[ CAS No. 108-26-9 ] {[proInfo.proName]}

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2D 3D

Structure of 108-26-9 * Storage: {[proInfo.prStorage]}

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Quality Control of [ 108-26-9 ]

COA NMR CNMR HPLC LC-MS

Related Doc. of [ 108-26-9 ]

SDS Specification

Alternatived Products of [ 108-26-9 ]

Product Details of [ 108-26-9 ]

CAS No. :	108-26-9	MDL No. :	MFCD00020699
Formula :	C₄H₆N₂O	Boiling Point :	No data available
Linear Structure Formula :	C₃H₃N₂(CH₃)(O)	InChI Key :	NHLAPJMCARJFOG-UHFFFAOYSA-N
M.W :	98.10	Pubchem ID :	7920
Synonyms :

Calculated chemistry of [ 108-26-9 ] Expand+

Physicochemical Properties

Num. heavy atoms :	7
Num. arom. heavy atoms :	0
Fraction Csp3 :	0.5
Num. rotatable bonds :	0
Num. H-bond acceptors :	2.0
Num. H-bond donors :	1.0
Molar Refractivity :	33.16
TPSA :	41.46 ?2

Pharmacokinetics

GI absorption :	High
BBB permeant :	No
P-gp substrate :	No
CYP1A2 inhibitor :	No
CYP2C19 inhibitor :	No
CYP2C9 inhibitor :	No
CYP2D6 inhibitor :	No
CYP3A4 inhibitor :	No
Log Kp (skin permeation) :	-7.23 cm/s

Lipophilicity

Log Po/w (iLOGP) :	0.94
Log Po/w (XLOGP3) :	-0.47
Log Po/w (WLOGP) :	-0.88
Log Po/w (MLOGP) :	-0.49
Log Po/w (SILICOS-IT) :	1.27
Consensus Log Po/w :	0.08

Druglikeness

Lipinski :	0.0
Ghose :	None
Veber :	0.0
Egan :	0.0
Muegge :	2.0
Bioavailability Score :	0.55

Water Solubility

Log S (ESOL) :	-0.15
Solubility :	69.1 mg/ml ; 0.704 mol/l
Class :	Very soluble
Log S (Ali) :	0.07
Solubility :	114.0 mg/ml ; 1.16 mol/l
Class :	Highly soluble
Log S (SILICOS-IT) :	-0.99
Solubility :	10.1 mg/ml ; 0.103 mol/l
Class :	Soluble

Medicinal Chemistry

PAINS :	0.0 alert
Brenk :	0.0 alert
Leadlikeness :	1.0
Synthetic accessibility :	2.46

Safety of [ 108-26-9 ]

Signal Word:	Warning	Class:
Precautionary Statements:	P261-P305+P351+P338	UN#:
Hazard Statements:	H315-H319-H335	Packing Group:
GHS Pictogram:

Application In Synthesis of [ 108-26-9 ]

* All experimental methods are cited from the reference, please refer to the original source for details. We do not guarantee the accuracy of the content in the reference.

Downstream synthetic route of [ 108-26-9 ]

[ 108-26-9 ] Synthesis Path-Downstream 1~3

1
[ 108-24-7 ]
[ 122-51-0 ]
[ 108-26-9 ]
[ 13214-64-7 ]
<i>N</i>-(1-acetyl-3-methyl-6-oxo-1,6-dihydro-pyrano[2,3-<i>c</i>]pyrazol-5-yl)-4-methoxy-benzamide [ No CAS ]

Reference： [1]Synthetic Communications,2004,vol. 34,p. 3293 - 3302

2
[ 399-25-7 ]
[ 108-26-9 ]
C₁₂H₁₂FN₃O₃ [ No CAS ]
C₁₂H₁₂FN₃O₃ [ No CAS ]

Yield	Reaction Conditions	Operation in experiment
	With C33H30F6N4O3; In dichloromethane; at 20℃; for 24h;Inert atmosphere;	General procedure: To a solution of nitroolefin 3 (0.33 mmol) in CH2Cl2 (1.5 ml) was added bifunctional catalyst 1i (2 mg,0.0033 mmol, 1 mol %) and the mixture was stirred for 5 min under N2 atmosphere. Then pyrazolin-5-one 2 (0.4 mmol) was added to the mixture. Upon consumption of nitroolefin substrate (monitored by TLC), the reaction mixture was concentrated and purified by silica gel column chromatography to afford the conjugate addition products 4.

Reference： [1]Tetrahedron Letters,2016,vol. 57,p. 1227 - 1231

3
[ 2737-22-6 ]
[ 108-26-9 ]
C₁₁H₇Br₃N₂O₂ [ No CAS ]

Yield	Reaction Conditions	Operation in experiment
	With acetic acid; In dimethyl sulfoxide; at 55℃; for 3h;Microwave irradiation;	General procedure: All reactions were carried out in PCR tubes at 50 μL scale. The reactantswere dissolved in DMSO to a final concentration of 40 mM (1.0equiv), and 0.3 μL glacial acetic acid (2.0 equiv) was added as a catalyst.The reaction mixtures were heated in a real-time PCR detection systems(Bio-Rad, CFX96) at 55 for 3 h,followed by cooing to roomtemperature.

Reference： [1]Bioorganic Chemistry,2021,vol. 115

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Isomers

Technical Information

? Acyl Group Substitution ? Chan-Lam Coupling Reaction ? Complex Metal Hydride Reductions ? Hydride Reductions ? Lawesson's Reagent ? Preparation of Amines ? Reactions of Amines ? Specialized Acylation Reagents-Carbodiimides and Related Reagents ? Specialized Acylation Reagents-Ketenes

Historical Records

Related Functional Groups of
[ 108-26-9 ]

Amides

[ 137-44-0 ]

1H-Pyrazol-5(4H)-one

Similarity: 0.86

[ 5157-08-4 ]

6-Methyl-4,5-dihydropyridazin-3(2H)-one

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[ 51395-52-9 ]

4-Bromo-3-methyl-1H-pyrazol-5(4H)-one

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[ 6126-22-3 ]

3-Amino-1H-pyrazol-5(4H)-one

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[ 10234-66-9 ]

1-Methyl-1H-pyrazol-5(4H)-one

Similarity: 0.70

Related Parent Nucleus of
[ 108-26-9 ]

Pyrazoles

[ 137-44-0 ]

1H-Pyrazol-5(4H)-one

Similarity: 0.86

[ 51395-52-9 ]

4-Bromo-3-methyl-1H-pyrazol-5(4H)-one

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[ 6126-22-3 ]

3-Amino-1H-pyrazol-5(4H)-one

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[ 10234-66-9 ]

1-Methyl-1H-pyrazol-5(4H)-one

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Ethyl 5-oxo-4,5-dihydro-1H-pyrazole-3-carboxylate

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Ghs Precautionary Statements

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Code	Phrase
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P103	Read label before use
Prevention
Code	Phrase
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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
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P233	Keep container tightly closed.
P234	Keep only in original container.
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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.
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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
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P401
P402	Store in a dry place.
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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
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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
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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
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H301	Toxic if swallowed
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Environmental hazards
Code	Phrase
H400	Very toxic to aquatic life
H401	Toxic to aquatic life
H402	Harmful to aquatic life
H410	Very toxic to aquatic life with long-lasting effects
H411	Toxic to aquatic life with long-lasting effects
H412	Harmful to aquatic life with long-lasting effects
H413	May cause long-lasting harmful effects to aquatic life
H420	Harms public health and the environment by destroying ozone in the upper atmosphere

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[ CAS No. 108-26-9 ] {[proInfo.proName]}

Quality Control of [ 108-26-9 ]

Related Doc. of [ 108-26-9 ]

Product Details of [ 108-26-9 ]

Calculated chemistry of [ 108-26-9 ] Expand+

Physicochemical Properties

Pharmacokinetics

Lipophilicity

Druglikeness

Water Solubility

Medicinal Chemistry

Safety of [ 108-26-9 ]

Application In Synthesis of [ 108-26-9 ]

[ 108-26-9 ] Synthesis Path-Downstream 1~3

Technical Information

Related Functional Groups of [ 108-26-9 ]

Amides

Related Parent Nucleus of [ 108-26-9 ]

Pyrazoles

Precautionary Statements-General

Prevention

Response

Storage

Disposal

Physical hazards

Health hazards

Environmental hazards

Inquiry

Related Functional Groups of
[ 108-26-9 ]

Related Parent Nucleus of
[ 108-26-9 ]