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API Impurities

1,2,4-Triazolo[4,3-a]pyridine-3(2H)-one

Reference StandardAvailable on request

1,2,4-Triazolo[4,3-a]pyridine-3(2H)-one (CAS 6969-71-7) supplier Zemixal. Request a quote with price, lead time and documents.

Pack sizes
1,2,4-Triazolo[4,3-a]pyridine-3(2H)-one chemical structure
CAS number6969-71-7
FormulaC6H5N3O
Molar mass135.12 g/mol
Physical formSolid
HS code38229090
InChIKeyLJRXNXBFJXXRNQ-UHFFFAOYSA-N
IUPAC name2H-[1,2,4]triazolo[4,3-a]pyridin-3-one

About 1,2,4-Triazolo[4,3-a]pyridine-3(2H)-one

1,2,4-Triazolo[4,3-a]pyridine-3(2H)-one belongs to the Trazodone reference-standard family in the Zemixal catalogue. Identity at a glance (Reference Standard): CAS 6969-71-7, formula C6H5N3O and molar mass 135.12 g/mol. It is handled as a solid.

Common uses in the lab and plant

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

Storage and safety notes

Classified under GHS with signal word Warning and hazard statements H315, H319, H335 and H412. 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.

Reference standards for Trazodone

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

Trazodone standards

Typical uses

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

Applications

Pharmaceutical Manufacturing and QCResearch Labs and Universities

Specifications and identifiers

Specifications of 1,2,4-Triazolo[4,3-a]pyridine-3(2H)-one
Product name1,2,4-Triazolo[4,3-a]pyridine-3(2H)-one
Catalogue numberZX-027374
CAS number6969-71-7
IUPAC name2H-[1,2,4]triazolo[4,3-a]pyridin-3-one
Molecular formulaC6H5N3O
Molar mass135.12 g/mol
Exact mass135.0433
GradeReference Standard
Physical formSolid
H-bond donors / acceptors1 / 2
Topological polar surface area44.7 Ų
HS code38229090
InChIKeyLJRXNXBFJXXRNQ-UHFFFAOYSA-N
SMILESC1=CC2=NNC(=O)N2C=C1
PubChem CID81431
Synonyms1,2,4-Triazolo[4,3-a]pyridin-3(2H)-one, 1,2,4-Triazolo(4,3-a)pyridin-3(2H)-one, 3-Hydroxytriazolo[4,3-a]pyridine, [1,2,4]Triazolo[4,3-a]pyridin-3(2H)-one, [1,2,4]triazolo[4,3-a]pyridin-3-ol, 2H,3H-[1,2,4]triazolo[4,3-a]pyridin-3-one, 1,2,4-triazolo[4,3-a]pyridin-3-ol, s-Triazolo[4,3-a]pyridin-3-ol, 4-hydro-2H-1,2,4-triazolino[4,3-a]pyridin-3-one, 124-Triazolo[43-a]pyridin-3(2H)-one, 1,2,3a-triaza-3-indenol

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
  • H412Harmful to aquatic life with long lasting effects

Precautionary statements P261, P264, P264 + P265, P271, P273, 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 1,2,4-Triazolo[4,3-a]pyridine-3(2H)-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 1,2,4-Triazolo[4,3-a]pyridine-3(2H)-one

Which CAS number identifies 1,2,4-Triazolo[4,3-a]pyridine-3(2H)-one?
1,2,4-Triazolo[4,3-a]pyridine-3(2H)-one is registered under CAS 6969-71-7. You may also see it listed as 1,2,4-Triazolo[4,3-a]pyridin-3(2H)-one, 1,2,4-Triazolo(4,3-a)pyridin-3(2H)-one, 3-Hydroxytriazolo[4,3-a]pyridine. Our catalogue number for this item is ZX-027374.
What are the formula and molar mass of 1,2,4-Triazolo[4,3-a]pyridine-3(2H)-one?
For 1,2,4-Triazolo[4,3-a]pyridine-3(2H)-one, its formula is C6H5N3O and its molar mass is 135.12 g/mol. The systematic (IUPAC) name is 2H-[1,2,4]triazolo[4,3-a]pyridin-3-one. InChIKey LJRXNXBFJXXRNQ-UHFFFAOYSA-N lets you match it in any structure database.
How is 1,2,4-Triazolo[4,3-a]pyridine-3(2H)-one used in pharmaceutical QC?
1,2,4-Triazolo[4,3-a]pyridine-3(2H)-one is a characterised reference material linked to Trazodone. 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 1,2,4-Triazolo[4,3-a]pyridine-3(2H)-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 1,2,4-Triazolo[4,3-a]pyridine-3(2H)-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 1,2,4-Triazolo[4,3-a]pyridine-3(2H)-one to my country?
Yes. Because 1,2,4-Triazolo[4,3-a]pyridine-3(2H)-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.

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