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API Reference Standards

1-Phthalazinone

Reference StandardAvailable on request

1-Phthalazinone (CAS 20055-18-9) supplier Zemixal. Request a quote with price, lead time and documents. Exported from India with full paperwork.

Pack sizes
1-Phthalazinone chemical structure
CAS number20055-18-9
FormulaC8H6N2O
Molar mass146.15 g/mol
Physical formSolid
HS code38229090
InChIKeyIJAPPYDYQCXOEF-UHFFFAOYSA-N
IUPAC name2H-phthalazin-1-one

About 1-Phthalazinone

Zemixal lists 1-Phthalazinone for laboratories that identify, quantify or control Hydralazine and its related substances. Key data (Reference Standard): CAS 20055-18-9, formula C8H6N2O and molar mass 146.15 g/mol. It is handled as a solid.

Typical applications

  • Identification & assay
  • Method development & validation
  • QC reference material
  • Fine chemical synthesis

Safe handling

It carries the GHS signal word Warning (H302), so wear gloves and eye protection and work with good ventilation.

Order it in 10 mg, 25 mg, 50 mg and 100 mg packs or ask for a bulk quotation. You receive a certificate of analysis with characterisation data with each order. Request pricing online and we confirm availability, documentation and freight to your country.

Reference standards for Hydralazine

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

Hydralazine standards

Typical uses

  • Identification & assay
  • Method development & validation
  • QC reference material
  • Fine chemical synthesis

Applications

Pharmaceutical Manufacturing and QCResearch Labs and Universities

Specifications and identifiers

Specifications of 1-Phthalazinone
Product name1-Phthalazinone
Catalogue numberZX-029822
CAS number20055-18-9
IUPAC name2H-phthalazin-1-one
Molecular formulaC8H6N2O
Molar mass146.15 g/mol
Exact mass146.048
GradeReference Standard
Physical formSolid
XLogP30.8
H-bond donors / acceptors1 / 2
Topological polar surface area41.5 Ų
HS code38229090
InChIKeyIJAPPYDYQCXOEF-UHFFFAOYSA-N
SMILESC1=CC=C2C(=C1)C=NNC2=O
PubChem CID8394
SynonymsPhthalazin-1(2H)-one, Phthalazone, Phthalazin-1-one, 1-Phthalazinol, Phthalazinone, phthalazin-1-ol, 1-Hydroxyphthalazine, 1(2H)Phthalazinone, 1,2-dihydrophthalazin-1-one, 1-oxophthalazine, (2H)-phthalazinone, Benzo[d]pyridazin-1(2H)one

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

  • H302Harmful if swallowed

Precautionary statements P264, P270, P301 + P317, P330, 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-Phthalazinone
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-Phthalazinone

Which CAS number identifies 1-Phthalazinone?
1-Phthalazinone is registered under CAS 20055-18-9. You may also see it listed as Phthalazin-1(2H)-one, Phthalazone, Phthalazin-1-one. Our catalogue number for this item is ZX-029822.
What are the formula and molar mass of 1-Phthalazinone?
For 1-Phthalazinone, its formula is C8H6N2O and its molar mass is 146.15 g/mol. The systematic (IUPAC) name is 2H-phthalazin-1-one. InChIKey IJAPPYDYQCXOEF-UHFFFAOYSA-N lets you match it in any structure database.
How is 1-Phthalazinone used in pharmaceutical QC?
1-Phthalazinone is a characterised reference material linked to Hydralazine. 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-Phthalazinone?
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-Phthalazinone?
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-Phthalazinone to my country?
Yes. Because 1-Phthalazinone 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.

More Hydralazine standards

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