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Pharmacopeial Impurities (EP / USP / BP)

Cefazolin EP Impurity E

Reference StandardAvailable on request

Order Cefazolin EP Impurity E (CAS 29490-19-5) online at Zemixal. Lab and bulk packs, batch COA, fast global delivery. Packs from 10 mg.

Pack sizes
Cefazolin EP Impurity E chemical structure
CAS number29490-19-5
FormulaC3H4N2S2
Molar mass132.21 g/mol
Physical formSolid
HS code38229090
InChIKeyFPVUWZFFEGYCGB-UHFFFAOYSA-N
IUPAC name5-methyl-3H-1,3,4-thiadiazole-2-thione

About Cefazolin EP Impurity E

Cefazolin EP Impurity E belongs to the Cefazolin reference-standard family in the Zemixal catalogue. For your records (Reference Standard), the material is defined by CAS 29490-19-5, formula C3H4N2S2 and molar mass 132.21 g/mol. It is handled as a solid.

Where it is used

  • Pharmacopeial method verification
  • Impurity profiling
  • QC release testing
  • ANDA / DMF filings

Storage and safety notes

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

Available as 10 mg, 25 mg, 50 mg and 100 mg. Larger or split packs can be arranged. Each lot travels with a certificate of analysis with characterisation data. Request pricing online and we confirm availability, documentation and freight to your country.

Reference standards for Cefazolin

See every impurity, metabolite and related compound we list for this API.

Cefazolin standards

Typical uses

  • Pharmacopeial method verification
  • Impurity profiling
  • QC release testing
  • ANDA / DMF filings

Applications

Pharmaceutical Manufacturing and QCResearch Labs and Universities

Grade guides

Ph. Eur. Grade (European Pharmacopoeia)

Specifications and identifiers

Specifications of Cefazolin EP Impurity E
Product nameCefazolin EP Impurity E
Catalogue numberZX-021096
CAS number29490-19-5
IUPAC name5-methyl-3H-1,3,4-thiadiazole-2-thione
Molecular formulaC3H4N2S2
Molar mass132.21 g/mol
Exact mass131.9816
GradeReference Standard
Physical formSolid
XLogP30.9
H-bond donors / acceptors1 / 3
Topological polar surface area81.8 Ų
HS code38229090
InChIKeyFPVUWZFFEGYCGB-UHFFFAOYSA-N
SMILESCC1=NNC(=S)S1
PubChem CID1810203
SynonymsCefazolin Sodium - Impurity E, 5-Methyl-1,3,4-thiadiazole-2-thiol, 2-Mercapto-5-methyl-1,3,4-thiadiazole, 5-Methyl-1,3,4-thiadiazole-2(3H)-thione, 2-Methyl-5-mercapto-1,3,4-thiadiazole, 5-methyl-1,3,4-thiadiazolyl-2-thiol, 2-Methyl-1,3,4-thiadiazoline-5-thione, 1,3,4-Thiadiazole-2(3H)-thione, 5-methyl-, 5-methyl-1,3,4-thiadiazol-2-thiol, 5-methyl-2,3-dihydro-1,3,4-thiadiazole-2-thione, 5-Methyl-1,3,4-thiadiazol-2-thiol (MMTD), 5-mercapto-2-methyl-1,3,4-thiadiazole

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 Cefazolin EP Impurity E
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 Cefazolin EP Impurity E

Which CAS number identifies Cefazolin EP Impurity E?
Cefazolin EP Impurity E is registered under CAS 29490-19-5. You may also see it listed as Cefazolin Sodium - Impurity E, 5-Methyl-1,3,4-thiadiazole-2-thiol, 2-Mercapto-5-methyl-1,3,4-thiadiazole. Our catalogue number for this item is ZX-021096.
What are the formula and molar mass of Cefazolin EP Impurity E?
For Cefazolin EP Impurity E, its formula is C3H4N2S2 and its molar mass is 132.21 g/mol. The systematic (IUPAC) name is 5-methyl-3H-1,3,4-thiadiazole-2-thione. InChIKey FPVUWZFFEGYCGB-UHFFFAOYSA-N lets you match it in any structure database.
How is Cefazolin EP Impurity E used in pharmaceutical QC?
Cefazolin EP Impurity E is a characterised reference material linked to Cefazolin. Laboratories use it to identify and quantify this impurity during method development and validation, stability work, batch release testing and regulatory submissions.
What grade and pack sizes are available for Cefazolin EP Impurity E?
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 Cefazolin EP Impurity E?
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 Cefazolin EP Impurity E to my country?
Yes. Because Cefazolin EP Impurity E 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.

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