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Home/Compounds/Other/1-phenyl-3-pyrazolidinone
C9H10N2O
162.19 g/mol
OtherWarning

Phenidone

CAS92-43-3EC202-155-1
Category
Other
Compound Class
Heterocycle
Primary Use
Photographic developer

Phenidone is a chemical compound used as a photographic developer, known for producing non-staining, high-contrast images. It is commonly employed in black-and-white photography and film processing.

Photographic developer for black-and-white film and paperHigh-contrast photographic processing

Content scope: Information here supports chemical identification and industrial supply, research, and manufacturing contexts. It is not a therapeutic claim, medical advice, or drug-use instructions.

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Related Compounds

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Calcium supplement

ReferenceSame Category

Hexadecanoic acid, (1R)-1-(carboxymethyl)dodecyl ester

CAS93390-37-5

Lipid research compound

Referencesame scaffold

4-(hydroxymethyl)-4-methyl-1-phenylpyrazolidin-3-one

CAS13047-13-7

research compound

Referencesame scaffold

4-methyl-1-phenylpyrazolidin-3-one

CAS2654-57-1

photographic developing agent

Safety Reference

Harmful
Harmful
Environmental Hazard
Environmental Hazard
Warning
H302Harmful if swallowed
H411Toxic to aquatic life with long lasting effects

Customs Tariff Classification

The international HS code for Phenidone (CAS 92-43-3) is 2933.19.

HS code (international, 6-digit)

2933.19

EU CN code (8-digit)

2933 19 90

Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.

Identifiers
IUPAC Name

1-phenylpyrazolidin-3-one

InChIKey

CMCWWLVWPDLCRM-UHFFFAOYSA-N

SMILES

C1CN(NC1=O)C2=CC=CC=C2

Synonyms (18)
  • 1-PHENYL-3-PYRAZOLIDINONE
  • 1-Phenyl-3-oxopyrazolidine
  • 1-Phenyl-3-pyrazolidone
  • 1-Phenylpyrazolid-3-one
  • 1-phenylpyrazolidin-3-one
  • 2-Pyrazolin-3-ol, 1-phenyl-
  • 2-Pyrazolin-3-one, 1-phenyl-
  • 3-Pyrazolidinone, 1-phenyl-
  • Edaravone Impurity 25
  • Fenidon
  • N-phenylpyrazolidin-3-one
  • Phenidone
  • Phenidone A
  • Pyrazolidinone, 1-phenyl-

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