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Protocatechuic acid (CAS 99-50-3)

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Synonym:3,4-Dihydroxybenzoic acid
Application:A phenolic acid antioxidant and chemopreventive agent
CAS Number:99-50-3
Molecular Weight:154.12
Molecular Formula:C7H6O4
Refer to Certificate of Analysis for lot specific data (including water content).
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 Ordering Information
Product NameCatalog #UnitPriceQtyAddFavorites
Protocatechuic acid sc-205818 25 g $124
Protocatechuic acid sc-205818A 50 g $250
Protocatechuic Acid is a phenolic acid antioxidant present in fruits, vegetables and nuts. Protocatechuic Acid has been found to be an efficacious chemopreventive agent in several carcinogenesis models.
Technical Information
Appearance:Crystalline powder
Physical State:Solid
Solubility:Soluble in water (1:50), ethanol, and ether.
Storage:Store at 4° C
Melting Point:197-200° C (lit.)(dec.)
Boiling Point:410.7° C at 760 mmHg (Predicted)
Density:1.6 g/cm3 (Predicted)
Refractive Index:n20D 1.67 (Predicted)
IC50:Plasmodium falciparum: IC50 = >5 µg.mL-1 (plasmodium falciparum); Cathepsin L1: IC50 = >59.64 µM (human); M18 aspartyl aminopeptidase: IC50 = 479.4 nM (plasmodium falciparum 3D7)
Ki Data:Carbonic anhydrase II: Ki= 470 nM (human); Carbonic anhydrase: Ki= 3.21 µM (dicentrarchus labrax); Carbonic anhydrase IX: Ki= 4.45 µM (human); Carbonic anhydrase VI: Ki= 4.72 µM (human); Carbonic anhydrase XII: Ki= 4.09 µM (human); 3-dehydroquinate synthase: Ki= 44 µM (escherichia coli K-12)
pK Values:pKa: 4.45 (Predicted)
Safety and Reference Information
WGK Germany:3
PubChem CID:72
Merck Index:14: 7894
MDL Number:MFCD00002509
EC Number:202-760-0
Beilstein Registry:1448841
For Research Use Only. Not Intended for Diagnostic or Therapeutic Use.

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Tanaka T, Kojima T, Kawamori T, Mori H. Cancer. 75:1433-1439 (1995).
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