Levonorgestrel Impurities

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Impurity structure Parent Drug Name Name of Impurity Catalogue No. CAS No.
Delta-5(10)-8-alfa-Levonorgestrel Levonorgestrel

Delta-5(10)-8-alfa-Levonorgestrel

VE0015996 5772-36-1
Levonorgestrel EP Impurity A Levonorgestrel

Levonorgestrel EP Impurity A

VE006934 1260525-53-8; 110785-09-6
Levonorgestrel EP Impurity B Levonorgestrel

Levonorgestrel EP Impurity B

VE006935 19914-67-1
Levonorgestrel EP Impurity C Levonorgestrel

Levonorgestrel EP Impurity C

VE009121 1337972-89-0
Levonorgestrel EP Impurity D Levonorgestrel

Levonorgestrel EP Impurity D

VE0016001 32419-58-2
Levonorgestrel EP Impurity G Levonorgestrel

Levonorgestrel EP Impurity G

VE009120 87585-03-3
Levonorgestrel EP Impurity H Levonorgestrel

Levonorgestrel EP Impurity H

VE006936 55555-97-0
Levonorgestrel EP Impurity I Levonorgestrel

Levonorgestrel EP Impurity I

VL4240001 20402-62-4
Levonorgestrel EP Impurity J Levonorgestrel

Levonorgestrel EP Impurity J

VE0015998 1175109-63-3
Levonorgestrel EP Impurity K Levonorgestrel

Levonorgestrel EP Impurity K

VE006937 793-55-5
Levonorgestrel EP Impurity L Levonorgestrel

Levonorgestrel EP Impurity L

VE006615 21800-83-9
Levonorgestrel EP impurity M Levonorgestrel

Levonorgestrel EP impurity M

VE006231 51087-61-7
Levonorgestrel EP Impurity N Levonorgestrel

Levonorgestrel EP Impurity N

VE0016007 4222-96-2
Levonorgestrel EP Impurity O Levonorgestrel

Levonorgestrel EP Impurity O

VE006938 155683-60-6
Levonorgestrel EP Impurity P Levonorgestrel

Levonorgestrel EP Impurity P

VE0015990 100021-05-4
Levonorgestrel EP Impurity Q Levonorgestrel

Levonorgestrel EP Impurity Q

VE0015992 14507-49-4
Levonorgestrel EP Impurity R Levonorgestrel

Levonorgestrel EP Impurity R

VE0015991 2322-77-2
Levonorgestrel EP Impurity S Levonorgestrel

Levonorgestrel EP Impurity S

VE006383 176254-10-7
Levonorgestrel EP Impurity T Levonorgestrel

Levonorgestrel EP Impurity T

VE0015994 14507-51-8
Levonorgestrel EP Impurity U Levonorgestrel

Levonorgestrel EP Impurity U

VE006939 68-22-4
Levonorgestrel EP Impurity V Levonorgestrel

Levonorgestrel EP Impurity V

VE006940 14009-70-2
Levonorgestrel EP Impurity W Levonorgestrel

Levonorgestrel EP Impurity W

VE006941 155683-59-3
Budesonide for System Suitability CRS (Y0001148) Levonorgestrel

Levonorgestrel for System Suitability 1 CRS (Y0001431)

PVE00230 797-63-7
Levonorgestrel Impurity 1 Levonorgestrel

Levonorgestrel Impurity 1

VE0015981 7443-72-3
Levonorgestrel Impurity 17 Levonorgestrel

Levonorgestrel Impurity 17

VE0016008 178737-52-5
Levonorgestrel Impurity 19 Levonorgestrel

Levonorgestrel Impurity 19

VE0016009 N/A
Levonorgestrel Impurity 3 (Mixture of Diastereomers) Levonorgestrel

Levonorgestrel Impurity 3 (Mixture of Diastereomers)

VE0015982 N/A
Levonorgestrel Impurity 4 Levonorgestrel

Levonorgestrel Impurity 4

VE0015983 848-04-4
Levonorgestrel Impurity 5 Levonorgestrel

Levonorgestrel Impurity 5

VE0015984 N/A
Levonorgestrel Impurity 7 (Mixture of Diastereomers) Levonorgestrel

Levonorgestrel Impurity 7 (Mixture of Diastereomers)

VE0015985 25073-30-7
Levonorgestrel Impurity 8 Levonorgestrel

Levonorgestrel Impurity 8

VE0015986 N/A
Levonorgestrel Impurity 9 Levonorgestrel

Levonorgestrel Impurity 9

VE0015988 61921-57-1
Levonorgestrel-D6 Levonorgestrel

Levonorgestrel-D6

DVE00754 2376035-98-0
10-alpha-Hydroxy Levonorgestrel Levonorgestrel

10-alpha-Hydroxy Levonorgestrel

VE0015995 N/A
3-alfa,5-beta-Tetrahydro Levonorgestrel Levonorgestrel

3-alfa,5-beta-Tetrahydro Levonorgestrel

VE0016004 19351-16-7
3-beta,5-beta-Tetrahydro Levonorgestrel Levonorgestrel

3-beta,5-beta-Tetrahydro Levonorgestrel

VE0016002 19351-17-8