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CAS 63-42-3

CAS 63-42-3 matches 0 EU annex records across Annex II–VI of Regulation 1223/2009.

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Chemical identity and properties

PubChem 2D chemical structure for CAS 63-42-3
CAS 63-42-3PubChem CID 440995

(+)-Lactose

Lactose is a white hard crystalline powder. (NTP, 1992) — CAMEO Chemicals

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
Molecular formula
C12H22O11
Molecular weight
342.30 g/mol
Exact mass
342.11621151 Da
XLogP3
-4.7
Topological polar surface area
190.0 Ų
Hydrogen-bond donors
8
Hydrogen-bond acceptors
11
Covalent units
1
Defined stereocentres
9

Also known as

CHEBI:17716beta-D-Gal-(1->4)-D-Glcbeta-D-Galp-(1->4)-D-Glcp1-beta-D-Galactopyranosyl-4-D-glucopyranosebeta-D-galactopyranosyl-(1->4)-D-glucopyranoseLactinAnhydrous lactoseLactose anhydrous
16 more reported names
AletobioseGalactinumTablettoseSaccharum lactinFast-floZeparox EPFast-flo LactoseLactose Fast-floPharmatose 21Pharmatose 450MLactin (carbohydrate)Lactosum, anhydrousRefChem:905473GlyTouCan:G74621DYJ2B2A4N98G200-559-2
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External database identifiers

Retrieved from NIH PubChem on 2026-08-31 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.

Records for CAS 63-42-3

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How CAS 63-42-3 is used on this site

CAS 63-42-3 is the Chemical Abstracts Service identifier used to pin this page to a specific substance. In the current dataset, 0 EU annex records share this identifier, which helps you cross-check whether the same substance appears under one regulatory context or several.

Use this page when a supplier specification, SDS or raw-material dossier gives you CAS 63-42-3 and you need to see every linked Annex II–VI record in one place. The entry cards above are the quickest route to concentration limits, warnings, annex placement and product-type conditions.