5-Amino-1,2-dihydro-3H-pyrazol-3-one

Basic Information

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CAS Number

28491-52-3

Molecular Formula

C3H5N3O

Molecular Weight

99.09 g/mol

Chemical Classification

Basic Chemical Raw Materials Organic Chemicals Carboxylic Acids

Basic Chemical Raw Materials Organic Chemicals Amines

Basic Chemical Raw Materials Organic Chemicals Heterocyclic Compounds

Pharmaceutical Chemicals Pharmaceutical Intermediates Heterocyclic Intermediates

Fine Chemicals Dyes and Pigments Organic Dyes

Water Treatment Chemicals Coagulants and Flocculants Inorganic Coagulants

Basic Physical Properties

Melting Point

204℃

Boiling Point

479.5°C at 760 mmHg

SMILES

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C1=C(NNC1=O)N

InChI

InChI=1S/C3H5N3O/c4-2-1-3(7)6-5-2/h1H,(H4,4,5,6,7)

InChIKey

QZBGOTVBHYKUDS-UHFFFAOYSA-N

LogP

-0.7148000000000003

Topological Polar Surface Area

74.67 Å²

Hydrogen Bond Donor/Acceptor

4 / 4

Complexity

128

Safety Information

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Hazard Statement

H302 Harmful if swallowed
Acute toxicity, oral

H315 Causes skin irritation
Skin corrosion/irritation

H319 Causes serious eye irritation
Serious eye damage/eye irritation

H332 Harmful if inhaled
Acute toxicity, inhalation

H335 May cause respiratory irritation
Specific target organ toxicity, single exposure; Respiratory tract irritation

Synonyms & References

English

STR05383
5-amino-2,3-dihydro-1H-pyrazol-3-one
AB05046
NSC60188
AKOS005443637
28491-52-3
3-Amino-1H-pyrazol-5-ol
3-Amino-5-hydroxypyrazole
53666-79-8
FT-0696112
NS00057838
EN300-33948
3-Pyrazolin-5-one, 3-amino-
5-azanyl-1,2-dihydropyrazol-3-one
PB47546
MFCD00204482
145092-03-1
3-Amino-5-oxo-4,5-dihydropyrazole
NSC-60188
CS-W005676
5-amino-1H-pyrazol-3-ol
5-amino-2H-pyrazol-3-ol
BP-11047
A8500
F31400
3-Amino-1,2-dihydropyrazol-5-one
3-amino-5-hydroxy-pyrazole
5-Imino-2,5-dihydro-1H-pyrazol-3-ol
CS-0166925
AMY11951
5-amino-1,2-dihydropyrazol-3-one

MDL Number

MFCD00022384

Customs Code

2933199090

FAQ

What is 5-Amino-1,2-dihydro-3H-pyrazol-3-one (CAS: 28491-52-3)?

5-Amino-1,2-dihydro-3H-pyrazol-3-one is an organic compound with the CAS number 28491-52-3. It is a heterocyclic compound with a pyrazole ring structure. It is used in various applications such as pharmaceuticals, research, and other chemical syntheses.

What are the main uses of 5-Amino-1,2-dihydro-3H-pyrazol-3-one (CAS: 28491-52-3)?

5-Amino-1,2-dihydro-3H-pyrazol-3-one is primarily used in the pharmaceutical industry for intermediate steps in drug synthesis. It is also used in research for synthesizing other organic compounds and as a building block for further chemical modifications.

Is 5-Amino-1,2-dihydro-3H-pyrazol-3-one (CAS: 28491-52-3) safe?

5-Amino-1,2-dihydro-3H-pyrazol-3-one is generally regarded as safe for most applications, but it is important to follow safety guidelines during handling. It should be stored away from heat sources, and appropriate personal protective equipment should be used to prevent skin contact and inhalation.

How should 5-Amino-1,2-dihydro-3H-pyrazol-3-one (CAS: 28491-52-3) be stored?

5-Amino-1,2-dihydro-3H-pyrazol-3-one should be stored in a cool, dry place away from heat sources and direct sunlight. It should be kept in a tightly sealed container to prevent moisture and light exposure. Proper ventilation should be maintained during storage.