Sitafloxacin isomer I (SSR)

7-[(7S)-7-氨基-5-氮杂螺[2.4]庚烷-5-基]-8-氯-6-氟-1-[(1S,2R)-2-氟环丙基]-1,4-二氢-4-氧代-3-喹啉甲酸

Also known as: 7-[(7S)-7-amino-5-azaspiro[2.4]hept-5-yl]-8-chloro-6-fluoro-1-[(1S,2R)-2-fluorocyclopropyl]-1,4-dihydro-4-oxo-3-quinolinecarboxylic acid, Sitafloxacin isomer I (SSR), Sitafloxacin Isomer Impurity 1, SitafloxacinisomerⅠ(SSR), sitafloxacin isomer I(SSR), 7-((S)-7-amino-5-azaspiro[2.4]hept-5-yl)-8-chloro-6-fluoro-1-((1S,2R)-2-fluorocyclopropyl)-4-oxo-1,4-dihydroquinoline-3-carboxylic acid

Sitafloxacin isomer I (SSR) (CAS 127254-11-9) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C19H18ClF2N3O3 and a molecular weight of 409.814 g/mol. It is also known as 7-[(7S)-7-amino-5-azaspiro[2.4]hept-5-yl]-8-chloro-6-fluoro-1-[(1S,2R)-2-fluorocyclopropyl]-1,4-dihydro-4-oxo-3-quinolinecarboxylic acid, Sitafloxacin Isomer Impurity 1 and SitafloxacinisomerⅠ(SSR). Key properties include a boiling point of 629.2±55.0 °C at 760 mmHg, a density of 1.6±0.1 g/cm3 and a flash point of 334.3±31.5 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

127254-11-9

Jingsj CID

J-1002891-1

Molecular Formula

C₁₉H₁₈ClF₂N₃O₃

Chinese Name

7-[(7S)-7-氨基-5-氮杂螺[2.4]庚烷-5-基]-8-氯-6-氟-1-[(1S,2R)-2-氟环丙基]-1,4-二氢-4-氧代-3-喹啉甲酸

Molecular Weight

409.814 g/mol

Category

Pharma Intermediates

Last updated

8/21/2026