1260243-04-6|Ethyl 5-amino-1H-pyrazole-4-carboxylate| Ambeed

CAS No. :	1260243-04-6
Formula :	C₆H₉N₃O₂
M.W :	155.15
SMILES Code :	CCOC(=O)C1=C(N)NN=C1
MDL No. :	MFCD00114562
InChI Key :	YPXGHKWOJXQLQU-UHFFFAOYSA-N
Pubchem ID :	81472

Safety of [ 1260243-04-6 ]

GHS Pictogram:
Signal Word:	Warning
Hazard Statements:	H302-H315-H319-H332-H335
Precautionary Statements:	P280-P305+P351+P338-P310

Computational Chemistry of [ 1260243-04-6 ] Show Less

Physicochemical Properties

Num. heavy atoms	11
Num. arom. heavy atoms	5
Fraction Csp3	0.33
Num. rotatable bonds	3
Num. H-bond acceptors	3.0
Num. H-bond donors	2.0
Molar Refractivity	39.08
TPSA ? Topological Polar Surface Area: Calculated from Ertl P. et al. 2000 J. Med. Chem.	81.0 Å²

Lipophilicity

Log P_o/w (iLOGP)? iLOGP: in-house physics-based method implemented from Daina A et al. 2014 J. Chem. Inf. Model.	0.86
Log P_o/w (XLOGP3)? XLOGP3: Atomistic and knowledge-based method calculated by XLOGP program, version 3.2.2, courtesy of CCBG, Shanghai Institute of Organic Chemistry	0.64
Log P_o/w (WLOGP)? WLOGP: Atomistic method implemented from Wildman SA and Crippen GM. 1999 J. Chem. Inf. Model.	0.18
Log P_o/w (MLOGP)? MLOGP: Topological method implemented from Moriguchi I. et al. 1992 Chem. Pharm. Bull. Moriguchi I. et al. 1994 Chem. Pharm. Bull. Lipinski PA. et al. 2001 Adv. Drug. Deliv. Rev.	-0.18
Log P_o/w (SILICOS-IT)? SILICOS-IT: Hybrid fragmental/topological method calculated by FILTER-IT program, version 1.0.2, courtesy of SILICOS-IT, http://www.silicos-it.com	0.39
Consensus Log P_o/w? Consensus Log P_o/w: Average of all five predictions	0.38

Water Solubility

Log S (ESOL):? ESOL: Topological method implemented from Delaney JS. 2004 J. Chem. Inf. Model.	-1.34
Solubility	7.03 mg/ml ; 0.0453 mol/l
Class? Solubility class: Log S scale Insoluble < -10 < Poorly < -6 < Moderately < -4 < Soluble < -2 Very < 0 < Highly	Very soluble
Log S (Ali)? Ali: Topological method implemented from Ali J. et al. 2012 J. Chem. Inf. Model.	-1.92
Solubility	1.88 mg/ml ; 0.0121 mol/l
Class? Solubility class: Log S scale Insoluble < -10 < Poorly < -6 < Moderately < -4 < Soluble < -2 Very < 0 < Highly	Very soluble
Log S (SILICOS-IT)? SILICOS-IT: Fragmental method calculated by FILTER-IT program, version 1.0.2, courtesy of SILICOS-IT, http://www.silicos-it.com	-1.34
Solubility	7.04 mg/ml ; 0.0454 mol/l
Class? Solubility class: Log S scale Insoluble < -10 < Poorly < -6 < Moderately < -4 < Soluble < -2 Very < 0 < Highly	Soluble

Pharmacokinetics

GI absorption? Gatrointestinal absorption: according to the white of the BOILED-Egg	High
BBB permeant? BBB permeation: according to the yolk of the BOILED-Egg	No
P-gp substrate? P-glycoprotein substrate: SVM model built on 1033 molecules (training set) and tested on 415 molecules (test set) 10-fold CV: ACC=0.72 / AUC=0.77 External: ACC=0.88 / AUC=0.94	No
CYP1A2 inhibitor? Cytochrome P450 1A2 inhibitor: SVM model built on 9145 molecules (training set) and tested on 3000 molecules (test set) 10-fold CV: ACC=0.83 / AUC=0.90 External: ACC=0.84 / AUC=0.91	No
CYP2C19 inhibitor? Cytochrome P450 2C19 inhibitor: SVM model built on 9272 molecules (training set) and tested on 3000 molecules (test set) 10-fold CV: ACC=0.80 / AUC=0.86 External: ACC=0.80 / AUC=0.87	No
CYP2C9 inhibitor? Cytochrome P450 2C9 inhibitor: SVM model built on 5940 molecules (training set) and tested on 2075 molecules (test set) 10-fold CV: ACC=0.78 / AUC=0.85 External: ACC=0.71 / AUC=0.81	No
CYP2D6 inhibitor? Cytochrome P450 2D6 inhibitor: SVM model built on 3664 molecules (training set) and tested on 1068 molecules (test set) 10-fold CV: ACC=0.79 / AUC=0.85 External: ACC=0.81 / AUC=0.87	No
CYP3A4 inhibitor? Cytochrome P450 3A4 inhibitor: SVM model built on 7518 molecules (training set) and tested on 2579 molecules (test set) 10-fold CV: ACC=0.77 / AUC=0.85 External: ACC=0.78 / AUC=0.86	No
Log Kp (skin permeation)? Skin permeation: QSPR model implemented from Potts RO and Guy RH. 1992 Pharm. Res.	-6.79 cm/s

Druglikeness

Lipinski? Lipinski (Pfizer) filter: implemented from Lipinski CA. et al. 2001 Adv. Drug Deliv. Rev. MW ≤ 500 MLOGP ≤ 4.15 N or O ≤ 10 NH or OH ≤ 5	0.0
Ghose? Ghose filter: implemented from Ghose AK. et al. 1999 J. Comb. Chem. 160 ≤ MW ≤ 480 -0.4 ≤ WLOGP ≤ 5.6 40 ≤ MR ≤ 130 20 ≤ atoms ≤ 70	None
Veber? Veber (GSK) filter: implemented from Veber DF. et al. 2002 J. Med. Chem. Rotatable bonds ≤ 10 TPSA ≤ 140	0.0
Egan? Egan (Pharmacia) filter: implemented from Egan WJ. et al. 2000 J. Med. Chem. WLOGP ≤ 5.88 TPSA ≤ 131.6	0.0
Muegge? Muegge (Bayer) filter: implemented from Muegge I. et al. 2001 J. Med. Chem. 200 ≤ MW ≤ 600 -2 ≤ XLOGP ≤ 5 TPSA ≤ 150 Num. rings ≤ 7 Num. carbon > 4 Num. heteroatoms > 1 Num. rotatable bonds ≤ 15 H-bond acc. ≤ 10 H-bond don. ≤ 5	1.0
Bioavailability Score? Abbott Bioavailability Score: Probability of F > 10% in rat implemented from Martin YC. 2005 J. Med. Chem.	0.55

Medicinal Chemistry

PAINS? Pan Assay Interference Structures: implemented from Baell JB. & Holloway GA. 2010 J. Med. Chem.	0.0 alert
Brenk? Structural Alert: implemented from Brenk R. et al. 2008 ChemMedChem	0.0 alert: heavy_metal
Leadlikeness? Leadlikeness: implemented from Teague SJ. 1999 Angew. Chem. Int. Ed. 250 ≤ MW ≤ 350 XLOGP ≤ 3.5 Num. rotatable bonds ≤ 7	No; 1 violation:MW<1.0
Synthetic accessibility? Synthetic accessibility score: from 1 (very easy) to 10 (very difficult) based on 1024 fragmental contributions (FP2) modulated by size and complexity penaties, trained on 12'782'590 molecules and tested on 40 external molecules (r² = 0.94)	1.71

Application In Synthesis of [ 1260243-04-6 ]

* 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 [ 1260243-04-6 ]

[ 1260243-04-6 ] Synthesis Path-Downstream 1~2

1
[ 1001-26-9 ]
[ 1260243-04-6 ]
ethyl 5-oxo-4,5-dihydropyrazolo[1,5-a]pyrimidine-3-carboxylate [ No CAS ]

Yield	Reaction Conditions	Operation in experiment
92%	With caesium carbonate; In N,N-dimethyl-formamide; at 110℃; for 16h;	Cs2CO3 (64.20 g, 197.20 mmol) was added to a solution of ethyl 5-amino-1H-pyrazole- 4-carboxylate (20.40 g, 131.40 mmol) and ethyl-3-ethoxyacrylate (28.6 mL, 197.20 mmol) in DMF (250 mL). The reaction mixture was stirred at 110 °C for 16 h. The mixture was cooled to room temp and the pH was adjusted to 4 by the addition of AcOH (80 mL). The mixture was concentrated in vacuo and the residue partitioned between CH2Cl2 H2O (1000 mL, 1:1). The organic layer was separated and the aqueous layer was extracted with CH2Cl2 (3 X 500 mL). The combined organics were washed with brine, dried (MgS04) and concentrated. The crude residue was suspended in EtOH (300 mL) and heated to boiling. After cooling to room temperature the solid was collected by filtration, rinsed with EtOH, then Et20 and dried under vacuum to give ethyl 5-oxo-4,5-dihydropyrazolo[1,5-a]pyrimidine-3-carboxylate (25.16 g, 92 percent). MS (ESI) calcd for C9H9N3O3 (m/z): 207.06; found: 208 [M+H]
92%	With caesium carbonate; In N,N-dimethyl-formamide; at 110℃; for 16h;	Cs2CO3 (64.20 g, 197.20 mmol) was added to a solution of ethyl 5-amino-1H-pyrazole-4-carboxylate (20.40 g, 131.40 mmol) and ethyl-3-ethoxyacrylate (28.6 mL, 197.20 mmol) in DMF (250 mL). The reaction mixture was stirred at 110 °C for 16 h. The mixture was cooled to room temp and the pH was adjusted to 4 by the addition of AcOH (80 mL). The mixture was concentrated in vacuo and the residue partitioned between CH2Cl2/H2O (1000 mL, 1:1). The organic layer was separated and the aqueous layer was extracted with CH2Cl2 (3 X 500 mL). The combined organics were washed with brine, dried (MgSO4) and concentrated. The crude residue was suspended in EtOH (300 mL) and heated to boiling. After cooling to room temperature the solid was collected by filtration, rinsed with EtOH, then Et2O and dried under vacuum to give ethyl 5-oxo-4,5-dihydropyrazolo[1,5-a]pyrimidine-3-carboxylate (25.16 g, 92 percent). MS (ESI) calcd for C9H9N3O3 (m/z): 207.06; found: 208 [M+H].

References: [1]Patent: WO2013/59587,2013,A1 .Location in patent: Page/Page column 136.
[2]Patent: EP2768509,2017,B1 .Location in patent: Paragraph 0483; 0484.

2
[ 1001-26-9 ]
[ 1260243-04-6 ]
[ 926663-00-5 ]

Yield	Reaction Conditions	Operation in experiment
91%	With caesium carbonate; In N,N-dimethyl-formamide; at 100℃; for 2h;	To a mixture of ethyl 3-amino-1H-pyrazole-4-carboxylate (29) (30.0 g, 193 mmol) and <strong>[1001-26-9]ethyl 3-ethoxy-2-propenoate</strong> (cis- and trans-mixture, 41.9 mL, 290 mmol) in DMF(387 mL) was added cesium carbonate (113 g, 348 mmol). Themixture was stirred at 100°C for 2 h, diluted with water andthen acidified to pH ca. 5 with AcOH. The resulting solid wasfiltered by filtration, washed with water and dried to afford 30(36.4 g, 176 mmol, 91percent) as a beige solid. 1H-NMR (300 MHz,DMSO-d6) delta: 1.28 (3H, t, J=7.1 Hz), 4.28 (2H, q, J=7.1 Hz),6.15 (1H, d, J=7.9 Hz), 8.13 (1H, s), 8.57 (1H, d, J=7.9 Hz),11.73 (1H, br s).

References: [1]Chemical and Pharmaceutical Bulletin,2017,vol. 65,p. 1058 - 1077.

Historical Records

Technical Information

• Acyl Group Substitution • Bouveault-Blanc Reduction • Buchwald-Hartwig C-N Bond and C-O Bond Formation Reactions • Catalytic Hydrogenation • Chan-Lam Coupling Reaction • Complex Metal Hydride Reductions • Ester Cleavage • Hydride Reductions • Leuckart-Wallach Reaction • Mannich Reaction • Petasis Reaction • Preparation of Amines • Reactions of Amines • Reactions with Organometallic Reagents • Specialized Acylation Reagents-Carbodiimides and Related Reagents • Specialized Acylation Reagents-Vilsmeier Reagent • Ugi Reaction

Related Functional Groups of
[ 1260243-04-6 ]

Esters

A276564 [37622-90-5]

Ethyl 4-pyrazolecarboxylate

Similarity: 0.91

A165507 [51105-90-9]

Methyl 1H-pyrazole-4-carboxylate

Similarity: 0.88

A219718 [31037-02-2]

Ethyl 5-amino-1-methyl-1H-pyrazole-4-carboxylate

Similarity: 0.88

A129599 [110860-60-1]

Methyl 5-amino-1-methyl-1H-pyrazole-4-carboxylate

Similarity: 0.86

A107585 [85290-80-8]

Ethyl 1-methyl-1H-pyrazole-4-carboxylate

Similarity: 0.84

Amines

A219718 [31037-02-2]

Ethyl 5-amino-1-methyl-1H-pyrazole-4-carboxylate

Similarity: 0.88

A129599 [110860-60-1]

Methyl 5-amino-1-methyl-1H-pyrazole-4-carboxylate

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A116291 [1613191-73-3]

Allyl 3,5-diamino-1H-pyrazole-4-carboxylate

Similarity: 0.81

A203663 [6825-71-4]

Ethyl 3,5-diamino-1H-pyrazole-4-carboxylate

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A253134 [4058-91-7]

5-Amino-1-methyl-1H-pyrazole-4-carboxylic acid

Similarity: 0.80

Related Parent Nucleus of
[ 1260243-04-6 ]

Pyrazoles

A276564 [37622-90-5]

Ethyl 4-pyrazolecarboxylate

Similarity: 0.91

A165507 [51105-90-9]

Methyl 1H-pyrazole-4-carboxylate

Similarity: 0.88

A219718 [31037-02-2]

Ethyl 5-amino-1-methyl-1H-pyrazole-4-carboxylate

Similarity: 0.88

A129599 [110860-60-1]

Methyl 5-amino-1-methyl-1H-pyrazole-4-carboxylate

Similarity: 0.86

A107585 [85290-80-8]

Ethyl 1-methyl-1H-pyrazole-4-carboxylate

Similarity: 0.84

Precautionary Statements-General
Code	Phrase
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Prevention
Code	Phrase
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P210	Keep away from heat/sparks/open flames/hot surfaces. - No smoking.
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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
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Response
Code	Phrase
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P320
P302 + P352	IF ON SKIN: wash with plenty of soap and water.
P321
P322
P330	Rinse mouth.
P331	Do NOT induce vomiting.
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P337	If eye irritation persists:
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P340	Remove victim to fresh air and keep at rest in a position comfortable for breathing.
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P342	If experiencing respiratory symptoms:
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P376	Stop leak if safe to do so. Oxidising gases (section 2.4) 1
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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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Physical hazards
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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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H226	Flammable liquid and vapour
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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
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
H304	May be fatal if swallowed and enters airways
H305	May be harmful if swallowed and enters airways
H310	Fatal in contact with skin
H311	Toxic in contact with skin
H312	Harmful in contact with skin
H313	May be harmful in contact with skin
H314	Causes severe skin burns and eye damage
H315	Causes skin irritation
H316	Causes mild skin irritation
H317	May cause an allergic skin reaction
H318	Causes serious eye damage
H319	Causes serious eye irritation
H320	Causes eye irritation
H330	Fatal if inhaled
H331	Toxic if inhaled
H332	Harmful if inhaled
H333	May be harmful if inhaled
H334	May cause allergy or asthma symptoms or breathing difficulties if inhaled
H335	May cause respiratory irritation
H336	May cause drowsiness or dizziness
H340	May cause genetic defects
H341	Suspected of causing genetic defects
H350	May cause cancer
H351	Suspected of causing cancer
H360	May damage fertility or the unborn child
H361	Suspected of damaging fertility or the unborn child
H361d	Suspected of damaging the unborn child
H362	May cause harm to breast-fed children
H370	Causes damage to organs
H371	May cause damage to organs
H372	Causes damage to organs through prolonged or repeated exposure
H373	May cause damage to organs through prolonged or repeated exposure
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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Product Details of [ 1260243-04-6 ]

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Medicinal Chemistry

Application In Synthesis of [ 1260243-04-6 ]

[ 1260243-04-6 ] Synthesis Path-Downstream 1~2

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Technical Information

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Related Functional Groups of
[ 1260243-04-6 ]

Esters

Amines

Related Parent Nucleus of
[ 1260243-04-6 ]

Pyrazoles

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Product Details of [ 1260243-04-6 ]

Safety of [ 1260243-04-6 ]

Computational Chemistry of [ 1260243-04-6 ] Show Less

Physicochemical Properties

Lipophilicity

Water Solubility

Pharmacokinetics

Druglikeness

Medicinal Chemistry

Application In Synthesis of [ 1260243-04-6 ]

[ 1260243-04-6 ] Synthesis Path-Downstream 1~2

Related Products

Historical Records

Technical Information

Categories

Related Functional Groups of [ 1260243-04-6 ]

Esters

Amines

Related Parent Nucleus of [ 1260243-04-6 ]

Pyrazoles

Precautionary Statements-General

Prevention

Response

Storage

Disposal

Physical hazards

Health hazards

Environmental hazards

Inquiry

Molarity Calculator

Total Compounds Calculator

Dissolution Calculator

Related Functional Groups of
[ 1260243-04-6 ]

Related Parent Nucleus of
[ 1260243-04-6 ]