克拉霉素雜質(zhì)標(biāo)準(zhǔn)品A

R1 = CH3, R2 = OH, R3 = H: 2-demethyl-2-(hydroxymethyl)-6-O-methylerythromycin A (clarithromycin F)

B

R1 = R2 = R3 = H: 6-O-methyl-15-norerythromycin A

P

R1 = R3 = CH3, R2 = H: 4′,6-di-O-methylerythromycin A

克拉霉素雜質(zhì)C

R1 = R2 = CH3, R3 = H: 6-O-methylerythromycin A (E)-9-oxime

克拉霉素雜質(zhì)G

R1 = R2 = R3 = CH3: 6-O-methylerythromycin A (E)-9-(O-methyloxime)

克拉霉素雜質(zhì)J

R1 = CH3, R2 = R3 = H: erythromycin A (E)-9-oxime

克拉霉素雜質(zhì)M

R1 = R3 = H, R2 = CH3: 3″-N-demethyl-6-O-methylerythromycin A (E)-9-oxime

克拉霉素雜質(zhì)D

R1 = R2 = R3 = H: 3″-N-demethyl-6-O-methylerythromycin A

克拉霉素雜質(zhì)E

R1 = R2 = CH3, R3 = H: 6,11-di-O-methylerythromycin A

克拉霉素雜質(zhì)F

R1 = R3 = CH3, R2 = H: 6,12-di-O-methylerythromycin A

克拉霉素雜質(zhì)H

R1 = CHO, R2 = R3 = H: 3″-N-demethyl-3′-N-formyl-6-O-methylerythromycin A

克拉霉素雜質(zhì)I

3-O-decladinosyl-6-O-methylerythromycin A

克拉霉素雜質(zhì)K

(1S,2R,5R,6S,7S,8R,9R,11Z)-2-ethyl-6-hydroxy-9-methoxy-1,5,7,9,11,13-hexamethyl-8-[[3,4,6-trideoxy-3-(dimethylamino)-β-d-xylo-hexopyranosyl]oxy]-3,15-dioxabicyclo[10.2.1]pentadeca-11,13-dien-4-one (3-O-decladinosyl-8,9:10,11-dianhydro-6-O-methylerythromycin A-9,12-hemiketal)

克拉霉素雜質(zhì)L

R = H: 6-O-methylerythromycin A (Z)-9-oxime

克拉霉素雜質(zhì)O

R = CH3: 6-O-methylerythromycin A (Z)-9-(O-methyloxime)

克拉霉素雜質(zhì)N

(10E)-10,11-didehydro-11-deoxy-6-O-methylerythromycin A