Basic information Safety Supplier Related
ChemicalBook >  Product Catalog >  Organic Chemistry >  Quinones >  LAPACHOL

LAPACHOL

Basic information Safety Supplier Related

LAPACHOL Basic information

Product Name:
LAPACHOL
Synonyms:
  • LAPACHOL
  • CI 75490
  • NATURAL YELLOW 16
  • 2-HYDROXY-3-(3-METHYL-2-BUTENYL)-1,4-NAPHTHOQUINONE
  • 2-HYDROXY-3-(3-METHYLBUT-2-ENYL)-1,4-NAPHTHOQUINONE
  • 1,4-Naphthoquinone, 2-hydroxy-3-(3-methyl-2-butenyl)-
  • 2-Hydroxy-3-(3-methyl-2-butenyl)-1,4-naphthalenedione
  • 2-hydroxy-3-(3-methyl-2-butenyl)-4-naphthoquinone
CAS:
84-79-7
MF:
C15H14O3
MW:
242.27
EINECS:
201-563-7
Product Categories:
  • Building Blocks
  • C15 to C38
  • Carbonyl Compounds
  • Chemical Synthesis
  • Ketones
  • Organic Building Blocks
  • Anthraquinones, Hydroquinones and Quinones
Mol File:
84-79-7.mol
More
Less

LAPACHOL Chemical Properties

Melting point:
141-143 °C(lit.)
Boiling point:
325.09°C (rough estimate)
Density 
1.2077 (rough estimate)
refractive index 
1.5740 (estimate)
storage temp. 
Sealed in dry,Room Temperature
solubility 
ethanol: soluble10mg/mL, clear, light yellow to yellow
pka
4.81±0.10(Predicted)
form 
Solid
Colour Index 
75490
color 
Yellow to Dark Yellow
Merck 
13,5382
InChIKey
CIEYTVIYYGTCCI-UHFFFAOYSA-N
LogP
2.516 (est)
CAS DataBase Reference
84-79-7
More
Less

Safety Information

Hazard Codes 
Xn
Risk Statements 
20/21/22-36/37/38
Safety Statements 
26-36
WGK Germany 
3
RTECS 
QL8750000
Toxicity
LD50 in male, female BALB/c mice (g/kg): 0.487; 0.792 orally (Morrison)

MSDS

More
Less

LAPACHOL Usage And Synthesis

Description

Lapachol, a benzoquinone, is a secondary allergen in teak (Tectona grandis).

Occurrence

Lapacol (CI Natural Yellow 16; CI 75490) (lapachic acid, taiguie acid, tecomin) is a yellow pigment occurring in the wood of trees of the genus Tecoma, native to the West Indies and tropical South America. The shavings of the wood, treated with lime water, give an extract that dyes cotton yellow.

Uses

Lapachol was used in the synthesis of the lapachol metal complexes.

Uses

antineoplastic, antifungal

Uses

It was used in the synthesis of the lapachol metal complexes.

Definition

ChEBI: Lapachol is a hydroxy-1,4-naphthoquinone that is 1,4-naphthoquinone substituted by hydroxy and 3-methylbut-2-en-1-yl groups at positions 2 and 3, respectively. It is a natural compound that exhibits antibacterial and anticancer properties, first isolated in 1882 from the bark of Tabebuia avellanedae. It has a role as a plant metabolite, an antineoplastic agent, an antibacterial agent and an anti-inflammatory agent. It is a hydroxy-1,4-naphthoquinone and an olefinic compound.

General Description

Lapachol is natural naphthoquinone compound derived from Bignoniaceae (Tabebuia sp.).

Contact allergens

Lapachol, a benzoquinone, is a secondary allergen in teak (Tectona grandis L., Verbenaceae family), a wood largely used for various indoor and outdoor applications (doors, windows, etc.) because of its strong durability. It has similar reactivity to deoxylapachol. Seealso Chap. 46

Biochem/physiol Actions

Lapachol has antimicrobial properties against many pathogens. It has anti-inflammatory, analgesic and antibiotic properties. It is inhibitor of epithelial tumors in Drosophila melanogaster heterozygote.

Purification Methods

Crystallise Lapachol from pet ether/EtOH, EtOH or Et2O. [Beilstein 8 H 326, 8 I 644, 8 II 365, 8 III 2720.]

LAPACHOLSupplier

Nanjing Endesa Bio-tech Co., Ltd. Gold
Tel
025-58862853 18915922038
Email
sales@endesachem.com
J & K SCIENTIFIC LTD.
Tel
010-82848833 400-666-7788
Email
jkinfo@jkchemical.com
3B Pharmachem (Wuhan) International Co.,Ltd.
Tel
821-50328103-801 18930552037
Email
3bsc@sina.com
Chembest Research Laboratories Limited
Tel
+86-21-20908456
Email
sales@BioChemBest.com
Energy Chemical
Tel
021-021-58432009 400-005-6266
Email
sales8178@energy-chemical.com