1(2H)-Phthalazinone suppliers and prices

Formula: C₈H₆N₂O
CAS number: 119-39-1
Molar mass: 146.15 g/mol

Cheapest by weight

$391 per kilogram

500 grams for 175.00 EUR, about $196

At CymitQuimica, Spain · Grade not stated

View at CymitQuimica

Lowest total price

$11.00 for 5 grams

Works out at $2.20 per gram

At Syntree, CN

View at Syntree

Every price we found

7 prices from 2 stores, checked November 1, 2026. In stock from $391 to $424 per kilogram, depending on pack size and store. Each one is worked out per kilogram, so a small bottle and a big bag compare fairly.

SortShow prices per Currency

Showing all 7 prices

Pack	Store	Grade and form	Price per unit
500 grams175.00 EUR, about $196	CymitQuimicaSpain	Lowest priceGrade not stated	$391 per kilogram
2.5 kilograms949.00 EUR, about $1,060	CymitQuimicaSpain	Grade not stated	$424 per kilogram
25 grams21.00 EUR, about $23	CymitQuimicaSpain	Grade not stated	$0.94 per gram
5 grams$11.00	SyntreeCN	Grade not stated	$2.20 per gram
10 grams$35.00	SyntreeCN	Grade not stated	$3.50 per gram
5 grams24.00 EUR, about $27	CymitQuimicaSpain	Grade not stated	$5.36 per gram
50 milligrams623.00 EUR, about $696	CymitQuimicaSpain	Grade not stated	$13,920 per gram

Cite these pricesA ready sentence and reference for your report

For your report

As of November 1, 2026, the lowest store price for 1(2H)-Phthalazinone was $391 per kilogram, converted to US dollars: 500 grams for 175.00 EUR at CymitQuimica.

Reference

APA, 7th edition

ChemicalSuppliers.com. (2026, November 1). 1(2H)-Phthalazinone suppliers and prices. Retrieved November 1, 2026, from https://www.chemicalsuppliers.com/1-2h-phthalazinone/

ACS

1(2H)-Phthalazinone Suppliers and Prices. ChemicalSuppliers.com, November 1, 2026. https://www.chemicalsuppliers.com/1-2h-phthalazinone/ (accessed 2026-11-01).

BibTeX

@misc{chemicalsuppliers-1-2h-phthalazinone,
  author  = {{ChemicalSuppliers.com}},
  title   = {{1(2H)-Phthalazinone} suppliers and prices},
  year    = {2026},
  date    = {2026-11-01},
  url     = {https://www.chemicalsuppliers.com/1-2h-phthalazinone/},
  urldate = {2026-11-01},
  note    = {Prices checked November 1, 2026}
}

Prices change every day, so each line carries the date they were checked.

Making a solution?

Pick the strength and how much you need. We work out the grams of 1(2H)-Phthalazinone and what they cost at the cheapest store we track.

Strength

Amount of solution

You need: 146 grams; of 1(2H)-Phthalazinone, molar mass 146.15 g/mol
That much costs: $57.15; $57.15 per litre of solution, at the lowest price per gram we found
Cheapest way to buy it: $140.77; 6 packs of 25 grams at CymitQuimica; View at CymitQuimica

Weigh it out, dissolve it in less water than you need, then top up to the full amount.

Similar chemicals

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Chemical identity

Formula, molar mass, CAS number, InChIKey and the official PubChem record

Formula: C₈H₆N₂O
Molar mass: 146.15 g/mol
CAS number: 119-39-1
InChIKey: IJAPPYDYQCXOEF-UHFFFAOYSA-N
Official record: PubChem 8394

How we compare: each store's own price, turned into US dollars at European Central Bank rates of 2026-10-30, then divided by the pack size. Shipping and tax are not included.