Feprazone

Feprazone
Systematic (IUPAC) name

4-(3-methylbut-2-enyl)-1,2-di(phenyl)pyrazolidine-3,5-dione
Clinical data
AHFS/Drugs.com	International Drug Names
Identifiers
ATC code	M02AA16
PubChem	CID 35455
ChemSpider	32612^Y
UNII	7BVX6J0CGR^Y
KEGG	D01305^Y
Chemical data
Formula	C₂₀H₂₀N₂O₂
Molecular mass	320.385 g/mol
SMILES O=C2N(c1ccccc1)N(C(=O)C2C\C=C(/C)C)c3ccccc3
InChI InChI=1S/C20H20N2O2/c1-15(2)13-14-18-19(23)21(16-9-5-3-6-10-16)22(20(18)24)17-11-7-4-8-12-17/h3-13,18H,14H2,1-2H3 ^Y Key:RBBWCVQDXDFISW-UHFFFAOYSA-N ^Y
Y (what is this?) (verify)

Feprazone (or prenazone) is a drug used for joint and muscular pain.^[1]

References

↑ Koyama, T.; Izawa, Y.; Wada, H.; Makita, T.; Hashimoto, Y.; Enomoto, M. (1982). "Toxicological aspects of feprazone, a new nonsteroidal anti-inflammatory drug". Toxicology and applied pharmacology 64 (2): 255–270. doi:10.1016/0041-008X(82)90222-8. PMID 7123554.

Non-steroidal anti-inflammatory drugs (NSAIDs) (primarily M01A and M02A, also N02BA)

Acetic acid derivatives
and related substances

Propionic acid derivatives
(profens)

N-Arylanthranilic acids
(fenamates)

Other

Items listed in bold indicate initially developed compounds of specific groups. ^#WHO-EM ^†Withdrawn drugs. ^‡Veterinary use medications.

Index of muscle

Description	Anatomy head neck arms chest and back diaphragm abdomen genital area legs Muscle tissue Physiology connective tissue

Disease	Myopathy Soft tissue Connective tissue Congenital abdomen muscular dystrophy Neoplasms and cancer Injury Symptoms and signs eponymous

Treatment	Procedures Drugs anti-inflammatory muscle relaxants

Topical products for joint and muscular pain (M02)

Anti-inflammatory
preparations,
non-steroids

Pyrazolidines	Phenylbutazone Mofebutazone Clofezone Oxyphenbutazone

Acetic acid derivatives	Tolmetin Diclofenac Fentiazac

Other	Benzydamine Etofenamate Piroxicam Felbinac Bufexamac Ketoprofen Bendazac Naproxen Ibuprofen Feprazone Niflumic acid Meclofenamic acid Flurbiprofen Suxibuzone Indometacin Nifenazone

Capsaicin derivatives

Other

Index of joint

Description	Anatomy head and neck cranial arms torso and pelvis legs bursae and sheathes Physiology

Disease	Arthritis acquired back childhood soft tissue Congenital Injury Symptoms and signs eponymous orthopaedic Examination

Treatment	Procedures Drugs rheumatoid arthritis gout topical analgesics