Rifamycin S

利福霉素S

Also known as: Rifamycin S, Rifampicin S, 1,4-Dideoxy-1,4-dihydro-1,4-dioxorifamycin, 2,7-(Epoxypentadeca[1,11,13]trienimino)naphtho[2,1-b]furan-1,6,9,11(2H)-tetrone, 5,17,19,21-tetrahydroxy-23-methoxy-2,4,12,16,18,20,22-heptamethyl-, 21-acetate, (2S,12Z,14E,16S,17S,18R,19R,20R,21S,22R,23S,24E)-5,17,19-trihydroxy-23-methoxy-2,4,12,16,18,20,22-heptamethyl-1,6,9,11-tetraoxo-1,2,6,9-tetrahydro-2,7-(epoxypentadeca[1,11,13]trienoimino)naphtho[2,1-b]furan-21-yl acetate, NSC 144130, UNII-PI53N820JV, Rifomycin S, Rifaximin EP Impurity E (Rifamycin S), Rifamycin EP Impurity B

Rifamycin S (CAS 13553-79-2) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C37H45NO12 and a molecular weight of 695.753 g/mol. It is also known as Rifampicin S, 1,4-Dideoxy-1,4-dihydro-1,4-dioxorifamycin and 2,7-(Epoxypentadeca[1,11,13]trienimino)naphtho[2,1-b]furan-1,6,9,11(2H)-tetrone, 5,17,19,21-tetrahydroxy-23-methoxy-2,4,12,16,18,20,22-heptamethyl-, 21-acetate. Key properties include a melting point of 179-181ºC (dec.), a boiling point of 917.4±65.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 508.6±34.3 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

13553-79-2

Jingsj CID

J-1993219-4

Molecular Formula

C₃₇H₄₅NO₁₂

Chinese Name

利福霉素S

Molecular Weight

695.753 g/mol

Category

Organic Compounds

Last updated

8/21/2026