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Substance Name: Lactose, anhydrous [NF]
RN: 63-42-3
UNII: 3SY5LH9PMK
InChIKey: DKXNBNKWCZZMJT-JVCRWLNRSA-N

Note

  • A disaccharide of GLUCOSE and GALACTOSE in human and cow milk. It is used in pharmacy for tablets, in medicine as a nutrient, and in industry.

Molecular Formula

  • C12-H22-O11

Molecular Weight

  • 342.2948
 

Classification Codes

  • Flavoring Agents
  • Food Additives
  • Natural Product
  • Pharmaceutic Aid (Tablet and Capsule Diluent)
  • Reproductive Effect
  • Sweetening Agents
  • Tumor Data

Names and Synonyms

Name of Substance

  • 4-O-beta-D-Galactopyranosyl-D-glucose
  • D-Glucose, 4-O-beta-D-galactopyranosyl-
  • Lactose
  • Lactose [JAN]
  • Lactose, anhydrous [NF]
  • Milk sugar

MeSH Heading

  • Lactose

Synonyms

  • (+)-Lactose
  • 4-(beta-D-Galactosido)-D-glucose
  • 4-17-00-03066 (Beilstein Handbook Reference)
  • 4-O-beta-D-Galactopyranosyl-D-glucose
  • AHL
  • AI3-08876
  • Aletobiose
  • BRN 0093796
  • CCRIS 7078
  • D-Glucose, 4-O-beta-D-galactopyranosyl-
  • D-Lactose
  • EINECS 200-559-2
  • Fast-flo
  • Fast-flo Lactose
  • Galactinum
  • HSDB 7962
  • Lactin
  • Lactin (carbohydrate)
  • Lactobiose
  • Lactose
  • Lactose Fast-flo
  • Lactose, anhydrous
  • Milk sugar
  • ML 006
  • Pharmatose 21
  • Pharmatose 450M
  • Saccharum lactin
  • Tablettose
  • UNII-3SY5LH9PMK
  • Zeparox EP

Systematic Names

  • D-Glucose, 4-O-beta-D-galactopyranosyl-
  • Lactose

Superlist Names

  • D-(+)-Lactose
  • Lactose

Registry Numbers

CAS Registry Number

  • 63-42-3

FDA UNII

  • 3SY5LH9PMK

Other Registry Numbers

  • 1065027-17-9
  • 1336-90-9
  • 200734-90-3
  • 35396-14-6
  • 36570-80-6
  • 396716-09-9
  • 73824-63-2
  • 89466-76-2

Related Registry Number

  • 16984-38-6 (Alternate)

System Generated Number

  • 0000063423

Structure Descriptors

InChI

1S/C12H22O11/c13-1-4(16)7(18)11(5(17)2-14)23-12-10(21)9(20)8(19)6(3-15)22-12/h1,4-12,14-21H,2-3H2/t4-,5+,6+,7+,8-,9-,10+,11+,12-/m0/s1

InChIKey

DKXNBNKWCZZMJT-JVCRWLNRSA-N

Smiles

C([C@@H]1[C@@H]([C@@H]([C@H]([C@@H](O1)O[C@H]([C@@H](CO)O)[C@@H]([C@H](C=O)O)O)O)O)O)O

Toxicity

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
dog LDLo intravenous 1500mg/kg (1500mg/kg)   "Abdernalden's Handbuch der Biologischen Arbeitsmethoden." Vol. 4, Pg. 1289, 1935.
rat LD50 intraperitoneal > 10gm/kg (10000mg/kg)   Yakuri to Chiryo. Pharmacology and Therapeutics. Vol. 3, Pg. 2427, 1975.
rat LD50 oral > 10gm/kg (10000mg/kg)   Yakuri to Chiryo. Pharmacology and Therapeutics. Vol. 3, Pg. 2427, 1975.
rat LD50 subcutaneous > 5gm/kg (5000mg/kg)   Yakuri to Chiryo. Pharmacology and Therapeutics. Vol. 3, Pg. 2427, 1975.

Physical Properties

Physical Property Value Units Temp (deg C) Source
Melting Point 201-202 deg C   EXP
log P (octanol-water) -5.030 (none)   EST
Water Solubility 1.95E+05 mg/L 20 EXP
Vapor Pressure 8.09E-17 mm Hg 25 EST
Henry's Law Constant 3.40E-19 atm-m3/mole 25 EST
Atmospheric OH Rate Constant 1.54E-10 cm3/molecule-sec 25 EST

Physical property data is provided to ChemIDplus by SRC, Inc.