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Sulfadimidine

Sulfamethazine, 4-amino-N-(4,6-dimethyl-2-pyrimidinyl)benzenesulfonamide · CAS 57-68-1

Veterinary Veterinary grade / EP (vet) CoA per batchSDSMRL guidance note

A long-established sulphonamide, usually sold with trimethoprim at 5:1. The specification is dominated by the 4-aminobenzenesulfonamide hydrolysis product, which climbs with storage temperature.

Part of the veterinary antibacterial line. Withdrawal periods and MRL guidance are part of the supply conversation, not an afterthought.

Identity

Catalogue no.BP-VET-015
CAS number57-68-1
Molecular formulaC12H14N4O2S
Molecular weight278.33 g/mol
HS code2935.00
SynonymsSulfamethazine, 4-amino-N-(4,6-dimethyl-2-pyrimidinyl)benzenesulfonamide
Product lineVeterinary APIs
CategoryVeterinary Antibacterials

Release specification

Catalogue standard below. For a supply agreement we release against your dossier specification; send it with the enquiry and the CoA will be built around it.

ParameterSpecification
Assay99.0–101.0%
Related substances4-aminobenzenesulfonamide ≤ 0.10%; any unspecified impurity ≤ 0.30%
Water content≤ 0.5% (Karl Fischer)
Heavy metals≤ 20 ppm (ICP-MS)
Melting range197–200 °C
Residue on ignition≤ 0.10%

Application

Sulphonamide for swine and cattle respiratory and enteric infections, alone or potentiated.

Packaging, storage & logistics

Standard packaging25 kg fibre drum with double PE liner
Minimum order25 kg
Lead time15–25 days
Storage conditionsStore below 30 °C, protected from light
Shipping documentsInvoice, packing list, CoA, SDS, certificate of origin; DGM/IATA declaration where applicable

Pack sizes available — pick one to prefill the enquiry

Documentation provided

  • CoA per batchBatch-specific, tested against the specification agreed at PO stage
  • SDSCurrent GHS revision; destination-language version on request
  • MRL guidance noteMaximum residue limit and withdrawal-period reference for the destination market

Need the DMF open part, a sample CoA or an audit pack before you can qualify us? Ask on the enquiry form — we send those documents before any commercial discussion.

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