clarithromycin and its Impurities

Clarithromycin may be bacteriostatic or bactericidal depending on the organism and drug concentration. It is a semisynthetic macrolide antibiotic derived from erythromycin, inhibits bacterial protein synthesis by binding to the bacterial 50S ribosomal subunit. Binding inhibits peptidyl transferase activity and interferes with amino acid translocation during the translation and protein assembly process.. Reference standards of Clarithromycin API, and its pharmacopeial, non pharmacopeial impurities, and stable isotopes are listed below

Displaying 49 results for clarithromycin Impurities
PA 03 60000

Clarithromycin - API

Clarithromycin


  • Catalogue No.:PA 03 60000

  • CAS :

    81103-11-9

  • Molecular Formula : C38H69NO13

  • Molecular Weight : 747.95

PA 03 60010

Clarithromycin - Impurity A

Clarithromycin F


  • Catalogue No.:PA 03 60010

  • CAS :

    124412-58-4

  • Molecular Formula : C38H69NO14

  • Molecular Weight : 763.95

PA 03 60020

Clarithromycin - Impurity B

6-O-Methyl-15-norerythromycin A


  • Catalogue No.:PA 03 60020

  • CAS :

    299409-85-1

  • Molecular Formula : C37H67NO13

  • Molecular Weight : 733.93

PA 03 60030

Clarithromycin - Impurity C

6-O-Methylerythromycin 9-Oxime


  • Catalogue No.:PA 03 60030

  • CAS :

    127253-06-9

  • Molecular Formula : C38H70N2O13

  • Molecular Weight : 762.97

PA 03 60040

Clarithromycin - Impurity D

N-Desmethyl Clarithromycin


  • Catalogue No.:PA 03 60040

  • CAS :

    101666-68-6

  • Molecular Formula : C37H67NO13

  • Molecular Weight : 733.93

PA 03 60050

Clarithromycin - Impurity E

6,11-Di-O-methyl Erythromycin


  • Catalogue No.:PA 03 60050

  • CAS :

    81103-14-2

  • Molecular Formula : C39H71NO13

  • Molecular Weight : 761.98

PA 03 60060

Clarithromycin - Impurity F

12-O-Methyl Clarithromycin


  • Catalogue No.:PA 03 60060

  • CAS :

    128940-83-0

  • Molecular Formula : C39H71NO13

  • Molecular Weight : 761.98

PA 03 60070

Clarithromycin - Impurity G

Clarithromycin (9E)-O-Methyloxime


  • Catalogue No.:PA 03 60070

  • CAS :

    127182-44-9

  • Molecular Formula : C39H72N2O13

  • Molecular Weight : 776.99

PA 03 60080

Clarithromycin - Impurity H

N-Demethyl-N-formyl Clarithromycin


  • Catalogue No.:PA 03 60080

  • CAS :

    127140-69-6

  • Molecular Formula : C38H67NO14

  • Molecular Weight : 761.94

PA 03 60090

Clarithromycin - Impurity I

De(cladinosyl) Clarithromycin


  • Catalogue No.:PA 03 60090

  • CAS :

    118058-74-5

  • Molecular Formula : C30H55NO10

  • Molecular Weight : 589.76

PA 03 60100

Clarithromycin - Impurity J

Erythromycin A Oxime


  • Catalogue No.:PA 03 60100

  • CAS :

    13127-18-9

  • Molecular Formula : C37H68N2O13

  • Molecular Weight : 748.94

PA 03 60110

Clarithromycin - Impurity K

3-O-De(cladinosyl)-8,9,10,11-tetradehydro-9-deoxo-11,12-dideoxy-9,12-epoxy Clarithromycin


  • Catalogue No.:PA 03 60110

  • CAS :

    127157-35-1

  • Molecular Formula : C30H51NO8

  • Molecular Weight : 553.73

PA 03 60120

Clarithromycin - Impurity L

Clarithromycin (9Z)-Oxime


  • Catalogue No.:PA 03 60120

  • CAS :

    127253-05-8

  • Molecular Formula : C38H70N2O13

  • Molecular Weight : 762.97

PA 03 60130

Clarithromycin - Impurity M

3''-N-Demethyl-6-O-methylerythromycin A (E)-9-oxime


  • Catalogue No.:PA 03 60130

  • CAS :

    127182-43-8

  • Molecular Formula : C37H68N2O13

  • Molecular Weight : 748.94

PA 03 60140

Clarithromycin - Impurity N

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


  • Catalogue No.:PA 03 60140

  • CAS :

    144604-03-5

  • Molecular Formula : C38H67NO12

  • Molecular Weight : 729.94

PA 03 60150

Clarithromycin - Impurity O

Clarithromycin (9Z)-O-Methyloxime


  • Catalogue No.:PA 03 60150

  • CAS :

    127252-80-6

  • Molecular Formula : C39H72N2O13

  • Molecular Weight : 776.99

PA 03 60160

Clarithromycin - Impurity P

4′,6-Di-O-methylerythromycin A


  • Catalogue No.:PA 03 60160

  • CAS :

    123967-58-8

  • Molecular Formula : C39H71NO13

  • Molecular Weight : 761.98

latest product
PA 03 60510

N-Demethyl Erythromycin A

N-Demethyl Erythromycin A


  • Catalogue No.:PA 03 60510

  • CAS :

    992-62-1

  • Molecular Formula : C36H65NO13

  • Molecular Weight : 719.9

PA 03 60520

6-O-Methylerythromycin A 9-(E)-O-(1-isopropoxycyclohexyl)-oxime

6-O-Methylerythromycin A 9-(E)-O-(1-isopropoxycyclohexyl)-oxime


  • Catalogue No.:PA 03 60520

  • CAS :

    156715-14-9

  • Molecular Formula : C47H86N2O14

  • Molecular Weight : 903.19

PA 03 60530

9-Ketal Oxime Clarithromycin

9-Ketal Oxime Clarithromycin


  • Catalogue No.:PA 03 60530

  • CAS :

    NA

  • Molecular Formula : C42H78N2O14

  • Molecular Weight : 835.07

PA 03 60540

Clarithromycin KLN-6

Clarithromycin KLN-6


  • Catalogue No.:PA 03 60540

  • CAS :

    NA

  • Molecular Formula : C41H76N2O14

  • Molecular Weight : 821.05

PA 03 60550

Clarithromycin Lactobionate

Clarithromycin Lactobionate


  • Catalogue No.:PA 03 60550

  • CAS :

    NA

  • Molecular Formula : C50H91NO25

  • Molecular Weight : 1106.25

PA 03 60560

Clarithromycin N-oxide

Clarithromycin N-oxide


  • Catalogue No.:PA 03 60560

  • CAS :

    118074-07-0

  • Molecular Formula : C38H69NO14

  • Molecular Weight : 763.95

PA STI 021830

Clarithromycin-N-methyl-d3

Clarithromycin-N-methyl-d3


  • Catalogue No.:PA STI 021830

  • CAS :

    NA

  • Molecular Formula : C38H66D3NO13

  • Molecular Weight : 750.97

PA STI 021831

Clathromycin-13Cd3

Clathromycin-13Cd3


  • Catalogue No.:PA STI 021831

  • CAS :

    NA

  • Molecular Formula : C3713CH66D3NO13

  • Molecular Weight : 751.96

PA USP1134379

Clarithromycin (1134379)


  • Catalogue No.:PA USP1134379

  • CAS :

    81103-11-9

  • Molecular Formula :

  • Molecular Weight : NA

PA BP833RB

clarithromycin (833RB)


  • Catalogue No.:PA BP833RB

  • CAS :

    NA

  • Molecular Formula :

  • Molecular Weight : NA

PA BP834RB

clarithromycin impurity E (834RB)


  • Catalogue No.:PA BP834RB

  • CAS :

    NA

  • Molecular Formula :

  • Molecular Weight : NA

PA EPY0000321

Clarithromycin for peak identification (Y0000321)


  • Catalogue No.:PA EPY0000321

  • CAS :

    NA

  • Molecular Formula :

  • Molecular Weight : NA

PA USP1134380

Clarithromycin Related Compound A (6,11-di-O-methylerythromycin A) (1134380)


  • Catalogue No.:PA USP1134380

  • CAS :

    NA

  • Molecular Formula :

  • Molecular Weight : NA

PA USP1134619

Clarithromycin Impurity D (N-desmethyl clarithromycin) (1134619)


  • Catalogue No.:PA USP1134619

  • CAS :

    101666-68-6

  • Molecular Formula :

  • Molecular Weight : NA

PA USP1134631

Clarithromycin Impurity Q (N-oxide clarithromycin) (1134631)


  • Catalogue No.:PA USP1134631

  • CAS :

    118074-07-0

  • Molecular Formula :

  • Molecular Weight : NA

PA USP1134620

Clarithromycin Impurity H (N-formyl clarithromycin) (1134620)


  • Catalogue No.:PA USP1134620

  • CAS :

    127140-69-6

  • Molecular Formula :

  • Molecular Weight : NA

PA USP1134390

Clarithromycin Identity (1134390)


  • Catalogue No.:PA USP1134390

  • CAS :

    81103-11-9

  • Molecular Formula :

  • Molecular Weight : NA

PA USP1134642

Clarithromycin Impurity R (N-desmethyl erythromycin A) (1134642)


  • Catalogue No.:PA USP1134642

  • CAS :

    992-62-1

  • Molecular Formula :

  • Molecular Weight : NA

PA EPY0000320

Clarithromycin (Y0000320)


  • Catalogue No.:PA EPY0000320

  • CAS :

    NA

  • Molecular Formula :

  • Molecular Weight : NA

PA 03 60570

(3R,4S,5S,6R,7R,9R,11S,12R,13S,14R)-6-(((2S,3R,4S,6R)-4-(Dimethylamino)-3-hydroxy-6-methyltetrahydro-2H-pyran-2-yl)oxy)-14-ethyl-12,13-dihydroxy-4-(((2R,4R,5S,6S)-5-hydroxy-4-methoxy-4,6-dimethyltetrahydro-2H-pyran-2-yl)oxy)-7-methoxy-10-(methoxyimino)-3,5,7,9,11,13-hexamethyloxacyclotetradecan-2-one

(3R,4S,5S,6R,7R,9R,11S,12R,13S,14R)-6-(((2S,3R,4S,6R)-4-(Dimethylamino)-3-hydroxy-6-methyltetrahydro-2H-pyran-2-yl)oxy)-14-ethyl-12,13-dihydroxy-4-(((2R,4R,5S,6S)-5-hydroxy-4-methoxy-4,6-dimethyltetrahydro-2H-pyran-2-yl)oxy)-7-methoxy-10-(methoxyimino)-3,5,7,9,11,13-hexamethyloxacyclotetradecan-2-one


  • Catalogue No.:PA 03 60570

  • CAS :

    107216-09-1

  • Molecular Formula : C39H72N2O13

  • Molecular Weight : 777.01

PA 03 60580

(3R,4S,5S,6R,7R,9R,11R,12R,13S,14R)-6-(((2S,3R,4S,6R)-4-(Dimethylamino)-3-hydroxy-6-methyltetrahydro-2H-pyran-2-yl)oxy)-12,13-dihydroxy-4-(((2R,4R,5R,6R)-5-hydroxy-4,6-dimethoxy-4-methyltetrahydro-2H-pyran-2-yl)oxy)-7-methoxy-3,5,7,9,11,13,14-heptamethyloxacyclotetradecane-2,10-dione

(3R,4S,5S,6R,7R,9R,11R,12R,13S,14R)-6-(((2S,3R,4S,6R)-4-(Dimethylamino)-3-hydroxy-6-methyltetrahydro-2H-pyran-2-yl)oxy)-12,13-dihydroxy-4-(((2R,4R,5R,6R)-5-hydroxy-4,6-dimethoxy-4-methyltetrahydro-2H-pyran-2-yl)oxy)-7-methoxy-3,5,7,9,11,13,14-heptamethyloxacyclotetradecane-2,10-dione


  • Catalogue No.:PA 03 60580

  • CAS :

    NA

  • Molecular Formula : C37H67NO14

  • Molecular Weight : 749.94

PA IPIPRS 30 14

Clarithromycin (IPRS/30/14)


  • Catalogue No.:PA IPIPRS 30 14

  • CAS :

    NA

  • Molecular Formula :

  • Molecular Weight : NA

PA 03 60590

Clarithromycin 9-Oxime

Clarithromycin 9-Oxime


  • Catalogue No.:PA 03 60590

  • CAS :

    103450-87-9

  • Molecular Formula : C38H70N2O13

  • Molecular Weight : 762.98

PA 03 60600

(3R,4S,5S,6R,7R,9R,11S,12R,13S,14R,E)-6-(((2S,3R,4S,6R)-4-(Dimethylamino)-6-methyl-3-((trimethylsilyl)oxy)tetrahydro-2H-pyran-2-yl)oxy)-7-ethoxy-14-ethyl-12,13-dihydroxy-4-(((2R,4R,5S,6S)-4-methoxy-4,6-dimethyl-5-((trimethylsilyl)oxy)tetrahydro-2H-pyran-2-yl)oxy)-10-(((2-methoxypropan-2-yl)oxy)imino)-3,5,7,9,11,13-hexamethyloxacyclotetradecan-2-one

(3R,4S,5S,6R,7R,9R,11S,12R,13S,14R,E)-6-(((2S,3R,4S,6R)-4-(Dimethylamino)-6-methyl-3-((trimethylsilyl)oxy)tetrahydro-2H-pyran-2-yl)oxy)-7-ethoxy-14-ethyl-12,13-dihydroxy-4-(((2R,4R,5S,6S)-4-methoxy-4,6-dimethyl-5-((trimethylsilyl)oxy)tetrahydro-2H-pyran-2-yl)oxy)-10-(((2-methoxypropan-2-yl)oxy)imino)-3,5,7,9,11,13-hexamethyloxacyclotetradecan-2-one


  • Catalogue No.:PA 03 60600

  • CAS :

    NA

  • Molecular Formula : C49H96N2O14Si2

  • Molecular Weight : 993.48

PA 03 60610

(3R,4S,5S,6R,7R,9R,11S,12R,13S,14R,E)-6-(((2S,3R,4S,6R)-4-(Dimethylamino)-3-hydroxy-6-methyltetrahydro-2H-pyran-2-yl)oxy)-10-(((2-ethoxypropan-2-yl)oxy)imino)-14-ethyl-7,12,13-trihydroxy-4-(((2R,4R,5S,6S)-5-hydroxy-4-methoxy-4,6-dimethyltetrahydro-2H-pyran-2-yl)oxy)-3,5,7,9,11,13-hexamethyloxacyclotetradecan-2-one

(3R,4S,5S,6R,7R,9R,11S,12R,13S,14R,E)-6-(((2S,3R,4S,6R)-4-(Dimethylamino)-3-hydroxy-6-methyltetrahydro-2H-pyran-2-yl)oxy)-10-(((2-ethoxypropan-2-yl)oxy)imino)-14-ethyl-7,12,13-trihydroxy-4-(((2R,4R,5S,6S)-5-hydroxy-4-methoxy-4,6-dimethyltetrahydro-2H-pyran-2-yl)oxy)-3,5,7,9,11,13-hexamethyloxacyclotetradecan-2-one


  • Catalogue No.:PA 03 60610

  • CAS :

    119665-77-9

  • Molecular Formula : C42H78N2O14

  • Molecular Weight : 835.09

PAI 03 034010

(3R,4S,5S,6R,9R,11S,12R,13S,14R,E)-6-(((2S,4S,6S)-4-(dimethylamino)-3-hydroxy-6-methyltetrahydro-2H-pyran-2-yl)oxy)-14-ethyl-12,13-dihydroxy-4-(((2R,4R,5S,6S)-5-hydroxy-4-methoxy-4,6-dimethyltetrahydro-2H-pyran-2-yl)oxy)-10-(hydroxyimino)-7-methoxy-3,5,7,9,11,13-hexamethyloxacyclotetradecan-2-one

(3R,4S,5S,6R,9R,11S,12R,13S,14R,E)-6-(((2S,4S,6S)-4-(dimethylamino)-3-hydroxy-6-methyltetrahydro-2H-pyran-2-yl)oxy)-14-ethyl-12,13-dihydroxy-4-(((2R,4R,5S,6S)-5-hydroxy-4-methoxy-4,6-dimethyltetrahydro-2H-pyran-2-yl)oxy)-10-(hydroxyimino)-7-methoxy-3,5,7,9,11,13-hexamethyloxacyclotetradecan-2-one


  • Catalogue No.:PAI 03 034010

  • CAS :

    NA

  • Molecular Formula : C38H70N2O13

  • Molecular Weight : 762.98

PAI 03 034020

(3R,4S,5S,6R,9R,11S,12R,13S,14R,E)-6-(((2S,4S,6S)-4-(Dimethylamino)-6-methyl-3-((trimethylsilyl)oxy)tetrahydro-2H-pyran-2-yl)oxy)-14-ethyl-12,13-dihydroxy-7-methoxy-4-(((2R,4R,5S,6S)-4-methoxy-4,6-dimethyl-5-((trimethylsilyl)oxy)tetrahydro-2H-pyran-2-yl)oxy)-10-(((2-methoxypropan-2-yl)oxy)imino)-3,5,7,9,11,13-hexamethyloxacyclotetradecan-2-one

(3R,4S,5S,6R,9R,11S,12R,13S,14R,E)-6-(((2S,4S,6S)-4-(Dimethylamino)-6-methyl-3-((trimethylsilyl)oxy)tetrahydro-2H-pyran-2-yl)oxy)-14-ethyl-12,13-dihydroxy-7-methoxy-4-(((2R,4R,5S,6S)-4-methoxy-4,6-dimethyl-5-((trimethylsilyl)oxy)tetrahydro-2H-pyran-2-yl)oxy)-10-(((2-methoxypropan-2-yl)oxy)imino)-3,5,7,9,11,13-hexamethyloxacyclotetradecan-2-one


  • Catalogue No.:PAI 03 034020

  • CAS :

    NA

  • Molecular Formula : C48H94N2O14Si2

  • Molecular Weight : 979.45

PAI 03 034030

(3R,4S,5S,6R,9R,11S,12R,13S,14R,E)-4-(((2R,4R,5S,6S)-4,5-Dimethoxy-4,6-dimethyltetrahydro-2H-pyran-2-yl)oxy)-6-(((2S,4S,6S)-4-(dimethylamino)-6-methyl-3-((trimethylsilyl)oxy)tetrahydro-2H-pyran-2-yl)oxy)-14-ethyl-12,13-dihydroxy-7-methoxy-10-(((2-methoxypropan-2-yl)oxy)imino)-3,5,7,9,11,13-hexamethyloxacyclotetradecan-2-one

(3R,4S,5S,6R,9R,11S,12R,13S,14R,E)-4-(((2R,4R,5S,6S)-4,5-Dimethoxy-4,6-dimethyltetrahydro-2H-pyran-2-yl)oxy)-6-(((2S,4S,6S)-4-(dimethylamino)-6-methyl-3-((trimethylsilyl)oxy)tetrahydro-2H-pyran-2-yl)oxy)-14-ethyl-12,13-dihydroxy-7-methoxy-10-(((2-methoxypropan-2-yl)oxy)imino)-3,5,7,9,11,13-hexamethyloxacyclotetradecan-2-one


  • Catalogue No.:PAI 03 034030

  • CAS :

    NA

  • Molecular Formula : C46H88N2O14Si

  • Molecular Weight : 921.30

PAI 03 034040

(3R,4S,5S,6R,9R,11S,12R,13S,14R,E)-4-(((2R,4R,5S,6S)-4,5-Dimethoxy-4,6-dimethyltetrahydro-2H-pyran-2-yl)oxy)-6-(((2S,4S,6S)-4-(dimethylamino)-3-hydroxy-6-methyltetrahydro-2H-pyran-2-yl)oxy)-14-ethyl-12,13-dihydroxy-10-(hydroxyimino)-7-methoxy-3,5,7,9,11,13-hexamethyloxacyclotetradecan-2-one

(3R,4S,5S,6R,9R,11S,12R,13S,14R,E)-4-(((2R,4R,5S,6S)-4,5-Dimethoxy-4,6-dimethyltetrahydro-2H-pyran-2-yl)oxy)-6-(((2S,4S,6S)-4-(dimethylamino)-3-hydroxy-6-methyltetrahydro-2H-pyran-2-yl)oxy)-14-ethyl-12,13-dihydroxy-10-(hydroxyimino)-7-methoxy-3,5,7,9,11,13-hexamethyloxacyclotetradecan-2-one


  • Catalogue No.:PAI 03 034040

  • CAS :

    NA

  • Molecular Formula : C39H72N2O13

  • Molecular Weight : 777.01

PAI 03 034050

(3R,4S,5S,6R,9R,11S,12R,13S,14R,Z)-14-Ethyl-12,13-dihydroxy-4-(((2R,4R,5S,6S)-5-hydroxy-4-methoxy-4,6-dimethyltetrahydro-2H-pyran-2-yl)oxy)-6-(((2S,4S,6S)-3-hydroxy-6-methyl-4-(methylamino)tetrahydro-2H-pyran-2-yl)oxy)-10-(hydroxyimino)-7-methoxy-3,5,7,9,11,13-hexamethyloxacyclotetradecan-2-one

(3R,4S,5S,6R,9R,11S,12R,13S,14R,Z)-14-Ethyl-12,13-dihydroxy-4-(((2R,4R,5S,6S)-5-hydroxy-4-methoxy-4,6-dimethyltetrahydro-2H-pyran-2-yl)oxy)-6-(((2S,4S,6S)-3-hydroxy-6-methyl-4-(methylamino)tetrahydro-2H-pyran-2-yl)oxy)-10-(hydroxyimino)-7-methoxy-3,5,7,9,11,13-hexamethyloxacyclotetradecan-2-one


  • Catalogue No.:PAI 03 034050

  • CAS :

    NA

  • Molecular Formula : C37H68N2O13

  • Molecular Weight : 748.95

PA 03 0601000

14-Hydroxy Clarithromycin

14-Hydroxy Clarithromycin


  • Catalogue No.:PA 03 0601000

  • CAS :

    110671-78-8

  • Molecular Formula : C38H69NO14

  • Molecular Weight : 763.96

PA 03 0601001

Clarithromycin Identity

Clarithromycin Identity


  • Catalogue No.:PA 03 0601001

  • CAS :

    NA

  • Molecular Formula : NA

  • Molecular Weight : NA