impurity
Useful research chemical for a range of applications.
(3R,4R,5S)-4-(Acetylamino)-5-amino-3-(1-methylethoxy)-1-Cyclohexene-1-carboxylic Acid Ethyl Ester Impurity
![Structure - (3R,4S)-1-(4-Fluorophenyl)-2-oxo-4-[4-(benzyloxy)phenyl]-3-azetidinepropanoic acid](https://structures.clearsynth.com/CS-O-10625_20250705_102041.PNG)
Useful research chemical for a range of applications.
Ezetimibe Intermediate
Useful research chemical for a range of applications.
(3R,4S)-4-Ethyl-3-pyrrolidinecarboxylic acid Impurity
Useful research chemical for a range of applications.
(3R,4S,5S,6R)-2-(5-carboxypentyloxy)-3,5-diacetoxy-6-(acetoxymethyl)-tetrahydro-2H-pyran-4-yl sulfonic acid Carbohydrates
Useful research chemical for a range of applications.
Atorvastatin Intermediate
![Structure - (3R,5S)-5-((R)-8-Fluoro-4-isopropyl-2-(N-methylmethylsulfonamido)-5,6-dihydrobenzo[h]quinazolin-6-yl)-3,5-dihydroxypentanoic acid](https://structures.clearsynth.com/CS-O-43670.png)
Useful research chemical for a range of applications.
(3R,5S)-5-((R)-8-Fluoro-4-isopropyl-2-(N-methylmethylsulfonamido)-5,6-dihydrobenzo[h]quinazolin-6-yl)-3,5-dihydroxypentanoic acid Impurity
Useful research chemical for a range of applications.
Rosuvastatin
Useful research chemical for a range of applications.
(3R-cis)-(4-Methyl-3-pyrrolidinyl)-carbamic Acid 1,1-Dimethylethyl Ester-D3 Stable Isotopes
![Structure - (3S)-10-(4-Ethyl-1-piperazinyl)-9-fluoro-2,3-dihydro-3-methyl-7-oxo-7H-pyrido[1,2,3-de]-1,4-benzoxazine-6-carboxylic Acid-d5(Levofloxacin Impurity)](https://structures.clearsynth.com/CS-T-97514.png)
Useful research chemical for a range of applications.
(3S)-10-(4-Ethyl-1-piperazinyl)-9-fluoro-2,3-dihydro-3-methyl-7-oxo-7H-pyrido[1,2,3-de]-1,4-benzoxazine-6-carboxylic Acid-d5(Levofloxacin Impurity) Impurity
![Structure - (3S)-10-Fluoro-2,3-dihydro-3-methyl-7-oxo-7H-pyrido[1,2,3-de]-1,4-benzoxazine-6-carboxylic Acid](https://structures.clearsynth.com/CS-T-54826.png)
Useful research chemical for a range of applications.
(3S)-10-Fluoro-2,3-dihydro-3-methyl-7-oxo-7H-pyrido[1,2,3-de]-1,4-benzoxazine-6-carboxylic Acid Impurity
Useful research chemical for a range of applications.
Pregabalin Impurity
Useful research chemical for a range of applications.
(3S)-3-(4-((5-(2-fluoro-3-methoxyphenyl)-2,3-dihydro-1H-inden-1-yl)oxy)phenyl)hex-4-ynoic acid Impurity
Useful research chemical for a range of applications.
(3S)-3-(4-((5-(2-fluoro-5-methoxyphenyl)-2,3-dihydro-1H-inden-1-yl)oxy)phenyl)hex-4-ynoic acid Impurity
![Structure - (3S)-3-[[(1,1-Dimethylethyl)dimethylsilyl]oxy]-5-oxo-6-(triphenylphosphoranylidene)-hexanoic acid, methyl ester](https://structures.clearsynth.com/CS-O-40532.png)
Useful research chemical for a range of applications.
(3S)-3-[[(1,1-Dimethylethyl)dimethylsilyl]oxy]-5-oxo-6-(triphenylphosphoranylidene)-hexanoic acid, methyl ester Fine Chemicals
Useful research chemical for a range of applications.
(3S)-3-amino-4-(2,4,5-trifluorophenyl)butanoic acid Impurity
![Structure - (3S,3aR,6aS)-Hexahydrofuro[2,3-b]furan-3-yl 4-Nitrophenyl Ester Carbonic Acid](https://structures.clearsynth.com/CS-T-55614.png)
Useful research chemical for a range of applications.
Darunavir Impurity
![Structure - (3S,3aS,6aR)-Hexahydrofuro[2,3-b]furan-3-yl 4-Nitrophenyl Ester Carbonic Acid](https://structures.clearsynth.com/CS-T-55620.png)
Useful research chemical for a range of applications.
Darunavir Impurity
Useful research chemical for a range of applications.
(3S,4R)-1-((benzyloxy)carbonyl)-4-ethylpyrrolidine-3-carboxylic acid Fine Chemicals
Useful research chemical for a range of applications.
Oseltamivir Impurity
Useful research chemical for a range of applications.
(3S,4S)-1-((benzyloxy)carbonyl)-4-ethylpyrrolidine-3-carboxylic acid Fine Chemicals
![Structure - (3S,5R,6E)-7-[2-Cyclopropyl-4-(4-fluorophenyl)-3-quinolinyl]-3,5-dihydroxy-6-heptenoic acid](https://structures.clearsynth.com/CS-N-05223.png)
Useful research chemical for a range of applications.
(3S,5R,6E)-7-[2-Cyclopropyl-4-(4-fluorophenyl)-3-quinolinyl]-3,5-dihydroxy-6-heptenoic acid
Useful research chemical for a range of applications.
(3S,5S)-1-Boc-5-(methoxymethyl)pyrrolidine-3-carboxylic Acid-d3 Stable Isotopes
![Structure - (3S,7aR)-2,3,7,7a-Tetrahydro-2,2-dimethyl-5-(phenylmethyl)-imidazo[5,1-b]thiazole-3,7-dicarboxylic Acid-d5](https://structures.clearsynth.com/CS-T-99803.png)
Useful research chemical for a range of applications.
(3S,7aR)-2,3,7,7a-Tetrahydro-2,2-dimethyl-5-(phenylmethyl)-imidazo[5,1-b]thiazole-3,7-dicarboxylic Acid-d5 Stable Isotopes
![Structure - (3Z)-2,3-Dihydro-3-[[[4-[methyl[2-(4-methyl-1-piperazinyl)acetyl]amino]phenyl]amino]phenylmethylene]-2-oxo-1H-indole-6-carboxylic Acid-D3](https://structures.clearsynth.com/CS-T-100438.png)
Useful research chemical for a range of applications.
(3Z)-2,3-Dihydro-3-[[[4-[methyl[2-(4-methyl-1-piperazinyl)acetyl]amino]phenyl]amino]phenylmethylene]-2-oxo-1H-indole-6-carboxylic Acid-D3 Stable Isotopes
Useful research chemical for a range of applications.
(3α,5β)-6-Ethyl-3-hydroxy-7-oxocholan-24-oic Acid Impurity
Useful research chemical for a range of applications.
(3α,5β)-9(11)-en-12-Deoxy-3-hydroxy-Chol-9(11)-en-24-oic acid Impurity
Useful research chemical for a range of applications.
(3α,5β,7α)-7-Hydroxy-3-(sulfooxy)-cholan-24-oic Acid-d5 Disodium Salt Stable Isotopes
Useful research chemical for a range of applications.
(3β)-3-(Sulfooxy)olean-12-en-28-oic Acid-d3 Stable Isotopes
Useful research chemical for a range of applications.
(3β,7α)-7-Hydroxy-3-(sulfooxy)chol-5-en-24-oic-d5 Acid Disodium Salt Stable Isotopes
Useful research chemical for a range of applications.
(3β,7α,12α)-7,12-Dihydroxy-3-(sulfooxy)chol-5-en-24-oic-d5 Acid Disodium Salt Stable Isotopes
Useful research chemical for a range of applications.
Spermine Stable Isotopes
Useful research chemical for a range of applications.
. Fine Chemicals
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