1. Immunology/Inflammation
  2. COX
  3. Firocoxib

Firocoxib (Synonyms: ML 1785713)

Cat. No.: HY-14670 Purity: 99.50%
Handling Instructions

Firocoxib(ML 1785713) is a potent and selective cyclooxygenase (COX)-2 inhibitor with IC50 of 0.13 uM, 58 fold sensitivity for COX2 VSCOX1.

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

Firocoxib Chemical Structure

Firocoxib Chemical Structure

CAS No. : 189954-96-9

Size Price Stock Quantity
10 mM * 1 mL in DMSO USD 158 In-stock
Estimated Time of Arrival: December 31
5 mg USD 144 In-stock
Estimated Time of Arrival: December 31
10 mg USD 192 In-stock
Estimated Time of Arrival: December 31
50 mg USD 688 In-stock
Estimated Time of Arrival: December 31
100 mg   Get quote  
200 mg   Get quote  

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Firocoxib(ML 1785713) is a potent and selective cyclooxygenase (COX)-2 inhibitor with IC50 of 0.13 uM, 58 fold sensitivity for COX2 VSCOX1. IC50 value: 0.13 uM [1] Target: COX2 inhibitor in vitro: Blood concentrations resulting in 50% inhibition of COX-1 and COX-2 activity in vitro were 75 +/- 2 microM and 0.13 +/- 0.03 microM, respectively, and selectivity for inhibiting COX-2 relative to COX-1 was 58. Firocoxib had moderate to high oral bioavailability (54% to 70%), low plasma clearance (4.7 to 5.8 mL/min/kg), and an elimination half-life of 8.7 to 12.2 hours [1]. in vivo: Administration of firocoxib did not cause any adverse effects on GI, or hematological or serum biochemical variables and appears to have been well tolerated by dogs [2]. Firocoxib (0.5 mg/kg) was initially administered i.v. to calves, and following a 14-day washout period, animals received firocoxib orally prior to cautery dehorning. Firocoxib concentrations were determined by liquid chromatography-tandem mass spectrometry [3]. Firocoxib 5 mg/kg was given orally once daily for 180 days to five dogs with clinical signs and histopathological lesions consistent with solar dermatitis/actinic keratosis. On days 0, 50 and 180, the severity of erythema, skin shine, induration and the number of comedones were evaluated by a clinical scoring system [4].

IC50 & Target[1]


0.13 μM (IC50)


7.5 μM (IC50)

Molecular Weight









Room temperature in continental US; may vary elsewhere.


4°C, protect from light, stored under nitrogen

*In solvent : -80°C, 6 months; -20°C, 1 month (protect from light, stored under nitrogen)

Solvent & Solubility
In Vitro: 

DMSO : ≥ 52 mg/mL (154.58 mM)

*"≥" means soluble, but saturation unknown.

Stock Solutions
Concentration Solvent Mass 1 mg 5 mg 10 mg
1 mM 2.9727 mL 14.8633 mL 29.7265 mL
5 mM 0.5945 mL 2.9727 mL 5.9453 mL
10 mM 0.2973 mL 1.4863 mL 2.9727 mL
*Please refer to the solubility information to select the appropriate solvent.
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FirocoxibML 1785713ML1785713ML-1785713COXCyclooxygenaseInhibitorinhibitorinhibit

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