mupirocin and its Impurities
Mupirocin is used as a topical treatment for bacterial skin infections. It is used as a cream or ointment applied to the skin. It is sold under the brand name Bactroban. Reference standards of Mupirocin API,and its pharmacopeial, non pharmacopeial impurities, and stable isotopes are listed below.


Mupirocin - Impurity D
9-[[(2E)-4-[(2R,3aS,6S,7S)-2-[(2S,3S)-1,3-Dihydroxy-2-methylbutyl]-7-hydroxyhexahydro-4H-furo[3,2-c]pyran-6-yl]-3-methylbut-2-enoyl]oxy]nonanoic Acid Sodium Salt
Catalogue No.:PA 13 61040
CAS :
116182-43-5
Molecular Formula : C26H43NaO9
Molecular Weight : 522.60


Mupirocin - Impurity E
9-[[(2E)-4-[(2R,3RS,4aS,7S,8S,8aR)-3,8-Dihydroxy-2-[(1S,2S)-2-hydroxy-1-methylpropyl]hexahydro-2H,5H-pyrano[4,3-b]pyran-7-yl]-3-methylbut-2-enoyl]oxy]nonanoic Acid Sodium Salt
Catalogue No.:PA 13 61050
CAS :
116182-44-6
Molecular Formula : C26H43NaO9
Molecular Weight : 522.60


Mupirocin - Impurity E (Freebase)
9-[[(2E)-4-[(2R,3RS,4aS,7S,8S,8aR)-3,8-Dihydroxy-2-[(1S,2S)-2-hydroxy-1-methylpropyl]hexahydro-2H,5H-pyrano[4,3-b]pyran-7-yl]-3-methylbut-2-enoyl]oxy]nonanoic Acid
Catalogue No.:PA 13 61051
CAS :
71087-96-2
Molecular Formula : C26H44O9
Molecular Weight : 500.62


Mupirocin - Impurity F
7-[[(2E)-4-[(2S,3R,4R,5S)-3,4-Dihydroxy-5-[[(2S,3S)-3-[(1S,2S)-2-hydroxy-1-methylpropyl]oxiranyl]methyl]tetrahydro-2H-pyran-2-yl]-3-methylbut-2-enoyl]oxy]heptanoic Acid
Catalogue No.:PA 13 61060
CAS :
167842-64-0
Molecular Formula : C24H40O9
Molecular Weight : 472.57


11-(((E)-4-((2S,3R,4R,5S)-3,4-Dihydroxy-5-(((2S,3S)-3-((2S,3S)-3-hydroxybutan-2-yl)oxiran-2-yl)methyl)tetrahydro-2H-pyran-2-yl)-3-methylbut-2-enoyl)oxy)undecanoic Acid
11-(((E)-4-((2S,3R,4R,5S)-3,4-Dihydroxy-5-(((2S,3S)-3-((2S,3S)-3-hydroxybutan-2-yl)oxiran-2-yl)methyl)tetrahydro-2H-pyran-2-yl)-3-methylbut-2-enoyl)oxy)undecanoic Acid
Catalogue No.:PA 13 61510
CAS :
167842-57-1
Molecular Formula : C28H48O9
Molecular Weight : 528.68


(E)-Decyl 4-((2S,3R,4R,5S)-3,4-dihydroxy-5-(((2S,3S)-3-((2S,3S)-3-hydroxybutan-2-yl)oxiran-2-yl)methyl)tetrahydro-2H-pyran-2-yl)-3-methylbut-2-enoate
(E)-Decyl 4-((2S,3R,4R,5S)-3,4-dihydroxy-5-(((2S,3S)-3-((2S,3S)-3-hydroxybutan-2-yl)oxiran-2-yl)methyl)tetrahydro-2H-pyran-2-yl)-3-methylbut-2-enoate
Catalogue No.:PA 13 61520
CAS :
153900-96-0
Molecular Formula : C27H48O7
Molecular Weight : 484.67


9-(((E)-4-((2S,3R,4R,5S)-5-(((2S,3S)-3-((2S,3S)-3-((9-(((E)-4-((2S,3R,4R,5S)-3,4-Dihydroxy-5-(((2S,3S)-3-((2S,3S)-3-hydroxybutan-2-yl)oxiran-2-yl)methyl)tetrahydro-2H-pyran-2-yl)-3-methylbut-2-enoyl)oxy)nonanoyl)oxy)butan-2-yl)oxiran-2-yl)methyl)-3,4-dihydroxytetrahydro-2H-pyran-2-yl)-3-methylbut-2-enoyl)oxy)nonanoic Acid
9-(((E)-4-((2S,3R,4R,5S)-5-(((2S,3S)-3-((2S,3S)-3-((9-(((E)-4-((2S,3R,4R,5S)-3,4-Dihydroxy-5-(((2S,3S)-3-((2S,3S)-3-hydroxybutan-2-yl)oxiran-2-yl)methyl)tetrahydro-2H-pyran-2-yl)-3-methylbut-2-enoyl)oxy)nonanoyl)oxy)butan-2-yl)oxiran-2-yl)methyl)-3,4-dihydroxytetrahydro-2H-pyran-2-yl)-3-methylbut-2-enoyl)oxy)nonanoic Acid
Catalogue No.:PA 13 61530
CAS :
NA
Molecular Formula : C52H86O17
Molecular Weight : 983.23


Sodium 9-(((E)-4-((2S,3aS,6S,7S,7aR)-2-((2S,3S)-1,3-dihydroxy-2-methylbutyl)-7-hydroxyhexahydro-4H-furo[3,2-c]pyran-6-yl)-3-methylbut-2-enoyl)oxy)nonanoate
Sodium 9-(((E)-4-((2S,3aS,6S,7S,7aR)-2-((2S,3S)-1,3-dihydroxy-2-methylbutyl)-7-hydroxyhexahydro-4H-furo[3,2-c]pyran-6-yl)-3-methylbut-2-enoyl)oxy)nonanoate
Catalogue No.:PA 13 61560
CAS :
NA
Molecular Formula : C26H43NaO9
Molecular Weight : 522.61


11-(((E)-4-((2S,3R,4R,5S)-5-(((2S,3S)-3-((2S,3S)-3-((9-(((E)-4-((2S,3R,4R,5S)-3,4-Dihydroxy-5-(((2S,3S)-3-((2S,3S)-3-hydroxybutan-2-yl)oxiran-2-yl)methyl)tetrahydro-2H-pyran-2-yl)-3-methylbut-2-enoyl)oxy)nonanoyl)oxy)butan-2-yl)oxiran-2-yl)methyl)-3,4-dihydroxytetrahydro-2H-pyran-2-yl)-3-methylbut-2-enoyl)oxy)undecanoic Acid
11-(((E)-4-((2S,3R,4R,5S)-5-(((2S,3S)-3-((2S,3S)-3-((9-(((E)-4-((2S,3R,4R,5S)-3,4-Dihydroxy-5-(((2S,3S)-3-((2S,3S)-3-hydroxybutan-2-yl)oxiran-2-yl)methyl)tetrahydro-2H-pyran-2-yl)-3-methylbut-2-enoyl)oxy)nonanoyl)oxy)butan-2-yl)oxiran-2-yl)methyl)-3,4-dihydroxytetrahydro-2H-pyran-2-yl)-3-methylbut-2-enoyl)oxy)undecanoic Acid
Catalogue No.:PA 13 0611000
CAS :
NA
Molecular Formula : C54H90O17
Molecular Weight : 1011.3


9-Oxodecyl (E)-4-((2S,3R,4R,5S)-3,4-dihydroxy-5-((3-hydroxy-4,5-dimethyltetrahydrofuran-2-yl)methyl)tetrahydro-2H-pyran-2-yl)-3-methylbut-2-enoate
9-Oxodecyl (E)-4-((2S,3R,4R,5S)-3,4-dihydroxy-5-((3-hydroxy-4,5-dimethyltetrahydrofuran-2-yl)methyl)tetrahydro-2H-pyran-2-yl)-3-methylbut-2-enoate
Catalogue No.:PA 13 0611001
CAS :
NA
Molecular Formula : C27H46O8
Molecular Weight : 498.66


9-(((E)-4-((2S,3R,4R,5S)-5-((4S,5S)-2-Chloro-3,5-dihydroxy-4-methylhexyl)-3,4-dihydroxytetrahydro-2H-pyran-2-yl)-1-hydroxy-3-methylbut-2-en-1-yl)oxy)nonanoic acid
9-(((E)-4-((2S,3R,4R,5S)-5-((4S,5S)-2-Chloro-3,5-dihydroxy-4-methylhexyl)-3,4-dihydroxytetrahydro-2H-pyran-2-yl)-1-hydroxy-3-methylbut-2-en-1-yl)oxy)nonanoic acid
Catalogue No.:PA 13 0611002
CAS :
NA
Molecular Formula : C26H47ClO9
Molecular Weight : 539.1


Benzyl 9-(((E)-4-((2S,3R,4R,5S)-3,4-dihydroxy-5-(((2S,3S)-3-((2S,3S)-3-hydroxybutan-2-yl)oxiran-2-yl)methyl)tetrahydro-2H-pyran-2-yl)-3-methylbut-2-enoyl)oxy)nonanoate
Benzyl 9-(((E)-4-((2S,3R,4R,5S)-3,4-dihydroxy-5-(((2S,3S)-3-((2S,3S)-3-hydroxybutan-2-yl)oxiran-2-yl)methyl)tetrahydro-2H-pyran-2-yl)-3-methylbut-2-enoyl)oxy)nonanoate
Catalogue No.:PA 13 0611003
CAS :
NA
Molecular Formula : C33H50O9
Molecular Weight : 590.75


9-(((E)-4-((2S,3R,4R,5S)-5-((4S,5S)-2-Chloro-3,5-dihydroxy-4-methylhexyl)-3,4-dihydroxytetrahydro-2H-pyran-2-yl)-3-methylbut-2-enoyl)oxy)nonanoic Acid
9-(((E)-4-((2S,3R,4R,5S)-5-((4S,5S)-2-Chloro-3,5-dihydroxy-4-methylhexyl)-3,4-dihydroxytetrahydro-2H-pyran-2-yl)-3-methylbut-2-enoyl)oxy)nonanoic Acid
Catalogue No.:PA 13 0611006
CAS :
NA
Molecular Formula : C26H45ClO9
Molecular Weight : 537.09


9-(((E)-4-((2S,3R,4R,5S)-5-(((2S,3S)-3-((2S,3S)-3-((9-(((E)-4-((1S,2S,3R,4R)-2,3-Dihydroxy-4-(((2S,3S)-3-((2S,3S)-3-hydroxybutan-2-yl)oxiran-2-yl)methyl)cyclohexyl)-3-methylbut-2-enoyl)oxy)nonanoyl)oxy)butan-2-yl)oxiran-2-yl)methyl)-3,4-dihydroxytetrahydro-2H-pyran-2-yl)-3-methylbut-2-enoyl)oxy)nonanoic Acid
9-(((E)-4-((2S,3R,4R,5S)-5-(((2S,3S)-3-((2S,3S)-3-((9-(((E)-4-((1S,2S,3R,4R)-2,3-Dihydroxy-4-(((2S,3S)-3-((2S,3S)-3-hydroxybutan-2-yl)oxiran-2-yl)methyl)cyclohexyl)-3-methylbut-2-enoyl)oxy)nonanoyl)oxy)butan-2-yl)oxiran-2-yl)methyl)-3,4-dihydroxytetrahydro-2H-pyran-2-yl)-3-methylbut-2-enoyl)oxy)nonanoic Acid
Catalogue No.:PA 13 0611007
CAS :
NA
Molecular Formula : C53H88O16
Molecular Weight : 981.27