Type	HazMat fee for 500 gram (Estimated)
Excepted Quantity	USD 0.00
Limited Quantity	USD 15-60
Inaccessible (Haz class 6.1), Domestic	USD 80+
Inaccessible (Haz class 6.1), International	USD 150+
Accessible (Haz class 3, 4, 5 or 8), Domestic	USD 100+
Accessible (Haz class 3, 4, 5 or 8), International	USD 200+

CAS No. :	4394-00-7
Formula :	C₁₃H₉F₃N₂O₂
M.W :	282.22
SMILES Code :	C1=C(C(=NC=C1)NC2=CC(=CC=C2)C(F)(F)F)C(O)=O
Synonyms :	Actol; Nifluril; Niflumic Acid, Donalgin, Flunir, Niflactol, Niflugel, Nifluril
MDL No. :	MFCD00010569
InChI Key :	JZFPYUNJRRFVQU-UHFFFAOYSA-N
Pubchem ID :	4488

GHS Pictogram:
Signal Word:	Danger
Hazard Statements:	H301+H311+H331-H315-H319
Precautionary Statements:	P501-P261-P270-P271-P264-P280-P337+P313-P305+P351+P338-P361+P364-P332+P313-P301+P310+P330-P302+P352+P312-P304+P340+P311-P403+P233-P405
Class:	6.1
UN#:	2811
Packing Group:	Ⅲ

Rat aortic smooth muscle cells	10 µM	10 min	Niflumic acid did not inhibit contractions induced by KCl (up to 120 mM), which were completely blocked by nifedipine.	Br J Pharmacol. 1996 Jun;118(4):1065-71
CHO cells	30, 100 µM	10 s	Niflumic acid inhibited glycine-induced currents mediated by α3 glycine receptors, with higher blocking potency at positive membrane potentials.	Front Mol Neurosci. 2017 May 16;10:125
CHO cells	10, 30, 100 µM	10 s	Niflumic acid showed stronger inhibition of glycine-induced currents mediated by α2 glycine receptors, with pronounced voltage dependence.	Front Mol Neurosci. 2017 May 16;10:125
CHO cells	30, 100, 300 µM	10 s	Niflumic acid inhibited glycine-induced currents mediated by α1 glycine receptors in a voltage-dependent manner, with higher blocking potency at positive membrane potentials.	Front Mol Neurosci. 2017 May 16;10:125
Rat skeletal muscle fibers	42 µM (IC50)	10–15 minutes	Niflumic acid inhibits chloride conductance of rat skeletal muscle by directly inhibiting the CLC-1 channel and by increasing intracellular calcium.	Br J Pharmacol. 2007 Jan;150(2):235-47
Hypoglossal motoneurons (HMs) in brainstem slices from mice	100 µM	1-3 minutes	NFA inhibited the amplitude and frequency of glycinergic synaptic currents, with stronger inhibition in the neonatal group	Front Mol Neurosci. 2018 Nov 13;11:416
Rat aortic smooth muscle cells	10 µM	15 min	In Ca-free conditions, niflumic acid did not inhibit the transient contraction induced by 1 μM NA, indicating it does not reduce calcium release from intracellular stores or the sensitivity of the contractile apparatus to calcium.	Br J Pharmacol. 1996 Jun;118(4):1065-71
Rat aortic smooth muscle cells	10 µM	15 min	Niflumic acid inhibited contractions induced by brief application of 1 μM NA by 55%.	Br J Pharmacol. 1996 Jun;118(4):1065-71
Rat mesenteric vascular bed smooth muscle cells	10 and 30 µM	15 minutes	Niflumic acid inhibited noradrenaline- and 5-HT-induced pressor responses, with 30 μM niflumic acid reducing the pressor response to 1 nmol noradrenaline by 34±6%.	Br J Pharmacol. 1997 Mar;120(5):813-8
Rat stomach fundus smooth muscle cells	1-30 µM	15 minutes	Niflumic acid concentration-dependently inhibited 5-HT-induced contractions, reducing to 15.5±6.0% of control at 30 μM.	Br J Pharmacol. 2000 Jun;130(3):678-84
Rat pulmonary artery smooth muscle cells	50 µM	2 minutes	NFA significantly increased basal [Ca2+]i and attenuated the caffeine-induced increase in [Ca2+]i.	Br J Pharmacol. 2003 Dec;140(8):1442-50
Xenopus oocytes	100 µM	2 to 5 min	NFA increased Kv1.1 current amplitudes by enhancing the channel open probability, causing a hyperpolarizing shift in the voltage dependence of both channel opening and gating charge movement, slowing the OFF-gating current decay.	Proc Natl Acad Sci U S A. 2023 Aug;120(31):e2207978120
HEK293 cells	50 µM	24 hours	Niflumic acid (NFA) acted as a pharmacological chaperone, restoring chloride current density of A531V and V947E mutants to levels similar to WT without altering voltage dependence.	Front Pharmacol. 2022 Aug 11;13:958196
Rat aortic smooth muscle cells	3 µM and 10 µM	30 min	Niflumic acid reversibly and concentration-dependently inhibited noradrenaline (NA)-induced contractions, with 10 μM niflumic acid inhibiting the maximal contraction by 38%.	Br J Pharmacol. 1996 Jun;118(4):1065-71
BALB/3T3 clone A31 (mouse normal fibroblasts)	158.8 ± 33.0 µM (IC50)	72 hours	Evaluation of antiproliferative activity of niflumic acid alone, IC50 value was 158.8 ± 33.0 µM	Int J Mol Sci. 2024 Oct 13;25(20):11015
A172 (glioblastoma)	143.2 ± 6.5 µM (IC50)	72 hours	Evaluation of antiproliferative activity of niflumic acid alone, IC50 value was 143.2 ± 6.5 µM	Int J Mol Sci. 2024 Oct 13;25(20):11015
MCC13 (Merkel cell cancer)	175.4 ± 6.9 µM (IC50)	72 hours	Evaluation of antiproliferative activity of niflumic acid alone, IC50 value was 175.4 ± 6.9 µM	Int J Mol Sci. 2024 Oct 13;25(20):11015
SK-MEL-3 (melanoma)	167.1 ± 4.4 µM (IC50)	72 hours	Evaluation of antiproliferative activity of niflumic acid alone, IC50 value was 167.1 ± 4.4 µM	Int J Mol Sci. 2024 Oct 13;25(20):11015
UM-SCC-17A (head and neck squamous carcinoma)	310.3 ± 32.6 µM (IC50)	72 hours	Evaluation of antiproliferative activity of niflumic acid alone, IC50 value was 310.3 ± 32.6 µM	Int J Mol Sci. 2024 Oct 13;25(20):11015
A-431 (epidermoid carcinoma)	153.3 ± 43.1 µM (IC50)	72 hours	Evaluation of antiproliferative activity of niflumic acid alone, IC50 value was 153.3 ± 43.1 µM	Int J Mol Sci. 2024 Oct 13;25(20):11015
5637 (urinary bladder carcinoma)	103.5 ± 17.1 µM (IC50)	72 hours	Evaluation of antiproliferative activity of niflumic acid alone, IC50 value was 103.5 ± 17.1 µM	Int J Mol Sci. 2024 Oct 13;25(20):11015

Rat	Isolated mesenteric vascular bed	Perfusion	10 and 30 μM	15 minutes pre-exposure	Niflumic acid selectively inhibited noradrenaline- and 5-HT-induced pressor responses but did not affect KCl-induced pressor responses.	Br J Pharmacol. 1997 Mar;120(5):813-8
Mice	Kv1.1V408A/+ mouse model	Intraperitoneal injection	10 mg/kg	Single administration	NFA ameliorated the motor performance of Kv1.1V408A/+ mice, significantly reducing foot slips and missteps on both narrow beam and horizontal ladder tasks.	Proc Natl Acad Sci U S A. 2023 Aug;120(31):e2207978120
Mice	Kir6.2−/− mice	Pancreas perfusion	100 µM	Single administration	Niflumic acid almost completely blocked cAMP-induced glucose-stimulated insulin secretion	Diabetologia. 2009 May;52(5):863-72
Rats	Chronic hypoxia model	Lung perfusion	30 μM	Single administration	To evaluate the role of Cl? channels in NS1619-induced pulmonary vasodilation	Lung. 2014 Oct;192(5):811-7
Zebrafish	Zebrafish embryos	Bath application	500 µM	30 minutes	Niflumic acid treatment caused bilateral muscle contractions in response to tactile stimulation	Sci Rep. 2020 Aug 19;10(1):13999
Sprague Dawley rats	Steroid-induced Pneumocystis pneumonia model	Intraperitoneal injection	6 mg/kg/day	Once daily for 4 weeks	NFA caused a significant decrease in total mucus, MUC5AC and mCLCA3 and also, in Pneumocystis-associated inflammation. Most relevant, NFA treatment improved survival at 8 weeks of steroids.	Front Microbiol. 2019 Jul 5;10:1522

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CAS No.: 4394-00-7

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CAS No.: 4394-00-7

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Product Details of Niflumic Acid

Safety of Niflumic Acid

Isoform Comparison

Biological Activity

Protocol

References

Historical Records

Categories

Precautionary Statements-General

Prevention

Response

Storage

Disposal

Physical hazards

Health hazards

Environmental hazards

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Preparing Stock Solutions		1mg	5mg	10mg
Preparing Stock Solutions	1 mM 5 mM 10 mM	3.54mL 0.71mL 0.35mL	17.72mL 3.54mL 1.77mL	35.43mL 7.09mL 3.54mL
Dissolving Methods	Animal experiment Please choose the appropriate dissolution scheme according to your animal administration guide.For the following dissolution schemes, clear stock solution should be prepared according to in vitro experiments, and then cosolvent should be added in turn: in order to ensure the reliability of the experimental results, the clarified stock solution can be properly preserved according to the storage conditions; The working fluid for in vivo experiment is recommended to be prepared now and used on the same day; The percentage shown in front of the following solvent refers to the volume ratio of the solvent in the final solution; If precipitation or precipitation occurs in the preparation process, it can be assisted by heating and/or ultrasound. Protocol 1 Protocol 2

Precautionary Statements-General
Code	Phrase
P101	If medical advice is needed,have product container or label at hand.
P102	Keep out of reach of children.
P103	Read label before use
Prevention
Code	Phrase
P201	Obtain special instructions before use.
P202	Do not handle until all safety precautions have been read and understood.
P210	Keep away from heat/sparks/open flames/hot surfaces. - No smoking.
P211	Do not spray on an open flame or other ignition source.
P220	Keep/Store away from clothing/combustible materials.
P221	Take any precaution to avoid mixing with combustibles
P222	Do not allow contact with air.
P223	Keep away from any possible contact with water, because of violent reaction and possible flash fire.
P230	Keep wetted
P231	Handle under inert gas.
P232	Protect from moisture.
P233	Keep container tightly closed.
P234	Keep only in original container.
P235	Keep cool
P240	Ground/bond container and receiving equipment.
P241	Use explosion-proof electrical/ventilating/lighting/equipment.
P242	Use only non-sparking tools.
P243	Take precautionary measures against static discharge.
P244	Keep reduction valves free from grease and oil.
P250	Do not subject to grinding/shock/friction.
P251	Pressurized container: Do not pierce or burn, even after use.
P260	Do not breathe dust/fume/gas/mist/vapours/spray.
P261	Avoid breathing dust/fume/gas/mist/vapours/spray.
P262	Do not get in eyes, on skin, or on clothing.
P263	Avoid contact during pregnancy/while nursing.
P264	Wash hands thoroughly after handling.
P265	Wash skin thouroughly after handling.
P270	Do not eat, drink or smoke when using this product.
P271	Use only outdoors or in a well-ventilated area.
P272	Contaminated work clothing should not be allowed out of the workplace.
P273	Avoid release to the environment.
P280	Wear protective gloves/protective clothing/eye protection/face protection.
P281	Use personal protective equipment as required.
P282	Wear cold insulating gloves/face shield/eye protection.
P283	Wear fire/flame resistant/retardant clothing.
P284	Wear respiratory protection.
P285	In case of inadequate ventilation wear respiratory protection.
P231 + P232	Handle under inert gas. Protect from moisture.
P235 + P410	Keep cool. Protect from sunlight.
Response
Code	Phrase
P301	IF SWALLOWED:
P304	IF INHALED:
P305	IF IN EYES:
P306	IF ON CLOTHING:
P307	IF exposed:
P308	IF exposed or concerned:
P309	IF exposed or if you feel unwell:
P310	Immediately call a POISON CENTER or doctor/physician.
P311	Call a POISON CENTER or doctor/physician.
P312	Call a POISON CENTER or doctor/physician if you feel unwell.
P313	Get medical advice/attention.
P314	Get medical advice/attention if you feel unwell.
P315	Get immediate medical advice/attention.
P320
P302 + P352	IF ON SKIN: wash with plenty of soap and water.
P321
P322
P330	Rinse mouth.
P331	Do NOT induce vomiting.
P332	IF SKIN irritation occurs:
P333	If skin irritation or rash occurs:
P334	Immerse in cool water/wrap n wet bandages.
P335	Brush off loose particles from skin.
P336	Thaw frosted parts with lukewarm water. Do not rub affected area.
P337	If eye irritation persists:
P338	Remove contact lenses, if present and easy to do. Continue rinsing.
P340	Remove victim to fresh air and keep at rest in a position comfortable for breathing.
P341	If breathing is difficult, remove victim to fresh air and keep at rest in a position comfortable for breathing.
P342	If experiencing respiratory symptoms:
P350	Gently wash with plenty of soap and water.
P351	Rinse cautiously with water for several minutes.
P352	Wash with plenty of soap and water.
P353	Rinse skin with water/shower.
P360	Rinse immediately contaminated clothing and skin with plenty of water before removing clothes.
P361	Remove/Take off immediately all contaminated clothing.
P362	Take off contaminated clothing and wash before reuse.
P363	Wash contaminated clothing before reuse.
P370	In case of fire:
P371	In case of major fire and large quantities:
P372	Explosion risk in case of fire.
P373	DO NOT fight fire when fire reaches explosives.
P374	Fight fire with normal precautions from a reasonable distance.
P376	Stop leak if safe to do so. Oxidising gases (section 2.4) 1
P377	Leaking gas fire: Do not extinguish, unless leak can be stopped safely.
P378
P380	Evacuate area.
P381	Eliminate all ignition sources if safe to do so.
P390	Absorb spillage to prevent material damage.
P391	Collect spillage. Hazardous to the aquatic environment
P301 + P310	IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician.
P301 + P312	IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell.
P301 + P330 + P331	IF SWALLOWED: Rinse mouth. Do NOT induce vomiting.
P302 + P334	IF ON SKIN: Immerse in cool water/wrap in wet bandages.
P302 + P350	IF ON SKIN: Gently wash with plenty of soap and water.
P303 + P361 + P353	IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower.
P304 + P312	IF INHALED: Call a POISON CENTER or doctor/physician if you feel unwell.
P304 + P340	IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing.
P304 + P341	IF INHALED: If breathing is difficult, remove victim to fresh air and keep at rest in a position comfortable for breathing.
P305 + P351 + P338	IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
P306 + P360	IF ON CLOTHING: Rinse Immediately contaminated CLOTHING and SKIN with plenty of water before removing clothes.
P307 + P311	IF exposed: call a POISON CENTER or doctor/physician.
P308 + P313	IF exposed or concerned: Get medical advice/attention.
P309 + P311	IF exposed or if you feel unwell: call a POISON CENTER or doctor/physician.
P332 + P313	IF SKIN irritation occurs: Get medical advice/attention.
P333 + P313	IF SKIN irritation or rash occurs: Get medical advice/attention.
P335 + P334	Brush off loose particles from skin. Immerse in cool water/wrap in wet bandages.
P337 + P313	IF eye irritation persists: Get medical advice/attention.
P342 + P311	IF experiencing respiratory symptoms: call a POISON CENTER or doctor/physician.
P370 + P376	In case of fire: Stop leak if safe to Do so.
P370 + P378	In case of fire:
P370 + P380	In case of fire: Evacuate area.
P370 + P380 + P375	In case of fire: Evacuate area. Fight fire remotely due to the risk of explosion.
P371 + P380 + P375	In case of major fire and large quantities: Evacuate area. Fight fire remotely due to the risk of explosion.
Storage
Code	Phrase
P401
P402	Store in a dry place.
P403	Store in a well-ventilated place.
P404	Store in a closed container.
P405	Store locked up.
P406	Store in corrosive resistant/ container with a resistant inner liner.
P407	Maintain air gap between stacks/pallets.
P410	Protect from sunlight.
P411
P412	Do not expose to temperatures exceeding 50 oC/ 122 oF.
P413
P420	Store away from other materials.
P422
P402 + P404	Store in a dry place. Store in a closed container.
P403 + P233	Store in a well-ventilated place. Keep container tightly closed.
P403 + P235	Store in a well-ventilated place. Keep cool.
P410 + P403	Protect from sunlight. Store in a well-ventilated place.
P410 + P412	Protect from sunlight. Do not expose to temperatures exceeding 50 oC/122oF.
P411 + P235	Keep cool.
Disposal
Code	Phrase
P501	Dispose of contents/container to ...
P502	Refer to manufacturer/supplier for information on recovery/recycling

Physical hazards
Code	Phrase
H200	Unstable explosive
H201	Explosive; mass explosion hazard
H202	Explosive; severe projection hazard
H203	Explosive; fire, blast or projection hazard
H204	Fire or projection hazard
H205	May mass explode in fire
H220	Extremely flammable gas
H221	Flammable gas
H222	Extremely flammable aerosol
H223	Flammable aerosol
H224	Extremely flammable liquid and vapour
H225	Highly flammable liquid and vapour
H226	Flammable liquid and vapour
H227	Combustible liquid
H228	Flammable solid
H229	Pressurized container: may burst if heated
H230	May react explosively even in the absence of air
H231	May react explosively even in the absence of air at elevated pressure and/or temperature
H240	Heating may cause an explosion
H241	Heating may cause a fire or explosion
H242	Heating may cause a fire
H250	Catches fire spontaneously if exposed to air
H251	Self-heating; may catch fire
H252	Self-heating in large quantities; may catch fire
H260	In contact with water releases flammable gases which may ignite spontaneously
H261	In contact with water releases flammable gas
H270	May cause or intensify fire; oxidizer
H271	May cause fire or explosion; strong oxidizer
H272	May intensify fire; oxidizer
H280	Contains gas under pressure; may explode if heated
H281	Contains refrigerated gas; may cause cryogenic burns or injury
H290	May be corrosive to metals
Health hazards
Code	Phrase
H300	Fatal if swallowed
H301	Toxic if swallowed
H302	Harmful if swallowed
H303	May be harmful if swallowed