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API Impurities

9-Methylidenefluorene

Reference StandardAvailable on request

Buy 9-Methylidenefluorene (CAS 4425-82-5) from Zemixal. Lab and bulk packs, batch COA, fast global delivery. Packs from 10 mg.

Pack sizes
9-Methylidenefluorene chemical structure
CAS number4425-82-5
FormulaC14H10
Molar mass178.23 g/mol
Physical formSolid
HS code38229090
InChIKeyZYASLTYCYTYKFC-UHFFFAOYSA-N
IUPAC name9-methylidenefluorene

About 9-Methylidenefluorene

Zemixal lists 9-Methylidenefluorene for laboratories that identify, quantify or control Fluorene and its related substances. Key data (Reference Standard): CAS 4425-82-5, formula C14H10 and molar mass 178.23 g/mol. It is handled as a solid.

Typical applications

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

Safe handling

It carries the GHS signal word Warning (H315, H319 and H335), 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. Send an enquiry through the quote panel and you get a formal offer with Incoterms and delivery time.

Reference standards for Fluorene

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

Fluorene standards

Typical uses

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

Applications

Specifications and identifiers

Specifications of 9-Methylidenefluorene
Product name9-Methylidenefluorene
Catalogue numberZX-035192
CAS number4425-82-5
IUPAC name9-methylidenefluorene
Molecular formulaC14H10
Molar mass178.23 g/mol
Exact mass178.0783
GradeReference Standard
Physical formSolid
XLogP33.7
H-bond donors / acceptors0 / 0
Topological polar surface area0 Ų
HS code38229090
InChIKeyZYASLTYCYTYKFC-UHFFFAOYSA-N
SMILESC=C1C2=CC=CC=C2C3=CC=CC=C13
PubChem CID78147
SynonymsDibenzofulvene, 9-Methylene-9H-fluorene, 9H-Fluorene, 9-methylene-, 9-methylenefluorene, 9-Methylene-fluorene, fluorenylidenemethane, 9-Methylene-9H-fluorene #, 9-Methylidenefluorene (Stabilized with Hydroquinone), Dibenzofulvene (DBF) Oligomer-9-Methylene-9H-fluorene

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 9-Methylidenefluorene
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 9-Methylidenefluorene

Which CAS number identifies 9-Methylidenefluorene?
9-Methylidenefluorene is registered under CAS 4425-82-5. You may also see it listed as Dibenzofulvene, 9-Methylene-9H-fluorene, 9H-Fluorene, 9-methylene-. Our catalogue number for this item is ZX-035192.
What are the formula and molar mass of 9-Methylidenefluorene?
For 9-Methylidenefluorene, its formula is C14H10 and its molar mass is 178.23 g/mol. The systematic (IUPAC) name is 9-methylidenefluorene. InChIKey ZYASLTYCYTYKFC-UHFFFAOYSA-N lets you match it in any structure database.
How is 9-Methylidenefluorene used in pharmaceutical QC?
9-Methylidenefluorene is a characterised reference material linked to Fluorene. 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 9-Methylidenefluorene?
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 9-Methylidenefluorene?
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 9-Methylidenefluorene to my country?
Yes. Because 9-Methylidenefluorene 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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