Chemical identity

N-Desmethyl Doxycycline

CAS 86271-83-2 · C21H22N2O8

01Identity

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

Lazychem IDLC-21171
PubChem CID54692977
NameN-Desmethyl Doxycycline
CAS RN86271-83-2
Molecular formulaC21H22N2O8
Molecular weight430.41 g/mol
IUPAC name[4S-(4α,4aα,5α,5aα,6α,12aα)]-1,4,4a,5,5a,6,11,12a-Octahydro-3,5,10,12,12a-pentahydroxy-6-methyl-4-(methylamino)-1,11-dioxo-2-naphthacenecarboxamide
InChIKeyRNNLTLVVHHDBRY-BTGWETQASA-N

02Structure identifiers

2D structurePubChem CID 54692977
2D structure: N-Desmethyl Doxycycline, CAS 86271-83-2
Structure of N-Desmethyl Doxycycline (CAS 86271-83-2). LazyChem record. Source identity: PubChem CID 54692977. Confirm the identifiers before analytical use.Download structure image

Structure facts for this exact identity.

Molecular formulaC21H22N2O8
InChIKeyRNNLTLVVHHDBRY-BTGWETQASA-N
Ring count4
Defined stereocentres6
Unassigned stereocentres0
SMILESC[C@@H]1[C@H]2[C@@H]([C@H]3[C@@H](C(=O)C(=C([C@]3(C(=O)C2=C(C4=C1C=CC=C4O)O)O)O)C(=O)N)NC)O
InChIInChI=1S/C21H22N2O8/c1-6-7-4-3-5-8(24)10(7)15(25)11-9(6)16(26)13-14(23-2)17(27)12(20(22)30)19(29)21(13,31)18(11)28/h3-6,9,13-14,16,23-26,29,31H,1-2H3,(H2,22,30)/t6-,9+,13+,14-,16-,21-/m0/s1

03Stereochemistry

The published structure contains 6 defined and 0 unassigned tetrahedral stereocentres. The exact wedge-and-dash depiction is shown above.

Defined stereocentres62D structure
Unassigned stereocentres02D structure
Assignment statusFully assignedExact published identity
Tetrahedral upper bound≤ 64Before 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.

04Possible N-nitroso structures

A record-level structural review indicates a possible N-nitroso candidate. This is not a confirmed impurity, formation prediction or analytical finding.

Possible structure candidateUnconfirmed identity
Possible N-nitroso structural candidate related to N-Desmethyl Doxycycline, CAS 86271-83-2
No CAS number, formation claim or analytical confirmation is assigned.

A structural result alone does not establish that a nitrosamine forms. A process-specific and analytical assessment is required.

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 / RCSNOT FOUND IN REVIEWED ENTRIESCAS 86271-83-2 was not found in the reviewed exact-identity entries. Generic, class, analogue, salt and isomer provisions were not evaluated.
SCOMETNOT FOUND IN REVIEWED CAS ENTRIESCAS 86271-83-2 was not found in the reviewed exact-CAS mapping. Generic and analogue entries were not evaluated.

06Names and relationships

Associated parent compound

Doxycycline

View API and impurity family

Other names

  • (2Z,4S,4aR,5S,5aR,6R,12aS)-2-(amino-hydroxy-methylidene)-5,10,11,12a-tetrahydroxy-6-methyl-4-methylamino-4a,5,5a,6-tetrahydro-4H-tetracene-1,3,12-trione
  • (4S,4aR,5S,5aR,6R,12aR)-1,5,10,11,12a-pentahydroxy-6-methyl-4-(methylamino)-3,12-dioxo-4a,5,5a,6-tetrahydro-4H-tetracene-2-carboxamide
  • [4S-(4alpha,4aalpha,5alpha,5aalpha,6alpha,12aalpha)]-1,4,4a,5,5a,6,11,12a-Octahydro-3,5,10,12,12a-pentahydroxy-6-methyl-4-(methylamino)-1,11-dioxo-2-naphthacenecarboxamide
  • Doxycycline Hyclate Impurity 10
  • 2-Naphthacenecarboxamide, 1,4,4a,5,5a,6,11,12a-octahydro-3,5,10,12,12a-pentahydroxy-6-methyl-4-(methylamino)-1,11-dioxo-, (4S-(4alpha,4aalpha,5alpha,5aalpha,6alpha,12aalpha))-
  • (2Z,4S,4aR,5S,5aR,6R,12aS)-2-[amino(hydroxy)methylene]-5,10,11,12a-tetrahydroxy-6-methyl-4-(methylamino)-4a,5,5a,6-tetrahydro-4H-tetracene-1,3,12-trione
  • (4S,4aR,5S,5aR,6R,12aS)-3,5,10,12,12a-pentahydroxy-6-methyl-4-(methylamino)-1,11-dioxo-1,4,4a,5,5a,6,11,12a-octahydrotetracene-2-carboxamide

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