Amlexanox

Modify Date: 2024-01-02 18:50:21

Amlexanox Structure
Amlexanox structure
Common Name Amlexanox
CAS Number 68302-57-8 Molecular Weight 298.293
Density 1.4±0.1 g/cm3 Boiling Point 570.0±50.0 °C at 760 mmHg
Molecular Formula C16H14N2O4 Melting Point >3000C
MSDS USA Flash Point 298.5±30.1 °C
Symbol GHS07
GHS07
Signal Word Warning

 Use of Amlexanox


AmLexanox is a specific inhibitor of IKKε and TBK1, and inhibits the IKKε and TBK1 activity determined by MBP phosphorylation with an IC50 of approximately 1-2 μM.

 Names

Name 2-amino-5-oxo-7-propan-2-ylchromeno[2,3-b]pyridine-3-carboxylic acid
Synonym More Synonyms

 Amlexanox Biological Activity

Description AmLexanox is a specific inhibitor of IKKε and TBK1, and inhibits the IKKε and TBK1 activity determined by MBP phosphorylation with an IC50 of approximately 1-2 μM.
Related Catalog
Target

IKKε:1-2 μM (IC50)

TBK1:1-2 μM (IC50)

In Vitro AmLexanox increases phosphorylation of TBK1 on Ser172 in 3T3-L1 adipocytes, and blocks polyinosinic:polycytidylic acid (poly I:C)-stimulated phosphorylation of interferon responsive factor-3 (IRF3), a presumed substrate of IKKε and TBK1[1]. AmLexanox potently inhibits the release of histamine and leukotrienes from mast cells, basophils and neutrophils in in vitro settings, possibly through increasing intracellular cyclic AMP content in inflammatory cells, a mem-brane-stabilising effect or inhibition of calcium influx[2]. In primary bone marrow derived macrophages (BMMs), amLexanox inhibits osteoclast formation and bone resorption. At the molecular level, amLexanox suppresses RANKL-induced activation of nuclear factor-κB (NF-κB), mitogen-activated protein kinase (MAPKs), c-Fos and NFATc1. AmLexanox decreases the expression of osteoclast-specific genes, including TRAP, MMP9, Cathepsin K and NFATc1[3].
In Vivo AmLexanox (100 mg/kg, p.o.) prevents and reverses diet-induced or genetic obesity, and produces reversible weight loss in obese mice. AmLexanox also causes a significant decrease in adipose tissue mass in these mice, and an increase in circulating adiponectin. AmLexanox (25 mg/kg) significantly improves insulin sensitivity in mice with established DIO,and after four weeks of treatment, amLexanox produces marked improvements in glucose[1]. AmLexanox before the first application of the paste and at each has been shown to suppress both immediate and evaluation thereafter. A categorical scale is also delayed-type hypersensitivity reactions[2]. AmLexanox (20 mg/kg) enhances osteoblast differentiation of BMSCs. In ovariectomized (OVX) mouse model, amLexanox prevents OVX-induced bone loss by suppressing osteoclast activity[3].
Kinase Assay The in vitro kinase assays is performed by incubating purified kinase (IKKε or TBK1) in kinase buffer containing 25 mM Tris (pH7.5), 10 mM MgCl2, 1 mM DTT, and 10 µM ATP for 30 minutes at 30°C in the presence of 0.5 µCi γ-[32P]-ATP and 1 µg MBP per sample as a substrate. The kinase reaction is stopped by adding 4x sodium dodecyl sulfate (SDS) sample buffer and boiling for 5 minutes at 95°C. Supernatants are resolved by SDS-polyacrylamide gel electrophoresis, transferred to nitrocellulose, and analyzed by autoradiography using a Typhoon 9410 phosphorimager.
Cell Assay To examine cell proliferation, a Cell Counting Kit-8 is used according to the manufacturer’s instructions. BMMs are seeded at a density of 5×103 cells/well in 96-well plates. After 24 hours, cells are treated with different concentrations of AmLexanox (0, 1.5, 3, 6, 12, 25 μM) every 2 days in the presence of M-CSF (30 ng/mL) for 7 days. After 1, 3, 5 and 7 days, the culture medium is replaced by the medium containing 10% CCK-8 and cells are incubated at 37°C for an additional 2 h. The absorbance is then measured at a wavelength of 450 nm on an ELX800 absorbance microplate reader.
Animal Admin Wildtype male C57BL/6 mice are fed with a HFD consisting of 45% of calories from fat starting at eight weeks of age for 12-24 weeks, while ND C57BL/6 controls are maintained on normal chow diet consisting of 4.5% fat. C57BL/6 diets are fed containing ω-3 fatty acids. Rosiglitazone treatment is administered for three weeks by addition of the compound to the diet in mice that have been on HFD for 16 weeks. Each mouse consumes on average 3.5 mg per kg rosiglitazone per day. AmLexanox is administered by daily oral gavage. For the prevention groups, amLexanox (25 mg per kg or 100 mg per kg) administration is begun concurrently with HFD feeding at eight weeks of age. For the treatment groups, 25 mg per kg amLexanox treatment is begun at 20 weeks of age after 12 weeks of HFD. To test the effect of amLexanox withdrawal, mice in the treatment group are switched from amLexanox gavage to vehicle control after eight weeks of amLexanox treatment. Control and ob/ob mice are fed with a normal chow diet and gavaged with 100 mg per kg amLexanox or vehicle control beginning at ten weeks of age. Animals are housed in a specific pathogen-free facility with a 12-hour light/12-hour dark cycle and given free access to food and water.
References

[1]. Reilly SM, et al. An inhibitor of the protein kinases TBK1 and IKK-e improves obesity-related metabolic dysfunctions in mice. Nat Med. 2013 Mar;19(3):313-21.

[2]. Bell, J. AmLexanox for the treatment of recurrent aphthous ulcers. Clin Drug Investig, 2005. 25(9): p. 555-66.

[3]. Zhang Y, et al. AmLexanox Suppresses Osteoclastogenesis and Prevents Ovariectomy-Induced Bone Loss. Sci Rep. 2015 Sep 4;5:13575.

 Chemical & Physical Properties

Density 1.4±0.1 g/cm3
Boiling Point 570.0±50.0 °C at 760 mmHg
Melting Point >3000C
Molecular Formula C16H14N2O4
Molecular Weight 298.293
Flash Point 298.5±30.1 °C
Exact Mass 298.095367
PSA 106.42000
LogP 3.74
Vapour Pressure 0.0±1.6 mmHg at 25°C
Index of Refraction 1.669
Storage condition -20°C Freezer

 Toxicological Information

CHEMICAL IDENTIFICATION

RTECS NUMBER :
DJ3102000
CHEMICAL NAME :
5H-(1)Benzopyrano(2,3-b)pyridine-3-carboxylic acid, 2-amino-7-(1-methylethyl)-5-oxo-
CAS REGISTRY NUMBER :
68302-57-8
LAST UPDATED :
199612
DATA ITEMS CITED :
9
MOLECULAR FORMULA :
C16-H14-N2-O4
MOLECULAR WEIGHT :
298.32

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
10 gm/kg
TOXIC EFFECTS :
Behavioral - somnolence (general depressed activity) Lungs, Thorax, or Respiration - dyspnea Nutritional and Gross Metabolic - body temperature decrease
REFERENCE :
YACHDS Yakuri to Chiryo. Pharmacology and Therapeutics. (Raifu Saiensu Shuppan K.K., 2-5-13, Yaesu, Chuo-ku, Tokyo 104, Japan) V.1- 1972- Volume(issue)/page/year: 13,6405,1985
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Intraperitoneal
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
500 mg/kg
TOXIC EFFECTS :
Behavioral - somnolence (general depressed activity) Lungs, Thorax, or Respiration - dyspnea Nutritional and Gross Metabolic - body temperature decrease
REFERENCE :
YACHDS Yakuri to Chiryo. Pharmacology and Therapeutics. (Raifu Saiensu Shuppan K.K., 2-5-13, Yaesu, Chuo-ku, Tokyo 104, Japan) V.1- 1972- Volume(issue)/page/year: 13,6405,1985
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Subcutaneous
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
1400 mg/kg
TOXIC EFFECTS :
Behavioral - somnolence (general depressed activity) Lungs, Thorax, or Respiration - dyspnea Nutritional and Gross Metabolic - body temperature decrease
REFERENCE :
YACHDS Yakuri to Chiryo. Pharmacology and Therapeutics. (Raifu Saiensu Shuppan K.K., 2-5-13, Yaesu, Chuo-ku, Tokyo 104, Japan) V.1- 1972- Volume(issue)/page/year: 13,6405,1985
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Rodent - mouse
DOSE/DURATION :
2320 mg/kg
TOXIC EFFECTS :
Behavioral - somnolence (general depressed activity) Lungs, Thorax, or Respiration - dyspnea Nutritional and Gross Metabolic - body temperature decrease
REFERENCE :
YACHDS Yakuri to Chiryo. Pharmacology and Therapeutics. (Raifu Saiensu Shuppan K.K., 2-5-13, Yaesu, Chuo-ku, Tokyo 104, Japan) V.1- 1972- Volume(issue)/page/year: 13,6405,1985
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Intraperitoneal
SPECIES OBSERVED :
Rodent - mouse
DOSE/DURATION :
450 mg/kg
TOXIC EFFECTS :
Behavioral - somnolence (general depressed activity) Lungs, Thorax, or Respiration - dyspnea Nutritional and Gross Metabolic - body temperature decrease
REFERENCE :
YACHDS Yakuri to Chiryo. Pharmacology and Therapeutics. (Raifu Saiensu Shuppan K.K., 2-5-13, Yaesu, Chuo-ku, Tokyo 104, Japan) V.1- 1972- Volume(issue)/page/year: 13,6405,1985
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Subcutaneous
SPECIES OBSERVED :
Rodent - mouse
DOSE/DURATION :
3310 mg/kg
TOXIC EFFECTS :
Behavioral - somnolence (general depressed activity) Lungs, Thorax, or Respiration - dyspnea Nutritional and Gross Metabolic - body temperature decrease
REFERENCE :
YACHDS Yakuri to Chiryo. Pharmacology and Therapeutics. (Raifu Saiensu Shuppan K.K., 2-5-13, Yaesu, Chuo-ku, Tokyo 104, Japan) V.1- 1972- Volume(issue)/page/year: 13,6405,1985 ** OTHER MULTIPLE DOSE TOXICITY DATA **
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
35 gm/kg/5W-I
TOXIC EFFECTS :
Gastrointestinal - other changes Liver - other changes Biochemical - Enzyme inhibition, induction, or change in blood or tissue levels - phosphatases
REFERENCE :
YACHDS Yakuri to Chiryo. Pharmacology and Therapeutics. (Raifu Saiensu Shuppan K.K., 2-5-13, Yaesu, Chuo-ku, Tokyo 104, Japan) V.1- 1972- Volume(issue)/page/year: 13,4843,1985
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
54600 mg/kg/26W-C
TOXIC EFFECTS :
Liver - other changes Biochemical - Enzyme inhibition, induction, or change in blood or tissue levels - phosphatases
REFERENCE :
YACHDS Yakuri to Chiryo. Pharmacology and Therapeutics. (Raifu Saiensu Shuppan K.K., 2-5-13, Yaesu, Chuo-ku, Tokyo 104, Japan) V.1- 1972- Volume(issue)/page/year: 13,6411,1985
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Mammal - dog
DOSE/DURATION :
3500 mg/kg/5W-C
TOXIC EFFECTS :
Blood - changes in serum composition (e.g. TP, bilirubin, cholesterol) Biochemical - Enzyme inhibition, induction, or change in blood or tissue levels - phosphatases Biochemical - Enzyme inhibition, induction, or change in blood or tissue levels - transaminases
REFERENCE :
YACHDS Yakuri to Chiryo. Pharmacology and Therapeutics. (Raifu Saiensu Shuppan K.K., 2-5-13, Yaesu, Chuo-ku, Tokyo 104, Japan) V.1- 1972- Volume(issue)/page/year: 13,7123,1985

 Safety Information

Symbol GHS07
GHS07
Signal Word Warning
Hazard Statements H302
Precautionary Statements P301 + P312 + P330
Hazard Codes Xn,Xi
Risk Phrases R22:Harmful if swallowed. R36/37/38:Irritating to eyes, respiratory system and skin .
Safety Phrases S26
RIDADR NONH for all modes of transport
WGK Germany 3
RTECS XZ3012000
HS Code 2934999090

 Synthetic Route

~87%

Amlexanox Structure

Amlexanox

CAS#:68302-57-8

Literature: Nohara; Ishiguro; Ukawa; Sugihara; Maki; Sanno Journal of Medicinal Chemistry, 1985 , vol. 28, # 5 p. 559 - 586

~%

Amlexanox Structure

Amlexanox

CAS#:68302-57-8

Literature: Journal of Medicinal Chemistry, , vol. 28, # 5 p. 559 - 586

 Precursor & DownStream

Precursor  2

DownStream  0

 Customs

HS Code 2934999090
Summary 2934999090. other heterocyclic compounds. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

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 Synonyms

2-amino-7-(1-methylethyl)-5-oxo-5H-chromeno[2,3-b]pyridine-3-carboxylic acid
Amlexanoxum
2-Amino-7-isopropyl-5-oxo-5H-[1]benzopyrano[2,3-b]pyridine-3-carboxylic Acid
Amlenanox
5H-[1]benzopyrano[2,3-b]pyridine-3-carboxylic acid, 2-amino-7-(1-methylethyl)-5-oxo-
Amlexanox
Amlexanoxo
Elics
Amoxanox
Solfa
MFCD00864790
2-Amino-7-(1-methylethyl)-5-oxo-5H-[1]benzopyrano[2,3-b]pyridine-3-carboxylicAcid
amlexanoxum [INN_la]
Aphthasol
2-Amino-7-isopropyl-1-azaxanthone-3-carboxylic Acid
[14C]-Amlexanox
Amlexanoxum [Latin]
2-Amino-7-isopropyl-5-oxo-5H-chromeno[2,3-b]pyridine-3-carboxylic acid
2-amino-5-oxo-7-(propan-2-yl)-5H-chromeno[2,3-b]pyridine-3-carboxylic acid
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