API Impurities
RIFAXIMIN 11-DESMETHYL IMPURITY
Chemical Name: 4-Deoxy-pyridol[1',2'-1,2]imid...
CAS No:
1316302-12-1
Molecular Formula: C42H49N3O11
Molecular Weight: 771.85
CAT No:
ALL-RIF-1949
Keywords: SMILES string - O=C1C(C2=C3C(O)=C(NC(/C(...
Inventory Status:IN STOCK
RIFAXIMIN DESACETYL IMPURITY
Chemical Name: 5,6,21,23,25-Pentahydroxy-27-methoxy-2,4...
CAS No:
80621-88-1
Molecular Formula: C41H49N3O10
Molecular Weight: 743.84
CAT No:
ALL-RIF-1950
Keywords: SMILES string - O=C1C(C2=C3C(O)=C(NC(/C(...
Inventory Status:IN STOCK-391-71
RIFAXIMIN EP IMPURITY A
Chemical Name: 4-Methylpyridin-2-amine
CAS No:
695-34-1
Molecular Formula: C6H8N2
Molecular Weight: 108.14
CAT No:
ALL-RIF-1951
Keywords: SMILES string - NC1=NC=CC(C)=C1
Inventory Status:IN STOCK-392-71
RIFAXIMIN EP IMPURITY B
Chemical Name: 4-O-Carboxymethyl Rifamycin ;[(1,2-Dihyd...
CAS No:
13929-35-6
Molecular Formula: C39H49NO14
Molecular Weight: 755.8
CAT No:
ALL-RIF-B
Keywords: SMILES string - [H][C@@](OC(C)=O)([C@@H]...
Inventory Status:IN STOCK-393-71
RIFAXIMIN EP IMPURITY C
Chemical Name: 5,6,9,17,19,21-Hexahydroxy-23-methoxy-2,...
CAS No:
6998-60-3 (base) ; 14897-39-3 (Na salt)
Molecular Formula: C37H46NNaO12
Molecular Weight: 719.75
CAT No:
ALL-RIF-1953
Keywords: SMILES string - CC1=C(O2)C3=C4C(C(O)=C(N...
Inventory Status:IN STOCK-394-71
RIFAXIMIN EP IMPURITY D
Chemical Name: (2S,16Z,18E,20R,21S,22R,23R,24R,25S,26R,...
CAS No:
NA
Molecular Formula: C43H49N3O12
Molecular Weight: 799.86
CAT No:
ALL-R06943
Keywords: SMILES string - CC1=CC2=NC3=C(C(NC(/C(C)...
Inventory Status:UNDER DEVELOPMENT
RIFAXIMIN EP IMPURITY D & H
Chemical Name: (2S,16Z,18E,20R,21S,22R,23R,24R,25S,26R,...
CAS No:
N.A
Molecular Formula: C43H49N3O12 + C43H51N3O12
Molecular Weight: 799.86 + 801.88
CAT No:
ALL-R07090
Keywords: SMILES string - CC1=CC2=NC3=C(C(NC(/C(C)...
Inventory Status:IN STOCK
RIFAXIMIN EP IMPURITY E
Chemical Name: 1,4-Dideoxy-1,4-dihydro-1,4-dioxo-rifamy...
CAS No:
13553-79-2
Molecular Formula: C37H45NO12
Molecular Weight: 695.75
CAT No:
ALL-RIF-1955
Keywords: SMILES string - O=C1C2=C(C(C=C3NC(/C(C)=...
Inventory Status:IN STOCK-395-71
RIFAXIMIN EP IMPURITY F
Chemical Name: 4-O-(Carboxymethyl)-1-deoxy-1,4-dihydro-...
CAS No:
14487-05-9
Molecular Formula: C39H47NO14
Molecular Weight: 753.79
CAT No:
ALL-RIF-1956
Keywords: SMILES string - O=C1C(C(C(OC2=O)(OC2)C=C...
Inventory Status:IN STOCK-396-71
RIFAXIMIN EP IMPURITY G
Chemical Name: (2S,7Z,16Z,18E,20S,21S,22R,23R,24R,25S,2...
CAS No:
80621-76-7
Molecular Formula: C43H49N3O11
Molecular Weight: 783.86
CAT No:
ALL-RIF-G
Keywords: SMILES string - O=C1C(C(C2=C(/C3=N/C(/C(...
Inventory Status:IN STOCK-397-71
RIFAXIMIN EP IMPURITY H
Chemical Name: (2S,16Z,18E,20S,21S,22R,23R,24R,25S,26R,...
CAS No:
1210022-90-4
Molecular Formula: C43H51N3O12
Molecular Weight: 801.88
CAT No:
ALL-R06792
Keywords: SMILES string - CC1=CC2=NC3=C(C(N4)=C(O)...
Inventory Status:UNDER DEVELOPMENT
RIFAXIMIN IMPURITY 1
Chemical Name: (2S,16Z,18E,20S,21S,22R,23R,24R,25S,26R,...
CAS No:
1351775-04-6
Molecular Formula: C43H49N3O11
Molecular Weight: 783-86
CAT No:
ALL-R04478
Keywords: SMILES string - O=C([C@](O1)(O/C=C/[C@@H...
Inventory Status:IN STOCK-398-71
RIFAXIMIN IMPURITY 2
Chemical Name: (2S,16Z,18E,20S,21S,22R,23R,24R,25S,26R,...
CAS No:
1351775-03-5
Molecular Formula: C43H49N3O11
Molecular Weight: 783-86
CAT No:
ALL-R04404
Keywords: SMILES string - O=C1C(C(C(C(N2C=C3)=C4NC...
Inventory Status:IN STOCK-399-71