深圳遠揚化學可提供阿法替尼申報所用全套雜質， 隨貨附CoA證書，HNMR，MS，HPLC圖譜，純度符合申報要求，西他沙星雜質為我司優勢雜質，長期備有庫存，發貨快。如需西他沙星雜質相關詳細信息，歡迎我司業務人員獲取。

西他沙星（sitafloxacin hydrate）化學名為7-[(7S)-7- 氨基-5-氮雜螺[2.4]庚-5-基]-8- 氯-6- 氟-1-[(1R,2S)-cis-2-氟環丙基]-1,4-二氫-4-氧代-3-喹啉羧酸，是*制藥三共株式會社（Daiichi Sankyo）開發的一廣譜喹諾酮類抗菌藥，臨床用其一水合物，用于治療嚴重難治性感染性疾病。

 除自主品牌雜質對照品外，我司還代理英國NIBSC標準品，美國劍橋CIL同位素標準品，美國NIST標準物質，歐洲標準局IRMM標準物質，加拿大TRC標準品，TLC標準品，MOLCAN標準品，NRC標準品等，歡迎洽談。

Sitafloxacin

7-((S)-7-amino-5-azaspiro[2.4]heptan-5-yl)-8-chloro-6-fluoro-1-((1R,2S)-2-fluorocyclopropyl)-4-oxo-1,4-dihydroquinoline-3-carboxylic acid

Sitafloxacin Impurity 1

8-chloro-6,7-difluoro-1-((1S,2R)-2-fluorocyclopropyl)-4-oxo-1,4-dihydroquinoline-3-carboxylic acid

Sitafloxacin Impurity 2

8-chloro-6,7-difluoro-1-((1R,2R)-2-fluorocyclopropyl)-4-oxo-1,4-dihydroquinoline-3-carboxylic acid

Sitafloxacin Impurity 3

8-chloro-6,7-difluoro-1-((1S,2S)-2-fluorocyclopropyl)-4-oxo-1,4-dihydroquinoline-3-carboxylic acid

Sitafloxacin Impurity 4

7-((S)-7-amino-5-azaspiro[2.4]heptan-5-yl)-8-chloro-6-fluoro-1-((1S,2R)-2-fluorocyclopropyl)-4-oxo-1,4-dihydroquinoline-3-carboxylic acid

Sitafloxacin Impurity 5

7-((R)-7-amino-5-azaspiro[2.4]heptan-5-yl)-8-chloro-6-fluoro-1-((1S,2R)-2-fluorocyclopropyl)-4-oxo-1,4-dihydroquinoline-3-carboxylic acid

Sitafloxacin Impurity 6

7-((R)-7-amino-5-azaspiro[2.4]heptan-5-yl)-8-chloro-6-fluoro-1-((1R,2R)-2-fluorocyclopropyl)-4-oxo-1,4-dihydroquinoline-3-carboxylic acid

Sitafloxacin Impurity 7

7-((S)-7-amino-5-azaspiro[2.4]heptan-5-yl)-8-chloro-6-fluoro-1-((1S,2S)-2-fluorocyclopropyl)-4-oxo-1,4-dihydroquinoline-3-carboxylic acid

Sitafloxacin Impurity 8

7-((R)-7-amino-5-azaspiro[2.4]heptan-5-yl)-8-chloro-6-fluoro-1-((1S,2S)-2-fluorocyclopropyl)-4-oxo-1,4-dihydroquinoline-3-carboxylic acid

Sitafloxacin Impurity 9

7-((S)-7-amino-5-azaspiro[2.4]heptan-5-yl)-8-chloro-6-fluoro-1-((1R,2R)-2-fluorocyclopropyl)-4-oxo-1,4-dihydroquinoline-3-carboxylic acid

Sitafloxacin Impurity 10

7-((R)-7-amino-5-azaspiro[2.4]heptan-5-yl)-8-chloro-6-fluoro-1-((1R,2S)-2-fluorocyclopropyl)-4-oxo-1,4-dihydroquinoline-3-carboxylic acid

Sitafloxacin Impurity 11

7-(7-amino-5-azaspiro[2.4]heptan-5-yl)-6-fluoro-4-oxo-1,4-dihydroquinoline-3-carboxylic acid