Products 63-42-3

CAS 63-42-3 appears in our catalog under these names: Lactose, 98%, Lactose (Mixture of alpha and beta Isomers), D-Lactose Anhydrous, >95% (HPLC), D-Lactose, >95% (HPLC), D-Lactose. Offered by: Combi-blocks, Chemat Brand, TRC, Dr. Ehrenstorfer, TargetMol. Available pack sizes: 5g, 100g, 500g, 1kg, 25g, on request, 50g, 250mg.

Lactose, 98%
Combi-blocks, Fluorochem
  • size: 5g, 100g, 500g, 1kg
  • Variants: 8
from 102.07
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Lactose (Mixture of alpha and beta Isomers)
Chemat Brand
  • size: on request
  • Variants: 1
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D-Lactose Anhydrous, >95% (HPLC)
TRC
  • size: 25g, 5g
  • Variants: 2
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D-Lactose, >95% (HPLC)
TRC
  • size: 50g
  • Variants: 1
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D-Lactose
Dr. Ehrenstorfer, HPC Standards
  • size: 250mg, 1x250mg
  • Variants: 2
from 201.14
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D-Lactose 1000 µg/mL in Water
Dr. Ehrenstorfer
  • size: 1ml
  • Variants: 1
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Lactose/ 99.17% (existing batch purity)
TargetMol
  • size: 1g, 500mg
  • Variants: 2
from 458.82
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Lactose - anhydrous
Biosynth
  • size: 2kg, 1kg, 5kg, 10kg
  • Variants: 5
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Lactose, anhydrous, 99.00%
Chemat
  • size: 100g, 1kg, 250g, 5kg
  • Variants: 4
from 150.79
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Lactose, anhydrous, Ph. Eur., USP grade, 99.50%
Chemat
  • size: 1kg
  • Variants: 1
from 653.23
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LACTOSE (ANHYDROUS)
Sigma-Aldrich
  • size: 1EA
  • Variants: 1
from 850.50
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LACTOSE, TESTED ACCORDING TO PH.EUR.
Sigma-Aldrich
  • size: 1KG
  • Variants: 1
from 922.00
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Lactose, 98.0%
MedChemExpress
  • size: 500 mg, 10mM/1mL, 1 g
  • Variants: 3
from 361.49
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Lactose (Standard), 99.90%
MedChemExpress
  • size: 50 mg, 100 mg, 10 mg, 25 mg
  • Variants: 4
from 240.74
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Structural formula: {0} (CAS {1})

Lactose is a glycosylglucose disaccharide, found most notably in milk, that consists of D-galactose and D-glucose fragments bonded through a beta-14 glycosidic linkage. The glucose fragment can be in either the alpha- or beta-pyranose form, whereas the galactose fragment can only have the beta-pyranose form. It has a role as a human metabolite.

Source: ChEBI

Identity
Molecular formulaC12H22O11
Molecular weight342.30 g/mol
IUPAC name(2R,3R,4S,5R,6S)-2-(hydroxymethyl)-6-[(2R,3S,4R,5R)-4,5,6-trihydroxy-2-(hydroxymethyl)oxan-3-yl]oxyoxane-3,4,5-triol
InChIKeyGUBGYTABKSRVRQ-QKKXKWKRSA-N
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

Computed by PubChem (NCBI)

Synonyms: 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, Aletobiose, Galactinum, Tablettose
Related forms of this compound
(2R,3S,4S,5R,6R)-2-(hydroxymethyl)-6-[(2R,3S,4R,5R,6R)-4,5,6-trihydroxy-2-(hydroxymethyl)oxan-3-yl]oxyoxane-3,4,5-triol C12H22O11
(2R,3S,4S,5S,6R)-2-(hydroxymethyl)-6-[(2R,3S,4R,5S)-4,5,6-trihydroxy-2-(hydroxymethyl)oxan-3-yl]oxyoxane-3,4,5-triol C12H22O11
(2R,3S,4S,5S,6S)-2-(hydroxymethyl)-6-[(2R,3S,4R,5S)-4,5,6-trihydroxy-2-(hydroxymethyl)oxan-3-yl]oxyoxane-3,4,5-triol C12H22O11
(2R,3R,4S,5R,6S)-2-(hydroxymethyl)-6-[(2R,3S,4R,5R,6R)-4,5,6-trihydroxy-2-(hydroxymethyl)oxan-3-yl]oxyoxane-3,4,5-triol C12H22O11
(2R,3S,4S,5R,6R)-2-(hydroxymethyl)-6-[(2R,3S,4R,5R,6S)-4,5,6-trihydroxy-2-(hydroxymethyl)oxan-3-yl]oxyoxane-3,4,5-triol C12H22O11
(2R,3R,4S,5R,6R)-2-(hydroxymethyl)-6-[(2R,3R,4R,5R)-4,5,6-trihydroxy-2-(hydroxymethyl)oxan-3-yl]oxyoxane-3,4,5-triol C12H22O11
(2R,3R,4S,5R,6S)-2-(hydroxymethyl)-6-[(2R,3S,4R,5R,6S)-4,5,6-trihydroxy-2-(hydroxymethyl)oxan-3-yl]oxyoxane-3,4,5-triol C12H22O11
Isomers (same molecular formula)
2-(hydroxymethyl)-6-[3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxyoxane-3,4,5-triol C12H22O11
(2S,3R,4S,5R,6R)-2-[(2R,3S,4S,5R)-4,5-dihydroxy-2,5-bis(hydroxymethyl)oxolan-3-yl]oxy-6-(hydroxymethyl)oxane-3,4,5-triol C12H22O11
(3S,4S,5R,6R)-6-(hydroxymethyl)-4-[(2R,3S,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxyoxane-2,3,5-triol C12H22O11
(3R,4S,5R,6R)-6-(hydroxymethyl)-4-[(2R,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxyoxane-2,3,5-triol C12H22O11
(2R,3S,4S,5R)-2,4,5,6-tetrahydroxy-3-[(2R,3R,4S,5R,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxyhexanal C12H22O11