API
IMPURITY
CHEMICAL NAME
STRUCTURE
2
Piroxicam

EP Impurity A

pyridin-2-amine Piroxicam-EP-Impurity-A
Piroxicam

EP Impurity B

4-hydroxy-N-(pyridin-2-yl)-2H-1,2-benzothiazine-3-carboxamide 1,1-dioxide PiroxicamEP-Impurity-B
Piroxicam

EP Impurity C

4-hydroxy-2-methyl-2H-1,2-benzothiazine-3-carboxamide 1,1-dioxide PiroxicamEP-Impurity-C
Piroxicam

EP Impurity D

methyl (1,1-dioxido-3-oxo-1,2-benzisothiazol-2(3H)-yl)acetate PiroxicamEP-Impurity-D
Piroxicam

EP Impurity E

ethyl (1,1-dioxido-3-oxo-1,2-benzisothiazol-2(3H)-yl)acetate PiroxicamEP-Impurity-E
Piroxicam

EP Impurity F

1-methylethyl (1,1-dioxido-3-oxo-1,2-benzisothiazol-2(3H)-yl)acetate PiroxicamEP-Impurity-F
Piroxicam

EP Impurity H

ethyl 4-hydroxy-2H-1,2-benzothiazine-3-carboxylate 1,1-dioxide PiroxicamEP-Impurity-H
Piroxicam

EP Impurity G

methyl 4-hydroxy-2H-1,2-benzothiazine-3-carboxylate 1,1-dioxide PiroxicamEP-Impurity-G
Piroxicam

EPImpurity I

1-methylethyl 4-hydroxy-2H-1,2-benzothiazine-3-carboxylate 1,1- dioxide PiroxicamEPImpurity-I
Piroxicam

EPImpurity J

methyl 4-hydroxy-2-methyl-2H-1,2-benzothiazine-3-carboxylate 1,1- dioxide PiroxicamEPImpurity-J
Piroxicam

EPImpurity K

ethyl 4-hydroxy-2-methyl-2H-1,2-benzothiazine-3-carboxylate 1,1- dioxide PiroxicamEPImpurity-K
Piroxicam

EPImpurity L

1-methylethyl 4-hydroxy-2-methyl-2H-1,2-benzothiazine-3- carboxylate 1,1-dioxide PiroxicamEPImpurity-L