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Cas Database

Name	1-Methyl-1H-pyrazol-3-amine	EINECS	N/A
CAS No.	1904-31-0	Density	1.224 g/cm³
PSA	43.84000	LogP	0.58350
Solubility	Slightly soluble in water.	Melting Point	N/A
Formula	C₄H₇N₃	Boiling Point	231.414 °C at 760 mmHg
Molecular Weight	97.1197	Flash Point	93.756 °C
Transport Information	N/A	Appearance	Colorless to light yellow liquid
Safety	26-36/37/39	Risk Codes	22-36/37/38
Molecular Structure		Hazard Symbols	Xn，Xi
Synonyms	1-methyl-1H-pyrazol-3-amine;	Article Data	11

1-Methyl-1H-pyrazol-3-amine Synthetic route

: 54210-32-1
1-methyl-3-nitro-1H-pyrazole

A: 132038-69-8
1,1'-dimethyl-3-azoxypyrazole

B: 1904-31-0
methyl-1 amino-3 pyrazole

Conditions

Conditions	Yield
With hydrazine hydrate; nickel In ethanol Heating;	A 54% B 7.1 g

: 75092-34-1
4-iodo-1-methyl-3-nitro-1H-pyrazole

: 1904-31-0
methyl-1 amino-3 pyrazole

Conditions

Conditions	Yield
With hydrogenchloride; tin(ll) chloride In water at 30℃; for 2h; Reduction;	51%

: 91027-92-8
N-(1-methyl-3-pyrazolyl)-acetoacetamide

A: 73810-75-0
2,4-dimethyl-2H-pyrazolo<3,4-b>pyridin-6(7H)-one

B: 1904-31-0
methyl-1 amino-3 pyrazole

Conditions

Conditions	Yield
With hydrogenchloride In ethanol for 3h; Heating;	A 21% B 15%

: 54210-32-1
1-methyl-3-nitro-1H-pyrazole

: 1904-31-0
methyl-1 amino-3 pyrazole

Conditions

Conditions	Yield
With hydrogenchloride; tin(ll) chloride Reduction;
With hydrogen In methanol for 3h;

: 3282-30-2
pivaloyl chloride

: 1904-31-0
methyl-1 amino-3 pyrazole

: 1135343-82-6
C9H15N3O

Conditions

Conditions	Yield
With dmap; triethylamine In dichloromethane at 0 - 20℃;	100%

: 75-36-5
acetyl chloride

: 1904-31-0
methyl-1 amino-3 pyrazole

: N-(1-methyl-1H-pyrazol-3-yl)-acetamide hydrochlorid

Conditions

Conditions	Yield
In tetrahydrofuran at 20℃; for 2h;	100%
In tetrahydrofuran at 0 - 20℃; for 2h;	100%

: 2489-52-3
3-(chlorosulfonyl)benzenesulfonyl fluoride

: 1904-31-0
methyl-1 amino-3 pyrazole

: 3-(N-(1-methyl-1H-pyrazol-3-yl)sulfamoyl)benzene-1-sulfonyl fluoride

Conditions

Conditions	Yield
With pyridine In chloroform at 20℃; for 48h; chemoselective reaction;	99%

: 4-(chlorosulfonyl)benzenesulfonyl fluoride

: 1904-31-0
methyl-1 amino-3 pyrazole

: C10H10FN3O4S2

Conditions

Conditions	Yield
With pyridine In chloroform at 20℃; for 48h; chemoselective reaction;	99%

: 106-39-8
bromochlorobenzene

: 1904-31-0
methyl-1 amino-3 pyrazole

: N-(4-chlorophenyl)-1-methyl-1H-pyrazol-3-amine

Conditions

Conditions	Yield
With copper(l) iodide; N-(2,6-dimethylphenyl)-6-hydroxypicolinamide; potassium carbonate In dimethyl sulfoxide at 110℃;	99%

: 110-13-4
2,5-hexanedione

: 1904-31-0
methyl-1 amino-3 pyrazole

: 34605-66-8
3-(2,5-dimethyl-1H-pyrrol-1-yl)-1-methyl-1H-pyrazole

Conditions

Conditions	Yield
toluene-4-sulfonic acid In toluene for 4h; Reflux;	98%
With acetic acid In toluene at 155℃;	98.1%
With toluene-4-sulfonic acid In benzene at 115℃; for 4h;	94%

1-Methyl-1H-pyrazol-3-amine Chemical Properties

The molecular formula of 3-amino-1-methylpyrazole(1904-31-0) is C₄H₇N₃ and its formula weight is 97.12.
3-amino-1-methylpyrazole(1904-31-0) has a boiling point of 93 °C.
The chemical synonyms of 3-amino-1-methylpyrazole(1904-31-0) are 1-METHYL-1H-PYRAZOL-3-AMINE;1-METHYL-1H-PYRAZOL-3-YLAMINE;3-AMINO-1-METHYLPYRAZOLE;AKOS B014443;BUTTPARK 83\09-99;ART-CHEM-BB B014443;1-methyl-3-aminopyrazole;3-Amino-1-methyl-1H-pyrazole
The molecular structure of 3-amino-1-methylpyrazole(1904-31-0):

1-Methyl-1H-pyrazol-3-amine Safety Profile

Hazard Codes Xn,Xi
Risk Statements 22-36/37/38
Safety Statements 26-36/37/39
Hazard Note Irritant

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