Chemical identity

L-Dehydro Ascorbic Acid

CAS 490-83-5 · C6H6O6

01Identity

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

Lazychem IDLC-17934
PubChem CID440667
NameL-Dehydro Ascorbic Acid
CAS RN490-83-5
Molecular formulaC6H6O6
Molecular weight174.11 g/mol
IUPAC name(R)-5-((S)-1,2-Dihydroxyethyl)furan-2,3,4(5H)-trione
InChIKeySBJKKFFYIZUCET-JLAZNSOCSA-N

02Structure identifiers

2D structurePubChem CID 440667
2D structure: L-Dehydro Ascorbic Acid, CAS 490-83-5
Structure of L-Dehydro Ascorbic Acid (CAS 490-83-5). LazyChem record. Source identity: PubChem CID 440667. Confirm the identifiers before analytical use.Download structure image

Structure facts for this exact identity.

Molecular formulaC6H6O6
InChIKeySBJKKFFYIZUCET-JLAZNSOCSA-N
Ring count1
Defined stereocentres2
Unassigned stereocentres0
SMILESC([C@@H]([C@@H]1C(=O)C(=O)C(=O)O1)O)O
InChIInChI=1S/C6H6O6/c7-1-2(8)5-3(9)4(10)6(11)12-5/h2,5,7-8H,1H2/t2-,5+/m0/s1

03Stereochemistry

The published structure contains 2 defined and 0 unassigned tetrahedral stereocentres. The exact wedge-and-dash depiction is shown above.

Defined stereocentres22D structure
Unassigned stereocentres02D structure
Assignment statusFully assignedExact published identity
Tetrahedral upper bound≤ 4Before 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.

04India 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 490-83-5 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 490-83-5 was not found in the reviewed exact-CAS mapping. Generic and analogue entries were not evaluated.

05Names and relationships

Associated parent compound

Ascorbic Acid

View API and impurity family

Other names

  • DEHYDROASCORBIC ACID
  • L-Dehydroascorbic acid
  • dehydroascorbate
  • Dehydro-L-ascorbic acid
  • L-Threo-hexo-2, 3-diulosono-1, 4-lactone
  • (5R)-5-[(1S)-1, 2-dihydroxyethyl]oxolane-2, 3, 4-trione
  • L-threo-2, 3-Hexodiulosonic acid
  • gamma-lactone, BIS-DEHYDRO-L-ASCORBIC ACID
  • L-threo-2, 3-Hexodiulosonic acid gamma-lactone
  • DHAA

Related records from the same parent family

06Documented 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.

07Sources