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23893-13-2

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23893-13-2 Structure

23893-13-2 Structure
IdentificationBack Directory
[Name]

ANHYDROERYTHROMYCIN A
[CAS]

23893-13-2
[Synonyms]

EM 202
BRL 46355ER
Anhydroerythromycin
ANHYDROERYTHROMYCIN A
Erythromycin anhydride
6,9,12-Anhydroerythromycin A
Erythromycin Anhydride, Impurity D
6,9:9,12-Diepoxy-9-deoxo-6,12-dideoxyerythromycin
9-Deoxo-6,12-dideoxy-6,9:9,12-diepoxy-erythromycin
Erythromycin, 9-deoxo-6,12-dideoxy-6,9:9,12-diepoxy-
[Molecular Formula]

C37H65NO12
[MOL File]

23893-13-2.mol
[Molecular Weight]

715.916
Chemical PropertiesBack Directory
[Appearance]

Off-White to Pale Yellow Solid
[Melting point ]

125-127°C
[storage temp. ]

−20°C
Hazard InformationBack Directory
[Chemical Properties]

Off-White to Pale Yellow Solid
[Uses]

Anhydroerythromycin A is a degradation product of erythromycin formed by a complex internal rearrangement of erythromycin A on exposure to acidic conditions. In acid, erythromycin A forms the enol ether and then undergoes a second internal cyclisation of the C12–OH and C9 enol to afford the ketal, anhydroerythromycin A. Anhydroerythromycin A is an important analytical standard for erythromycin A stability studies.
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