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API Process Intermediates & Related Compounds

3-Hydroxy-1(3H)-isobenzofuranone

Reference StandardIn stock

3-Hydroxy-1(3H)-isobenzofuranone (CAS 16859-59-9) supplier Zemixal: C8H6O3, COA and SDS with every lot, worldwide shipping.

Pack sizes
3-Hydroxy-1(3H)-isobenzofuranone chemical structure
CAS number16859-59-9
FormulaC8H6O3
Molar mass150.13 g/mol
Physical formSolid
InChIKeyJKNKNWJNCOJPLI-UHFFFAOYSA-N
IUPAC name3-hydroxy-3H-2-benzofuran-1-one

About 3-Hydroxy-1(3H)-isobenzofuranone

3-Hydroxy-1(3H)-isobenzofuranone is part of the Zemixal API Process Intermediates & Related Compounds range. For your records (Reference Standard), the material is defined by CAS 16859-59-9, formula C8H6O3 and molar mass 150.13 g/mol. It is handled as a solid.

Typical applications

  • API route development
  • Impurity fate & purge studies
  • Analytical method development

Safe handling

Hazard communication follows GHS (Warning: H315, H319 and H335). Our SDS lists exposure controls and first-aid measures.

Standard pack sizes are 10 mg, 25 mg, 50 mg, 100 mg and 250 mg, and custom quantities are quoted on request. Each lot travels with a batch certificate of analysis and a 16-section SDS. Send an enquiry through the quote panel and you get a formal offer with Incoterms and delivery time.

Reference standards for Olaparib

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

Olaparib standards

Typical uses

  • API route development
  • Impurity fate & purge studies
  • Analytical method development

Applications

Pharmaceutical Manufacturing and QCResearch Labs and Universities

Specifications and identifiers

Specifications of 3-Hydroxy-1(3H)-isobenzofuranone
Product name3-Hydroxy-1(3H)-isobenzofuranone
Catalogue numberZX-012081
CAS number16859-59-9
IUPAC name3-hydroxy-3H-2-benzofuran-1-one
Molecular formulaC8H6O3
Molar mass150.13 g/mol
Exact mass150.0317
GradeReference Standard
Physical formSolid
XLogP30.6
H-bond donors / acceptors1 / 3
Topological polar surface area46.5 Ų
InChIKeyJKNKNWJNCOJPLI-UHFFFAOYSA-N
SMILESC1=CC=C2C(=C1)C(OC2=O)O
PubChem CID3804259
Synonyms3-Hydroxyphthalide, (±)-3-Hydroxy-1(3H)-isobenzofuranone, (±)-3-Hydroxyphthalide, 3-Hydroxy-1,3-dihydro-2-benzofuran-1-one, 3-Hydroxybenzo[c]furan-1(3H)-one, 3-hydroxyisobenzofuran-1(3H)-one, o-Phthalaldehydic acid, hydroxyphthalide, 3-hydroxy-2-benzofuran-1(3H)-one, 3-hydroxy-3H-isobenzofuran-1-one, 1(3H)-isobenzofuranone, 3-hydroxy-, hydroxyl phthalide

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 3-Hydroxy-1(3H)-isobenzofuranone
10 mgQuoted on request
25 mgQuoted on request
50 mgQuoted on request
100 mgQuoted on request
250 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 3-Hydroxy-1(3H)-isobenzofuranone

Which CAS number identifies 3-Hydroxy-1(3H)-isobenzofuranone?
3-Hydroxy-1(3H)-isobenzofuranone is registered under CAS 16859-59-9. You may also see it listed as 3-Hydroxyphthalide, (±)-3-Hydroxy-1(3H)-isobenzofuranone, (±)-3-Hydroxyphthalide. Our catalogue number for this item is ZX-012081.
What are the formula and molar mass of 3-Hydroxy-1(3H)-isobenzofuranone?
For 3-Hydroxy-1(3H)-isobenzofuranone, its formula is C8H6O3 and its molar mass is 150.13 g/mol. The systematic (IUPAC) name is 3-hydroxy-3H-2-benzofuran-1-one. InChIKey JKNKNWJNCOJPLI-UHFFFAOYSA-N lets you match it in any structure database.
How is 3-Hydroxy-1(3H)-isobenzofuranone used in pharmaceutical QC?
3-Hydroxy-1(3H)-isobenzofuranone is a characterised reference material linked to Olaparib. 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 3-Hydroxy-1(3H)-isobenzofuranone?
This listing is Reference Standard grade. Standard packs are 10 mg, 25 mg, 50 mg, 100 mg, 250 mg. Larger quantities and custom packing can be quoted on request.
Which documents come with 3-Hydroxy-1(3H)-isobenzofuranone?
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 3-Hydroxy-1(3H)-isobenzofuranone to my country?
Yes. Because 3-Hydroxy-1(3H)-isobenzofuranone 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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