Chemical identity

Caspofungin C0 Impurity

CAS 251095-73-5 · C52H88N10O15

01Identity

Identifiers and names for this exact compound. Empty fields are left unassigned.

Lazychem IDLC-09630
PubChem CID138454313
NameCaspofungin C0 Impurity
CAS RN251095-73-5
Molecular formulaC52H88N10O15
Molecular weight1093.31 g/mol
IUPAC nameN-((2R,6S,9S,11R,12S,14aS,16R,20S,23S,25aS)-20-((R)-3-amino-1-hydroxypropyl)-12-((2-aminoethyl)amino)-23-((1S,2S)-1,2-dihydroxy-2-(4-hydroxyphenyl)ethyl)-2,11,16-trihydroxy-6-((R)-1-hydroxyethyl)-5,8,14,19,22,25-hexaoxotetracosahydro-1H-dipyrrolo[2,1-c:2',1'-l][1,4,7,10,13,16]hexaazacyclohenicosin-9-yl)-10,12-dimethyltetradecanamide
InChIKeyXQTOEGVAOWZIFC-PATHUKAMSA-N

02Structure identifiers

2D structurePubChem CID 138454313
Two-dimensional chemical structure of Caspofungin C0 Impurity, CAS 251095-73-5
Two-dimensional structure for the PubChem identity linked to this record. Confirm the identifiers before analytical use.

The parsed structure contains 4 rings, includes aromatic atoms, includes aliphatic carbon, has 14 defined stereocentres. These statements are calculated from the published structure string.

Defined stereocentres14
Unassigned stereocentres2
Ring count4
Secondary amines1
Tertiary amines0
N-methyl amine sites0
SMILESCCC(C)CC(C)CCCCCCCCC(=O)N[C@H]1C[C@H]([C@H](NC(=O)[C@@H]2C[C@H](CN2C(=O)[C@@H](NC(=O)[C@@H](NC(=O)[C@@H]3C[C@H](CN3C(=O)[C@@H](NC1=O)[C@@H](C)O)O)[C@@H]([C@H](C4=CC=C(C=C4)O)O)O)[C@@H](CCN)O)O)NCCN)O
InChINot listed
Formula from structureC52H88N10O15
Molecular weight from structure1093.31 g/mol

03Stereochemistry

The published structure contains 14 defined and 2 unassigned tetrahedral stereocentres. The exact wedge and dash depiction is shown above.

Defined centres14Structure assigned
Unassigned centres2Structure unspecified
Assignment statusPartially assignedExact published identity
Tetrahedral upper bound≤ 65,536Before symmetry reduction

Published same-connectivity configurations

2 records

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.

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.

04Possible N-nitroso structures

Shown for structural screening only. These candidates are not confirmed impurities, formation predictions or analytical findings.

Matched amine site1 candidate
Chemical structure of Caspofungin C0 Impurity with the matched amine site highlighted in amber
Amber identifies the screened atom and adjacent bonds.
Possible structure candidateUnverified identity
First calculated possible N-nitroso structure derived from Caspofungin C0 Impurity, with the new N-nitroso group highlighted in amber
The new N-N=O atoms and bonds are highlighted. No CAS number or compound name is assigned by this calculation.
Candidate 1Possible N-nitroso structural candidate
Calculated formula
C52H87N11O16
Candidate SMILES
CCC(C)CC(C)CCCCCCCCC(=O)N[C@H]1C[C@@H](O)[C@@H](N(CCN)N=O)NC(=O)[C@@H]2C[C@@H](O)CN2C(=O)[C@H]([C@H](O)CCN)NC(=O)[C@H]([C@H](O)[C@@H](O)c2ccc(O)cc2)NC(=O)[C@@H]2C[C@@H](O)CN2C(=O)[C@H]([C@@H](C)O)NC1=O

Interpretation: A structural alert alone does not establish that a nitrosamine forms. Evaluate nitrite sources, amine reagents, pH, temperature, process sequence, purge and analytical evidence.

05India status for this compound

These results apply only to this exact compound name and CAS number. Confirm the current official instruments before making a regulatory decision.

NDPS / RCSNO EXACT MATCH FOUNDCAS 251095-73-5 has no exact match in the reviewed published schedule.
SCOMETNO EXACT REVIEWED CAS MATCHCAS 251095-73-5 has no exact match in the reviewed SCOMET list.
Review date2026-08-01Recheck the current official instruments for the material, concentration, activity and date in question.

06Names and relationships

Associated parent compound

Caspofungin

View API and impurity family

Other names

No synonyms are listed.

Related records from the same parent family

07Documented history

Dated discovery, occurrence, use and issue claims are published only when a suitable primary or government source is available.

No dated history available

No verified discovery, first report, occurrence, use or issue event is currently available for this identity.

08Sources