1. Anti-infection
  2. Parasite
    Toll-like Receptor (TLR)
  3. Hydroxychloroquine sulfate

Hydroxychloroquine sulfate (Synonyms: HCQ sulfate)

Cat. No.: HY-B1370 Purity: 99.99%
Handling Instructions

Hydroxychloroquine sulfate is a synthetic antimalarial drug which can also inhibit Toll-like receptor 7/9 (TLR7/9) signaling.

For research use only. We do not sell to patients.

Hydroxychloroquine sulfate Chemical Structure

Hydroxychloroquine sulfate Chemical Structure

CAS No. : 747-36-4

Size Price Stock Quantity
10 mM * 1 mL in Water USD 66 In-stock
Estimated Time of Arrival: December 31
50 mg USD 60 In-stock
Estimated Time of Arrival: December 31
100 mg   Get quote  
200 mg   Get quote  

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Customer Review

Based on 7 publication(s) in Google Scholar

Top Publications Citing Use of Products
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Hydroxychloroquine sulfate is a synthetic antimalarial drug which can also inhibit Toll-like receptor 7/9 (TLR7/9) signaling.

IC50 & Target

Antimalarial[1], TLR7/9[2]

In Vitro

Hydroxychloroquine sulfate is a synthetic antimalarial drug derived from 4-aminoquinoline; it has been used for several decades for the treatment of some rheumatic diseases such as rheumatoid arthritis (RA)[1]. Five micromolar Hydroxychloroquine sulfate or chloroquine also has no measurable effect on intracellular pH, although these concentrations can inhibit TLR9 or 7 signaling induced by DNA or RNA ligands[2].

In Vivo

Hydroxychloroquine sulfate is prescribed for the treatment of lupus, and both Hydroxychloroquine sulfate and its analog chloroquine inhibit TLR7 and 9 signaling[2].

Clinical Trial
Molecular Weight









Room temperature in continental US; may vary elsewhere.

Powder -20°C 3 years
  4°C 2 years
In solvent -80°C 6 months
  -20°C 1 month
Solvent & Solubility
In Vitro: 

H2O : 110 mg/mL (253.49 mM; Need ultrasonic and warming)

Stock Solutions
Concentration Solvent Mass 1 mg 5 mg 10 mg
1 mM 2.3044 mL 11.5221 mL 23.0441 mL
5 mM 0.4609 mL 2.3044 mL 4.6088 mL
10 mM 0.2304 mL 1.1522 mL 2.3044 mL
*Please refer to the solubility information to select the appropriate solvent.
Kinase Assay

Five microliters of a solution of 2% L-α-phosphatidylcholine in dodecane is deposited per well on membranes of a 96-well plate. AT791 (10 µM), E6446 (10 µM), Hydroxychloroquine sulfate (40 µM), or chloroquine (40 µM) are added to one of the two compartments in pH 5.5 buffer (50 mM NaAce, 15 mM NaCl) or pH 7.4 buffer (50 mM KPO4, 150 mM NaCl), and the plate is incubated at 37°C. The next day, compound concentrations in both chambers are quantitated. In one variation of this experiment, 5 µM AT791 or E6446 is added to both chambers, one of which contains pH 5.5 buffer and the other pH 7.4 buffer. The redistribution of compound between the two chambers is monitored for 8 hours[2].

MCE has not independently confirmed the accuracy of these methods. They are for reference only.

Animal Administration

MRL/lpr mice are dosed orally five times a week with 20 or 60 mg/kg E6446 or 60 mg/kg Hydroxychloroquine sulfate beginning at 5 weeks of age. Cytoxan is administered at 50 mg/kg i.p. every 10 days. A serum sample is taken immediately before the beginning of treatment to monitor changes in autoreactive antibodies. Subsequently, serum samples are collected approximately monthly and analyzed for anti-dsDNA by ELISA after 1:500 dilution. Body weights and urine samples are taken at the same interval, and proteinuria is assessed. Anti-nuclear antibodies (ANA) are assessed using commercially available HEp2 slide kits, with serum diluted to 1:100 in kit buffer. ANA scores are read blinded[2].

MCE has not independently confirmed the accuracy of these methods. They are for reference only.


Purity: 99.99%

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HydroxychloroquineHCQParasiteToll-like Receptor (TLR)AutophagyInhibitorinhibitorinhibit

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