API and parent drug

Rifaximin

CAS 80621-81-4 · C43H51N3O11 · 8 related records

01API identity and structure

2D structurePubChem CID 6436173
2D structure: Rifaximin, CAS 80621-81-4
Structure of Rifaximin (CAS 80621-81-4). LazyChem record. Source identity: PubChem CID 6436173. Confirm the identifiers before analytical use.Download structure image
API / medicine nameRifaximin
CAS RN80621-81-4
PubChem CID6436173
Molecular formulaC43H51N3O11
Molecular weight785.9 g/mol
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
Defined stereocentres9
Unassigned stereocentres0
SMILESC[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
InChINot listed
InChIKeyNZCRJKRKKOLAOJ-XRCRFVBUSA-N

02Stereochemistry

The published structure contains 9 defined and 0 unassigned tetrahedral stereocentres. The exact wedge-and-dash depiction is shown above.

Defined stereocentres92D structure
Unassigned stereocentres02D structure
Assignment statusFully assignedExact published identity
Tetrahedral upper bound≤ 512Before symmetry reduction

Published same-connectivity configurations

1 record

These records have the same connectivity, molecular formula and protonation layer, but a different complete InChIKey stereochemical layer. Only separately structure-linked records are shown.

No additional structure-linked configuration with the same connectivity is currently present in the LazyChem dataset.

Scope: The mathematical 2^n value is only an upper bound. Symmetry and other stereogenic elements can change the number of distinct stereoisomers. A hypothetical configuration is not published as a compound record without a verified structure identity.

03Structural nitrosamine screen

Record-level resultNo candidate is published

No record-level structural candidate is currently published for this identity.

This result does not predict manufacturing conditions, formation, analytical findings or absence of risk. A process-specific assessment is required.

04India status for this compound

The result below applies only to this exact compound identity and CAS number.

NDPS / RCSNOT FOUND IN REVIEWED ENTRIESNo exact reviewed identity entry was found. Generic, class, analogue, salt and isomer provisions were not evaluated. Confirm the current official schedule before a regulatory decision.
SCOMETNOT FOUND IN REVIEWED CAS ENTRIESCAS 80621-81-4 was not found in the reviewed exact-CAS mapping. Generic and analogue entries were not evaluated.

06Sources