Chemical identity

D-(+)-Lactose Monohydrate

CAS 64044-51-5 · C12H22O11·H2O

01Identity

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

Lazychem IDLC-11683
PubChem CID440995
NameD-(+)-Lactose Monohydrate
CAS RN64044-51-5
Molecular formulaC12H22O11·H2O
Molecular weight360.32 g/mol
IUPAC name(3R,4R,5S,6R)-6-(hydroxymethyl)-5-(((2S,3R,4S,5R,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)tetrahydro-2H-pyran-2-yl)oxy)tetrahydro-2H-pyran-2,3,4-triol Hydrate
InChIKeyGUBGYTABKSRVRQ-QKKXKWKRSA-N

02Structure identifiers

2D structurePubChem CID 440995
Two-dimensional chemical structure of D-(+)-Lactose Monohydrate, CAS 64044-51-5
Two-dimensional structure for the PubChem identity linked to this record. Confirm the identifiers before analytical use.

The parsed structure contains 2 rings, includes aliphatic carbon, has 9 defined stereocentres. These statements are calculated from the published structure string.

Defined stereocentres9
Unassigned stereocentres1
Ring count2
Secondary amines0
Tertiary amines0
N-methyl amine sites0
SMILESC([C@@H]1[C@@H]([C@@H]([C@H]([C@@H](O1)O[C@@H]2[C@H](OC([C@@H]([C@H]2O)O)O)CO)O)O)O)O
InChINot listed
Formula from structureC12H22O11
Molecular weight from structure342.30 g/mol

03Stereochemistry

The published structure contains 9 defined and 1 unassigned tetrahedral stereocentres. The exact wedge and dash depiction is shown above.

Defined centres9Structure assigned
Unassigned centres1Structure unspecified
Assignment statusPartially assignedExact published identity
Tetrahedral upper bound≤ 1,024Before 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.

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 / RCSNO EXACT MATCH FOUNDCAS 64044-51-5 has no exact match in the reviewed published schedule.
SCOMETNO EXACT REVIEWED CAS MATCHCAS 64044-51-5 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.

05Names and relationships

Associated parent compound

Chemical; Lactose

View associated product family

Other names

  • (+)-Lactose
  • Lactose monohydrate CRS (Y0001750)
  • alpha-D-Lactose monohydrate
  • 4-O-beta-D-Galactopyranosyl-alpha-D-glucose
  • CHEBI:17716
  • beta-D-Gal-(1->4)-D-Glc
  • beta-D-Galp-(1->4)-D-Glcp
  • 1-beta-D-Galactopyranosyl-4-D-glucopyranose
  • beta-D-galactopyranosyl-(1->4)-D-glucopyranose
  • Lactin
  • Anhydrous lactose
  • Lactose anhydrous

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