C43H51N3O11
785.9 g/mol
APIWarning
Rifaximin
CAS80621-81-4
Category
API
Compound Class
Heterocycle
Primary Use
Pharmaceutical Raw Material
Rifaximin is a compound used as an antibiotic active pharmaceutical ingredient. It is characterized by a complex polycyclic structure containing multiple aromatic rings and heterocycles, with a molecular weight of approximately 785 g/mol and a high topological polar surface area.
Content scope: Information here supports chemical identification and industrial supply, research, and manufacturing contexts. It is not a therapeutic claim, medical advice, or drug-use instructions.
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Related Compounds
ReferenceSame Category
Halquinol
CAS8067-69-4
pharmaceutical raw material
ReferenceSame Category
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CAS8068-28-8
pharmaceutical raw material
ReferenceSame Category
Semax
CAS80714-61-0
pharmaceutical raw material
ReferenceSame Category
Sancycline
CAS808-26-4
pharmaceutical raw material
Referencestereoisomer of
Rifaximin-d6 (Major)
CAS1262992-43-7
pharmaceutical raw material
Safety Reference
Warning
H312Harmful in contact with skin
H332Harmful if inhaled
H335May cause respiratory irritation
H361Suspected of damaging fertility or the unborn child
Customs Tariff Classification
The international HS code for Rifaximin (CAS 80621-81-4) is 2941.90.
HS code (international, 6-digit)
2941.90
EU CN code (8-digit)
2941 90 00
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
Identifiers
IUPAC Name
[(7S,9E,11S,12R,13S,14R,15R,16R,17S,18S,19E,21Z)-2,15,17,36-tetrahydroxy-11-methoxy-3,7,12,14,16,18,22,30-octamethyl-6,23-dioxo-8,37-dioxa-24,27,33-triazahexacyclo[23.10.1.14,7.05,35.026,34.027,32]heptatriaconta-1(35),2,4,9,19,21,25(36),26(34),28,30,32-undecaen-13-yl] acetate
InChIKey
NZCRJKRKKOLAOJ-XRCRFVBUSA-N
SMILES
C[C@H]1/C=C/C=C(\C(=O)NC2=C(C3=C(C4=C(C(=C3O)C)O[C@@](C4=O)(O/C=C/[C@@H]([C@H]([C@H]([C@@H]([C@@H]([C@@H]([C@H]1O)C)O)C)OC(=O)C)C)OC)C)C5=C2N6C=CC(=CC6=N5)C)O)/C
Synonyms (53)
- L-105
- Rifaximin (JAN/USAN/INN)
- 5-yl acetate
- Fatroximin
- Flonorm
- L 105SV
- Lormyx
- Lumenax
- Normix
- RIFAXIMIN [MART.]
- RedActiv
- Rifacol
- Rifamixin
- Rifamycin L 105
- Rifamycin L 105SV
- Rifaxidin
- Rifaximin
- Rifaximin (Standard)
- Rifaximin (Xifaxan)
- Rifaximin CRS
- Rifaximina
- Rifaximina [Spanish]
- Rifaximine
- Rifaximine [French]
- Rifaximinum
- Rifaximinum [Latin]
- Rifaxin
- Ritacol
- Spiraxin
- Targaxan
- Xifaxan
- Xifaxan (TN)
- Xifaxanta
- Xifaxsan
- rifaximinun
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