Shipping to 128 countriesCOA and SDS with every lotQuotes within one business day
Bulk CASAccount
API Impurities

4,4-Dibromo-2,4-dihydro-5-methyl-3H-pyrazol-3-one

Reference StandardAvailable on request

Order 4,4-Dibromo-2,4-dihydro-5-methyl-3H-pyrazol-3-one (CAS 33549-66-5) online at Zemixal: C4H4Br2N2O, COA and SDS with every lot, worldwide shipping.

Pack sizes
4,4-Dibromo-2,4-dihydro-5-methyl-3H-pyrazol-3-one chemical structure
CAS number33549-66-5
FormulaC4H4Br2N2O
Molar mass255.9 g/mol
Physical formSolid
HS code38229090
InChIKeyQQQQLBQGDDSBCA-UHFFFAOYSA-N
IUPAC name4,4-dibromo-3-methyl-1H-pyrazol-5-one

About 4,4-Dibromo-2,4-dihydro-5-methyl-3H-pyrazol-3-one

Researchers and plant chemists source 4,4-Dibromo-2,4-dihydro-5-methyl-3H-pyrazol-3-one from Zemixal for routine and specialised work. For your records (Reference Standard), the material is defined by CAS 33549-66-5, formula C4H4Br2N2O and molar mass 255.9 g/mol. It is handled as a solid.

Typical applications

  • Analytical method development
  • Method validation (AMV)
  • QC release testing
  • ANDA / DMF filings

Handling and storage

Classified under GHS with signal word Warning and hazard statements H315, H319 and H335. Read the SDS before first use.

Standard pack sizes are 10 mg, 25 mg, 50 mg and 100 mg, and custom quantities are quoted on request. Each lot travels with a certificate of analysis with characterisation data. Send an enquiry through the quote panel and you get a formal offer with Incoterms and delivery time.

Typical uses

  • Analytical method development
  • Method validation (AMV)
  • QC release testing
  • ANDA / DMF filings

Applications

Specifications and identifiers

Specifications of 4,4-Dibromo-2,4-dihydro-5-methyl-3H-pyrazol-3-one
Product name4,4-Dibromo-2,4-dihydro-5-methyl-3H-pyrazol-3-one
Catalogue numberZX-035822
CAS number33549-66-5
IUPAC name4,4-dibromo-3-methyl-1H-pyrazol-5-one
Molecular formulaC4H4Br2N2O
Molar mass255.9 g/mol
Exact mass255.867
GradeReference Standard
Physical formSolid
XLogP31.1
H-bond donors / acceptors1 / 2
Topological polar surface area41.5 Ų
HS code38229090
InChIKeyQQQQLBQGDDSBCA-UHFFFAOYSA-N
SMILESCC1=NNC(=O)C1(Br)Br
PubChem CID351503
Synonyms4,4-Dibromo-3-Methyl-2-Pyrazolin-5-one, 4,4-dibromo-3-methyl-1H-pyrazol-5(4H)-one, 4,4-Dibromo-5-methyl-2,4-dihydro-3H-pyrazol-3-one, 3H-Pyrazol-3-one, 4,4-dibromo-2,4-dihydro-5-methyl-, 4,4-dibromo-3-methylpyrazol-5-one, 2,4,10-Tribromo methyl benzoate, 4,4-Dibromo-3-methyl-2-pyrazolin-5-one, 98+%

Lot values are stated on the batch certificate of analysis. Ask for a typical COA with your quotation.

Safety and GHS hazards

GHS07 Irritant or harmful
Irritant or harmful

Signal word Warning

  • H315Causes skin irritation
  • H319Causes serious eye irritation
  • H335May cause respiratory irritation

Precautionary statements P261, P264, P264 + P265, P271, P280, P302 + P352, P304 + P340, P305 + P351 + P338, P319, P321, P332 + P317, P337 + P317, P362 + P364, P403 + P233, P405, P501

Classification summarised from public GHS notifications. It can vary with grade and concentration, so always follow the SDS supplied with your lot.

Pack sizes

Pack sizes of 4,4-Dibromo-2,4-dihydro-5-methyl-3H-pyrazol-3-one
10 mgQuoted on request
25 mgQuoted on request
50 mgQuoted on request
100 mgQuoted on request

Need a different size? Bulk drums and custom packing are quoted on request through the quote form on this page.

Questions about 4,4-Dibromo-2,4-dihydro-5-methyl-3H-pyrazol-3-one

Which CAS number identifies 4,4-Dibromo-2,4-dihydro-5-methyl-3H-pyrazol-3-one?
4,4-Dibromo-2,4-dihydro-5-methyl-3H-pyrazol-3-one is registered under CAS 33549-66-5. You may also see it listed as 4,4-Dibromo-3-Methyl-2-Pyrazolin-5-one, 4,4-dibromo-3-methyl-1H-pyrazol-5(4H)-one, 4,4-Dibromo-5-methyl-2,4-dihydro-3H-pyrazol-3-one. Our catalogue number for this item is ZX-035822.
What are the formula and molar mass of 4,4-Dibromo-2,4-dihydro-5-methyl-3H-pyrazol-3-one?
For 4,4-Dibromo-2,4-dihydro-5-methyl-3H-pyrazol-3-one, its formula is C4H4Br2N2O and its molar mass is 255.9 g/mol. The systematic (IUPAC) name is 4,4-dibromo-3-methyl-1H-pyrazol-5-one. InChIKey QQQQLBQGDDSBCA-UHFFFAOYSA-N lets you match it in any structure database.
What grade and pack sizes are available for 4,4-Dibromo-2,4-dihydro-5-methyl-3H-pyrazol-3-one?
This listing is Reference Standard grade. Standard packs are 10 mg, 25 mg, 50 mg, 100 mg. Larger quantities and custom packing can be quoted on request.
Which documents come with 4,4-Dibromo-2,4-dihydro-5-methyl-3H-pyrazol-3-one?
Each lot ships with a batch certificate of analysis and a 16-section GHS safety data sheet. A typical COA or specification sheet can be shared with the quotation before you order.
Can Zemixal ship 4,4-Dibromo-2,4-dihydro-5-methyl-3H-pyrazol-3-one to my country?
Yes. Because 4,4-Dibromo-2,4-dihydro-5-methyl-3H-pyrazol-3-one is classed as hazardous, it travels in UN-approved packaging as dangerous goods under IATA or IMDG rules, with the export paperwork your broker needs.

Related products

More in API Impurities

Have a list of compounds to price?

Paste up to 200 CAS numbers into Bulk CAS lookup, or send one enquiry for everything in your quote list. We reply with price, lead time and documents.

Compare 0 of 4Compare now