Levonorgestrel Impurity 4/Levonorgestrel EP Impurity S|176254-10-7Shanghai Forever Synthesis Co.,Ltd.

New Products

Bendamustine impurity 1/Bendamustine Impurity D

Olanzapine impurity 4/Olanzapine Thiolactam Impurity

Atorvastatin impurity 4/Atorvastatin EP Impurity A Calcium Salt

Entecavir impurity 1/(1R,3R,4R)-Entecavir

Calcipotriol EP Impurity A

pre-Calcitriol PTAD Adduct/Calcitriol EP Impurity C

Isocyclosporine A

Clobetasol Propionate EP Impurity E

15(S)-Latanoprost

(15R)-Bimatoprost/15-epi Bimatoprost

15-Keto Travoprost

15S-Cloprostenol/15-epi Cloprostenol

Azithromycin EP Impurity H

Azithromycin EP Impurity I

Roxithromycin EP Impurity B

Erythromycin EP Impurity A

Erythromycin EP Impurity B

Clarithromycin EP Impurity A

Clarithromycin EP Impurity B

Clarithromycin EP Impurity F

Rivaroxaban impurity 3/ Dechloro-Rivaroxaban

Clindamycin Phosphate EP Impurity B/Clindamycin B 2-Phosphate

Riociguat Impurity 9/2-Desfluoro-3-fluoro-Riociguat

Riociguat Impurity 19/N-Desmethyl Riociguat

Sunitinib Amide Impurity

Caspofungin impurity 1/Caspofungin Impurity A

Lurasidone impurity 4/Lurasidone Sulfoxide

Lurasidone impurity 5/Lurasidone Sulfone

Lurasidone impurity 7/Lurasidone Piperazine N-Oxide

Rivaroxaban impurity 6/ Rivaroxaban Pseudodimer

Afatinib impurity 1/Afatinib Dimer Impurity

Paliperidone impurity 10/Paliperidone N-Oxide

Paliperidone impurity 11/Paliperidone 9-Keto Impurity

Azithromycin EP Impurity L/Azithromycin N-Oxide

Fulvestrant impurity 5/Fulvestrant EP Impurity E

Fluticasone Propionate EP Impurity B/Fluticasone Sulfenic Acid Propionate

Pemetrexed impurity 3/Pemetrexed EP Impurity D

Vinorelbine EP Impurity G

Darunavir impurity 2/Darunavir CBZ Amino Impurity

Prednisolone impurity 4/Prednisolone EP Impurity F

Prednisolone impurity 6/Prednisolone EP Impurity J

Products

Product ID:	FY-LEG04
Chemical Name:	Levonorgestrel Impurity 4/Levonorgestrel EP Impurity S
Synonyms:	13-Ethyl-3-methoxy-18,19-dinor-17α-pregna-3,5-dien-20-yn-17-ol
Cas No.:	176254-10-7
Molecular Formula:	C₂₂H₃₀O₂
Molecular Weight:	326.48
Specification:	95%
Molecular Structure: