PRODUCT NAME: Levofloxacin EP Impurity B
Date of Mfg: Sample COA	RETEST DATE: Sample COA

Catalogue Number	LEF-007
Item/Batch Number	Sample COA
Quantity	Sample COA
CAS Number	117707-40-1
Mol. Formula	C17H18FN3O4
Molecular Wt	347.34
IUPAC	(2S)-7-fluoro-2-methyl-10-oxo-6-piperazin-1-yl-4-oxa-1-azatricyclo[7.3.1.05,13]trideca-5(13),6,8,11-tetraene-11-carboxylic acid
Synonyms	Levofloxacin Piperazine Impurity; (S)-9-Fluoro-3-methyl-7-oxo-10-(1-piperazinyl)-2,3-dihydro-7H-pyrido[1,2,3-de][1,4]-benzoxazine-6-carboxylic Acid; Desmethyl Levofloxacin; Desmethyl Levofloxacin
Long Term Storage Condition	store at 2-8°C
Handling instruction	Sample COA

Test	Results
Appearance	Off White Powder
Water content by KF/TGA	Sample COA
% Potency = [100 - (Water content by KF)] X HPLC Purity)] / 100	Sample COA
Identification by HNMR	Sample COA
Identification By IR	Sample COA
Mass (ESI)	Sample COA
Solubility	ethanol, DMSO, dimethyl formamide (DMF)
Purity	98%
Analysis Date (Release Date)	Sample COA
Attachments	Sample COA
Other Information	Sample COA
Note: This material can be used as a referance standard and is for research purpose ONLY and not for human consumption