Acarbose EP Impurity E

Chemical Name: O-4,6-dideoxy-4-[[(1S,4R,5S,6S)-4,5,6-trihydroxy-3-(hydroxymethyl)cyclohex-2-enyl]amino]-α-D-glucopyranosyl-(1→4)-O-α-D-glucopyranosyl-(1→4)-O-α-D-glucopyranosyl-(1→4)-D-arabino-hex-2-ulopyranose ( as per EP); O-4,6-Dideoxy-4-{[(1S,4R,5S,6S)-4,5,6-trihydroxy-3-(hydroxymethyl)cyclohex-2-enyl]amino}-α-d-glucopyranosyl-(1→4)-O-α-d-glucopyranosyl-(1→4)-O-α-d-glucopyranosyl-(1→4)-d-arabino-hex-2-ulopyranose (as per USP)