API and parent drug

Abamectin

CAS 71751-41-2 · C95H142O28 · 2 related records

01API identity and structure

2D structurePubChem CID 9920327
Two-dimensional chemical structure of Abamectin, CAS 71751-41-2
Two-dimensional structure for the PubChem identity linked to this record. Confirm the identifiers before analytical use.

The parsed structure contains 14 rings, includes aliphatic carbon, has 39 defined stereocentres. These statements are calculated from the published structure string.

API / medicine nameAbamectin
CAS RN71751-41-2
PubChem CID9920327
Molecular formulaC95H142O28
Molecular weight1732.1 g/mol
IUPAC name(1'R,2R,3S,4'S,6S,8'R,10'E,12'S,13'S,14'E,16'E,20'R,21'R,24'S)-2-[(2S)-butan-2-yl]-21',24'-dihydroxy-12'-[(2R,4S,5S,6S)-5-[(2S,4S,5S,6S)-5-hydroxy-4-methoxy-6-methyloxan-2-yl]oxy-4-methoxy-6-methyloxan-2-yl]oxy-3,11',13',22'-tetramethylspiro[2,3-dihydropyran-6,6'-3,7,19-trioxatetracyclo[15.6.1.14,8.020,24]pentacosa-10,14,16,22-tetraene]-2'-one;(1'R,2R,3S,4'S,6S,8'R,10'E,12'S,13'S,14'E,16'E,20'R,21'R,24'S)-21',24'-dihydroxy-12'-[(2R,4S,5S,6S)-5-[(2S,4S,5S,6S)-5-hydroxy-4-methoxy-6-methyloxan-2-yl]oxy-4-methoxy-6-methyloxan-2-yl]oxy-3,11',13',22'-tetramethyl-2-propan-2-ylspiro[2,3-dihydropyran-6,6'-3,7,19-trioxatetracyclo[15.6.1.14,8.020,24]pentacosa-10,14,16,22-tetraene]-2'-one
Defined stereocentres39
Unassigned stereocentres0
SMILESCC[C@H](C)[C@@H]1[C@H](C=C[C@@]2(O1)C[C@@H]3C[C@H](O2)C/C=C(/[C@H]([C@H](/C=C/C=C/4\CO[C@H]5[C@@]4([C@@H](C=C([C@H]5O)C)C(=O)O3)O)C)O[C@H]6C[C@@H]([C@H]([C@@H](O6)C)O[C@H]7C[C@@H]([C@H]([C@@H](O7)C)O)OC)OC)\C)C.C[C@H]1/C=C/C=C/2\CO[C@H]3[C@@]2([C@@H](C=C([C@H]3O)C)C(=O)O[C@H]4C[C@@H](C/C=C(/[C@H]1O[C@H]5C[C@@H]([C@H]([C@@H](O5)C)O[C@H]6C[C@@H]([C@H]([C@@H](O6)C)O)OC)OC)\C)O[C@]7(C4)C=C[C@@H]([C@H](O7)C(C)C)C)O
InChINot listed
InChIKeyIBSREHMXUMOFBB-JFUDTMANSA-N

02Stereochemistry

The published structure contains 39 defined and 0 unassigned tetrahedral stereocentres. The exact wedge and dash depiction is shown above.

Defined centres39Structure assigned
Unassigned centres0Structure unspecified
Assignment statusFully assignedExact published identity
Tetrahedral upper bound2^39Before 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

This is a structure-only screen for the API. It does not predict manufacturing conditions, nitrite exposure, reaction kinetics or analytical results.

N-nitroso groupNot detected

Direct N-nitroso substructure search.

Secondary amineNot detected

A detected secondary amine is a structural alert that requires process-specific assessment.

Tertiary N-methyl amineNot detected

N-dealkylation can be relevant to impurity pathway assessment. A methyl group elsewhere in the molecule is not treated as a nitrosamine alert.

Interpretation: Formation potential cannot be concluded from structure alone. Review the synthesis, recovered solvents, amine reagents, nitrite sources, pH, temperature and purge controls.

04India status for this compound

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

NDPS / RCSNO EXACT MATCH FOUNDNo exact match for this compound is present in the reviewed record. Confirm against the current official schedule before making a regulatory decision.
SCOMETNO EXACT CAS MATCH FOUNDCAS 71751-41-2 does not have an exact match in the reviewed SCOMET entries.
Review date2026-08-01Check the current official instruments for the material, activity and date in question.

06Sources

  • S01
    PubChem compound record, CID 9920327

    Structure, identifiers and machine-readable properties for the API identity.

  • S02
    NCBI website and molecular data policies

    Reuse policy for NCBI molecular data. Vendor descriptions and contributed narrative text are not reproduced.

  • S03
    Lazychem chemical records

    Parent-family links are exact normalized matches to the supplied parent field. Structural alerts are calculated from the published API structure.