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CAS No. :	14976-57-9
Formula :	C₂₅H₃₀ClNO₅
M.W :	459.96
SMILES Code :	CN1[C@@H](CCO[C@](C2=CC=CC=C2)(C3=CC=C(Cl)C=C3)C)CCC1.O=C(O)/C=C/C(O)=O
Synonyms :	HS-592 fumarate; Meclastine fumarate; Clemastine (fumarate)
MDL No. :	MFCD00137486
InChI Key :	PMGQWSIVQFOFOQ-YKVZVUFRSA-N
Pubchem ID :	5281069

GHS Pictogram:
Signal Word:	Warning
Hazard Statements:	H302
Precautionary Statements:	P280-P305+P351+P338

Microglial cells	20 ng/mL	1 hour	Clemastine inhibited the upregulation of IL-1β and NLRP3 in microglial cells induced by OGD.	PMC7023767
Plasmodium falciparum 3D7	10 μM	12-72 hours	To evaluate the inhibitory effect of clemastine on Plasmodium growth, results showed that 10 μM clemastine completely inhibited parasite loads in blood and liver cells.	PMC7084109
Huh-7 cells	20 µM	2 days	Screening for SARS-CoV-2 virus entry inhibitors, Clemastine showed the strongest anti-SARS2 activity (EC50=0.95 ± 0.83 µM).	PMC7594953
Vero E6 cells	10 µM	24 hours	Validation of Clemastine's inhibitory effect on native SARS-CoV-2 virus, showing significant inhibition of viral replication.	PMC7594953
Rat oligodendrocyte precursor cells	1 μM	3 days	To evaluate the effect of Clemastine on oligodendrocyte precursor cell differentiation and myelination. Results showed that Clemastine significantly enhanced oligodendrocyte differentiation and myelination.	PMC4830134
Oligodendrocyte precursor cells (OPCs)	1 µM	5 days	Promotes oligodendrocyte precursor cell maturation and central nervous system myelination	PMC10739966
Oligodendrocyte precursor cells (OPCs)	1 μM	7 days	Clemastine treatment reduced excess oligodendrocyte precursor cells and normalized oligodendrocyte density.	PMC10393406
Oligodendrocyte progenitor cells (OPCs)	20 ng/mL	7 days	Clemastine reversed the inhibition of IL-1β on OPC maturation and promoted the expression of MBP and CNPase.	PMC7023767
Oligodendrocyte precursor cells co-cultured with dorsal root ganglion neurons	500 nM		To evaluate the effect of Clemastine on myelination in a co-culture system. Results showed that Clemastine significantly promoted myelination.	PMC4830134
Huh7 hepatocytes	10 μM		To evaluate the cytotoxicity of clemastine on human hepatocytes, results showed that 10 μM clemastine did not exhibit cytotoxicity.	PMC7084109

Sprague-Dawley rats	Bilateral common carotid artery occlusion (BCCAO) model	Intraperitoneal injection	1 mg/kg	14 consecutive days	Clemastine improved hypomyelination in BCCAO rats and restrained the upregulation of IL-1β and NLRP3.	PMC7023767
Mice	Murine neonatal hypoxic injury model	Oral gavage	10 mg/kg	Once daily from postnatal Days 3–10	Promotes oligodendrocyte precursor cell differentiation, myelination, and functional recovery	PMC6394402
Mice	Experimental autoimmune encephalomyelitis (EAE)	Oral	10 mg/kg	Once daily for 28 days	To evaluate the remyelination efficacy of Clemastine in the EAE model, results showed that Clemastine improved VEP latency and increased the number of remyelinated axons in the optic nerve.	PMC10200282
Mice	Fear memory model	Intraperitoneal injection	10 mg/kg	Once daily from 3 days pre-conditioning to 21 days post-conditioning	Promotes new myelin formation, improves remote memory recall and promotes fear generalization	PMC7213814
Mice	Anks1b-deficient mouse models	Intraperitoneal injection	10 mg/kg	Daily for 14 days	Rescues deficits in social preference in Anks1b-deficient mice	PMC10739966
Mice	Cuprizone-mediated demyelination model	Gavage	10 mg/kg	Once daily for three weeks	Clemastine enhances oligodendrocyte gain during remyelination but is less effective than LL-341070, failing to fully eliminate the regeneration deficit after severe demyelination.	PMC11739692
C57BL/6J mice	Chronic microelectrode implantation model	Intraperitoneal injection	10 mg/kg	Daily administration for 16 weeks	Clemastine administration significantly elevated the signal detectability and quality, rescued the loss of multi-unit activity, and increased functional interlaminar connectivity over 16-weeks of implantation. Additionally, post-mortem immunohistochemistry showed that increased oligodendrocyte density and myelination coincided with increased survival of both excitatory and inhibitory neurons near the implant.	PMC10528716
Mice	Pitt–Hopkins syndrome mouse model	Intraperitoneal injection	10 mg/kg	Once daily for 14 days	Clemastine treatment normalized oligodendrocyte precursor cell and oligodendrocyte density and increased the number of axons undergoing myelination.	PMC10393406
Rat	Neonatal hypoxic-ischemic brain injury model	Intraperitoneal injection	10 mg/kg	Once daily for 6 consecutive days	Clemastine promotes oligodendrocyte proliferation through the MAPK/ERK pathway, reduces white matter injury, and exhibits neuroprotective effects.	PMC11311837
Mice	Chronic hypoxia model	Oral gavage	10 mg/kg per day	Once daily from P3 to P10	Enhancing myelination and promoting functional recovery	PMC6170028
C57BL/6 mice	Cuprizone-induced mouse model of demyelination	Oral	10 mg/kg per day	Daily for 3 weeks	Clemastine treatment greatly enhanced myelin repair in the demyelinated regions with increased mature oligodendrocytes (APC-positive) and myelin basic protein. More importantly, compared to vehicle, clemastine treatment rescued the schizophrenia-like behavioral changes in the open field test and the Y-maze, suggesting a beneficial effect via promoting myelin repair.	PMC5563681
Mice	Toxic injury model in spinal cord white matter tracts	Oral gavage	10 mg/kg/day	Once daily for 14 days	To evaluate the effect of Clemastine on remyelination. Results showed that Clemastine significantly accelerated the kinetics of remyelination and reduced the proportion of unmyelinated axons.	PMC4830134
Mice	C57BL/6 mice	Oral	10 mg/kg/day	Once daily for 4 months	Enhanced myelination and improved spatial memory in aged mice	PMC7306053
Mice	APP/PS1 transgenic mouse model	Oral	10 mg/kg/day	Daily for 3 months	Enhancing myelination to improve memory-related task performance and hippocampal sharp wave ripples in APP/PS1 mice	PMC8298291
Plasmodium berghei ANKA	Liver-stage malaria model	Not specified	10 μM	Not specified	To evaluate the inhibitory effect of clemastine on liver-stage Plasmodium, results showed that 10 μM clemastine completely inhibited parasite loads in liver cells.	PMC7084109
Xenopus laevis tadpoles	Tg(mbp:GFP-NTR) transgenic model	Water solution administration	200 nM	3 days	To evaluate the effect of Clemastine on promoting remyelination, results showed that the number of GFP+ oligodendrocytes in the clemastine-treated group was 1.5-fold higher than the control group, and the visual avoidance index improved by 1.4-fold.	PMC10232271

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CAS No.: 14976-57-9

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CAS No.: 14976-57-9

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Bio Calculators
Preparing Stock Solutions		1mg	5mg	10mg
Preparing Stock Solutions	1 mM 5 mM 10 mM	2.17mL 0.43mL 0.22mL	10.87mL 2.17mL 1.09mL	21.74mL 4.35mL 2.17mL
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 The prepared working fluid is recommended to be prepared now and used up as soon as possible in a short period of time. 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

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