Pharmacopoeial impurityPhenylbutazone EP Impurity ACat. No. P-P091-002CAS 3583-64-0
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Active ingredient · Phenylbutazone family
Pharmaceutical analytical standardPhenylbutazone
Synonyms: 4-butyl-1,2-diphenylpyrazolidine-3,5-dione, Butapirazol, Butadion, Butazolidin, Butacote, Flexazone, Azolid, Butazolidine, Ecobutazone, Fenibutazona, Fenilbutazona, Fenylbutazon, Intrabutazone, Artrizin, Butadiona, Diphebuzol, Fenibutol, Intrazone, Phebuzine, Butoz, Buzon, Equipalazone, Alkabutazona, Alqoverin, Anuspiramin, Arthrizon, Artrizone, Bunetzone, Butacompren, Butagesic, Butalgina, Butalidon, Butapirazole, Butarecbon, Butartril, Butartrina, Butidiona, Butylpyrin, Buvetzone, Chembutazone, Digibutina, Diossidone, Eributazone, Fenibutal, Fenibutasan, Fenilbutina, Fenilbutine, Fenilidina, Mephabutazon, Mephabutazone, Phenbutazol, Phenopyrine, Phenyzone, Praecirheumin, Pyrabutol, Alindor, Anerval, Anpuzone, Artropan, Azobutyl, Benzone, Betazed, Bizolin, Butaluy, Butazina, Butazona, Elmedal, Febuzina, Fenartil, Fenotone, Nadazone, Reumazin, Reumuzol, Robizone, Zolaphen, Busone, Butone, Diozol, Kadol, Lingel, Reudo, Reudox, Uzone, Bute, Butiwas-Simple, Equi bute, Exrheudon N, Robizone-V, Shigrodin, Tevcodyne, Ia-But, Pirarreumol B, Bizolin 200, Butadionum, Schemergen, Butatron, Butazone, Phenyzene, Tencodyne, Ticinil, Ambene, Esteve, Fenilbutazone, NSC 25134, Pributazone, Superiorbute, Butaject, Butequine, Equiphar, VetriBute, Butatron Gel, Pro-Bute, Bizolin 1-G, Butazolidin Granules, Tevcodyne Injectable, Equizone 100, Equizone, Phenylbute, Equizone 50/100, Bizolin-100, Bizolin-200, Butazolidin, Butazolidin Paste, Bute, Phenylbute Paste, Phenylzone Paste, Butapyrazole, Scanbutazone, Intalbut, Ipsoflame, Malgesic, Merizone, Nadozone, Novophenyl, Phebuzin, Phenylbutaz, Pyrazolidin, Rectofasa, Reumasyl, Reumazol, Reupolar, Rubatone, Antadol, Reumune, Neo-zoline, Phenyl-Mobuzon, Robizon-V, Butaphen, Azdid, Schemergin, Wescozone, Tazone, Phen-Buta-Vet, Therazone, Todalgil, Zolidinum, Tetnor, Usaf ge-15, Fenilbutazon, Component of Azolid-A, Alkazone, Phenogel, Phen-Buta
- Cat. No.
- P-P091-001
- CAS
- 50-33-9
- Alternative CAS
- 129-18-0 (sodium salt)
- 2504203-29-4 (sodium salt)
- 102129-19-1 (potassium salt)
- 102129-17-9 (lithium salt)
- 4297-92-1 (alternative CAS, same compound)
- Formula
- C19H20N2O2
- Molecular weight
- 308.38 g/mol
- Category
- Active ingredient (API)
A non-steroidal anti-inflammatory drug derived from pyrazolidine, introduced for human use in 1949 against rheumatoid arthritis and gout; it is also used in veterinary medicine.
Did you know?In horses it is used for sprains, tendinitis, joint pain, arthritis and laminitis; its main metabolite, oxyphenbutazone, differs from it by a single hydroxyl group.
The two levels compared
| Level 1 Mass balance | Level 2 Mass balance + qNMR | |
|---|---|---|
| Identity (IR, MS, 1H and 13C-NMR; peptides: ESI-MS, MALDI-TOF and IR) | ✓ | ✓ |
| HPLC purity (min. 95%) | ✓ | ✓ |
| Content by mass balance (min. 90%; peptides: for information only)* | ✓ | ✓ |
| Content verified by qNMR (small molecules only) | · | ✓ |
| Suitable to qualify it as an in-house primary standard (ICH Q7) | · | ✓ |
* Mass balance is performed on every molecule. The only exceptions are cases where the chemistry of the molecule prevents it, for example oils and highly volatile substances, on which some of the required measurements cannot be made: in those cases the CoA states how the content was assigned.
What you receive
The analytical standard
Shipped under controlled temperature when the molecule requires it.
Certificate of analysis (CoA)
For every lot: identity, purity and assay, with the supporting spectra and chromatograms.
Safety data sheet (SDS)
Sent with every order.
Tracked shipment
Follow your shipment live, from our warehouse to your lab.
Pharmacopoeial standards available
The official European Pharmacopoeia standards for this molecule, supplied with EDQM documentation.
- Phenylbutazone CRSEP P1200000
More products in the Phenylbutazone family
Pharmacopoeial impurityPhenylbutazone EP Impurity ACat. No. P-P091-002CAS 3583-64-0
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Pharmacopoeial impurityPhenylbutazone EP Impurity CCat. No. P-P091-004CAS 122-66-7
Pharmacopoeial impurityPhenylbutazone EP Impurity DCat. No. P-P091-005CAS 103-33-3
Pharmacopoeial impurityPhenylbutazone EP Impurity E DihydrochlorideCat. No. P-P091-006CAS 531-85-1
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Impurity2-oxo-N,N'-diphenylhexanehydrazideCat. No. P-P091-008CAS 30923-77-4Frequently asked questions
Is mass balance always performed?
Yes, on every molecule. The only exceptions are cases where the chemistry of the molecule prevents it: for example oils and highly volatile substances, on which some measurements (such as thermogravimetry) cannot be made. In those cases the CoA states which method was used to assign the content.
Can I ask for a different quantity?
Yes. The quantities are only suggestions: choose "Other" and enter the milligrams or grams you need.
Which level should I choose?
Level 1 is enough for most routine testing. Level 2 adds an independent qNMR content value and is meant for labs that need to qualify an in-house primary standard. For peptides and similar molecules, Level 2 is not available.
When will I get the quote?
Within 24 working hours, with price, availability and delivery time.
Need a molecule you cannot find?
Custom synthesis of impurities, metabolites and labelled compounds, with the same characterisation level.