Impurity-2

CAS No:  2180123-01-5
Chemical Name:
(4R,5S)-3-(tert-butoxycarbonyl)-2-(4-methoxyphenyl)-4-phenyloxazolidine-5-carboxylic acid
Molecular Formula:
C22H25NO6

Ethylester side chain impurity

CAS No: NA
Chemical Name:
(2R,3S)-ethyl 3-(tert-butoxycarbonylamino)-2-hydroxy-3-phenylpropanoate
Molecular Formula:
C16H23NO5

N-Boc phenylisoserine

CAS No: NA
Chemical Name:
(2R,3S)-3-(tert-butoxycarbonylamino)-2-hydroxy-3-phenylpropanoic acid
Molecular Formula:
C14H19NO5

Phenylisoserine methylester

CAS No: 131968-74-6
Chemical Name:
(2R,3S)-methyl 3-amino-2-hydroxy-3-phenylpropanoate
Molecular Formula:
C10H13NO3

Phenylisoserine ethylester

CAS No:  143615-00-3
Chemical Name:
(2R,3S)-ethyl 3-amino-2-hydroxy-3-phenylpropanoate
Molecular Formula:
C11H15NO3

Impurity-1

CAS No: 153652-73-4
Chemical Name:
(4R,5S)-3-tert-butyl 5-methyl 2-(4-methoxyphenyl)-4-phenyloxazolidine-3,5-dicarboxylate
Molecular Formula:
C23H27NO6

Ep impurity C

CAS No: NA
Chemical Name:
4-(acetyloxy)-13α-[[(2R,3S)-3-[(tert-butoxy carbonyl)amino]-2-hydroxy-3-phenylpropanyl]oxy]1-7β,10β-trimethoxy-9-oxo-5β,20 epoxytax-11-en-2a-yl benzoate
Molecular Formula:
C46H59NO14

2-Tigloyl impurity/Ep impurity A

CAS No: NA
Chemical Name:
4-(acetyloxy)-13α-[[(2R,3S)-3-[(tert-butoxy carbonyl)amino]-2-hydroxy-3-phenylpropanyl]oxy]-1-hydroxy-7β,10β-dimethoxy-9-oxo-5β,20 epoxytax-11-en-2a-yl (2-E)-2-methylbut-2-enoate
Molecular Formula:
C43H59NO14

4-Propanoyloxy impurity/Ep impurity B

CAS No: NA
Chemical Name:
13-α-[[(2R,3S)-3-[(tert-butoxycarbonyl)amino]-2-hydroxy-3-phenylpropanoyl]oxy]-1-hydroxy-7β,10β-dimethoxy-9-oxo-4-(propanoyloxy)-5β,20-epoxytax-11-en-2a-yl benzoate
Molecular Formula:
C46H59NO14

EP impurity F

CAS No: NA
Chemical Name:
4α-Acetoxy-2α-benzoyloxy-5β,20-epoxy-1β-hydroxy-7β,10β-dimethoxy-9-oxo-11-taxene-13α-yl (4S,5S)-3-tert-butoxycarbonyl-2-(4-methoxyphenyl)-4-phenyl-1,3-oxazolidine-5-carboxylate
Molecular Formula:
C53H63NO15

methylester side chain impurity

CAS No: 124605-42-1
Chemical Name:
(2R,3S)-methyl 3-(tert-butoxycarbonylamino)-2-hydroxy-3-phenylpropanoate
Molecular Formula:
C15H21NO5

EP-impurityL/10-DAB

CAS No: 32981-86-5
Chemical Name:
4-(acetyloxy)1,7β,10β,13α-tetrahydroxy-9-oxo-5β,20-epoxytax-11-en-2α-yl benzoate
Molecular Formula:
C29H36O10

EP impurity N

CAS No: 1373171-120
Chemical Name:
5-[4-(acetyloxy)-2α-(benzoyloxy)-1-hydroxy-7β,10β-dimetoxy-9-oxo-5β,20-epoxytax-11-en-13α-yl}]3-tert-butyl(4R.5S)-2,2-dimetyl-4-phenyl-1-,3-oxazolidine-3-,5-dicarboxylate
Molecular Formula:
C48H61NO14

DiBOCimpurity/EP

CAS No: NA
Chemical Name:
4-(acetyloxy)-13α-[[(2R,3S)-3-[(tert-butoxy carbonyl)amino]-2-[(tert-butoxy carbonyl)oxy]-3-phenylpropanoyl]oxy]-1-hydroxy-7β,10β-dimethoxy-9-oxo-5β,20-epoxytax-11-en-2a-yl
Molecular Formula:
C50H65NO16

10,13-diprotectedimpurity/EP impurity G

CAS No: NA
Chemical Name:
4-(acetyloxy)-10β,13α-bis[[(2R,3S)-3-[(tert-butoxycarbonyl)amino]-2-hydroxy-3-phenylpropanoyl]oxy]-1-hydroxy-10β-methoxy-9-oxo-5β,20-epoxytax-11-en-2a-yl benzoate
Molecular Formula:
C57H70N2O17

Trimethyl 10-DAB

CAS No: 1584118-06-8
Chemical Name:
4-(acetyloxy)1-hydroxy-7β,10β,13α-trimethoxy-9-oxo-5β,20-epoxytax-11-en-2α-yl benzoate
Molecular Formula:
C32H42O10

7,13-diprotected Cabazitaxel / EP impurity E

CAS No: NA
Chemical Name:
4-(acetyloxy)-7β,13α-bis[[(2R,3S)-3-[(tert-butoxycarbonyl)amino]-2-hydroxy-3-phenylpropanoyl]oxy]-1-hydroxy-10β-methoxy-9-oxo-5β,20-epoxytax-11-en-2a-yl benzoate
Molecular Formula:
C58H72N2O18

EP impurity D (7,13-Epi diprotected Cabazitaxel)

CAS No: NA
Chemical Name:
4-(acetyloxy)-7α,13α-bis[[(2R,3S)-3-[(tert-butoxycarbonyl)amino]-2-hydroxy-3-phenylpropanoyl]oxy]-1-hydroxy-10β-methoxy-9-oxo-5β,20-epoxytax-11-en-2a-yl benzoate
Molecular Formula:
C58H72N2O18

Amine impurity/EP-K

CAS No: 1638286-64-2
Chemical Name:
 (2aR,4S,4aS,6R,9S,11S,12S,12aR,12bS)-12b-Acetoxy-9-(((2R,3S)-3-amino-2-hydroxy-3-phenylpropanoyl)oxy)-11-hydroxy-4,6-dimethoxy-4a,8,13,13-tetramethyl-5-oxo-2a,3,4,4a,5,6,9,10,11,12,12a,12b-dodecahydro-1H-7,11-methanocyclodeca[3,4]benzo[1,2-b]oxet-12-yl benzoate;
Molecular Formula:
C40H49NO12

N-Formylimpurity

CAS No: NA
Chemical Name:
(2aR,4S,4aS,6R,9S,11S,12S,12aR,12bS)-12b-Acetoxy-9-(((2R,3S)-3-Formamido-2-hydroxy-3-phenylpropanoyl)oxy)-11-hydroxy-4,6-dimethoxy-4a,8,13,13-tetramethyl-5-oxo-2a,3,4,4a,5,6,9,10,11,12,12a,12b-dodecahydro-1H-7,11-methanocyclodeca[3,4]benzo[1,2-b]oxet-12-yl Benzoate
Molecular Formula:
C41H49NO13

EP impurity H

CAS No: 183133-95-1
Chemical Name:
4α-Acetoxy-2α-benzoyloxy-5β,20-epoxy-1β-hydroxy-7β,10β-dimethoxy-9-oxo-11-taxene-13α-yl (4S,5R)-3-tert-butoxycarbonyl-2-(4-methoxyphenyl)-4-phenyl-1,3-oxazolidine-5-carboxylate
Molecular Formula:
C52H61NO14

EP impurity J

CAS No: 183133-94-0
Chemical Name:
4-(acetyloxy)1,13α-dihydroxy-7β,10β-dimethoxy-9-oxo-5β,20-epoxytax-11-en-2α-yl benzoate
Molecular Formula:
C31H40O10

Reference standared

CAS No: 183133-96-2/1430721-70-2 (hydrate)
Chemical Name:
(2aR,4S,4aS,6R,9S,11S,12S,12aR,12bS)-12b-Acetoxy-9-(((2R,3S)-3-((tert-butoxycarbonyl)amino)-2-hydroxy-3-phenylpropanoyl)oxy)-11-hydroxy-4,6-dimethoxy-4a,8,13,13-tetramethyl-5-oxo-2a,3,4,4a,5,6,9,10,11,12,12a,12b-dodecahydro-1H-7,11-methanocyclodeca[3,4]benzo[1,2-b]oxet-12-yl benzoate
Molecular Formula:
C45H57NO14