Shipping to 128 countriesCOA and SDS with every lotQuotes within one business day
contact@zemixal.com
Bulk CASAccount
Pharmacopeial Impurities (EP / USP / BP)

Dithranol EP Impurity C

Reference StandardAvailable on request

Buy Dithranol EP Impurity C (CAS 31991-54-5) from Zemixal. Lab and bulk packs, batch COA, fast global delivery. Catalogue no. ZX-024319.

Pack sizes
Dithranol EP Impurity C chemical structure
CAS number31991-54-5
FormulaC28H18O6
Molar mass450.4 g/mol
Physical formSolid
HS code38229090
InChIKeyVEBBCQINQQBIOM-UHFFFAOYSA-N
IUPAC name10-(4,5-dihydroxy-10-oxo-9H-anthracen-9-yl)-1,8-dihydroxy-10H-anthracen-9-one

About Dithranol EP Impurity C

Analytical teams working on Dithranol use Dithranol EP Impurity C as a qualified comparison standard. Identity at a glance (Reference Standard): CAS 31991-54-5, formula C28H18O6 and molar mass 450.4 g/mol. It is handled as a solid.

Use cases we see most often

  • Pharmacopeial method verification
  • Impurity profiling
  • QC release testing
  • ANDA / DMF filings

Storage and safety notes

It carries the GHS signal word Warning (H302, H315 and H319), 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. Every shipment includes a certificate of analysis with characterisation data. Request pricing online and we confirm availability, documentation and freight to your country.

Reference standards for Dithranol

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

Dithranol standards

Typical uses

  • Pharmacopeial method verification
  • Impurity profiling
  • QC release testing
  • ANDA / DMF filings

Applications

Pharmaceutical Manufacturing and QCResearch Labs and Universities

Grade guides

Ph. Eur. Grade (European Pharmacopoeia)

Specifications and identifiers

Specifications of Dithranol EP Impurity C
Product nameDithranol EP Impurity C
Catalogue numberZX-024319
CAS number31991-54-5
IUPAC name10-(4,5-dihydroxy-10-oxo-9H-anthracen-9-yl)-1,8-dihydroxy-10H-anthracen-9-one
Molecular formulaC28H18O6
Molar mass450.4 g/mol
Exact mass450.1103
GradeReference Standard
Physical formSolid
XLogP35.8
H-bond donors / acceptors4 / 6
Topological polar surface area115 Ų
HS code38229090
InChIKeyVEBBCQINQQBIOM-UHFFFAOYSA-N
SMILESC1=CC2=C(C(=C1)O)C(=O)C3=C(C2C4C5=C(C(=CC=C5)O)C(=O)C6=C4C=CC=C6O)C=CC=C3O
PubChem CID160213
SynonymsDithranol Impurity C, Dithranol - Impurity C, 1,8,1',8'-Tetrahydroxybisanthrone, 1,8,1',8'-Thba, (9,9'-Bianthracene)-10,10'(9H,9'H)-dione, 4,4',5,5'-tetrahydroxy-, Anthralin dimer, 4,4',5,5'-Tetrahydroxy-[9,9'-bianthracene]-10,10'(9H,9'H)-dione, Dithranol Dimer, 4,4',5,5'-Tetrahydroxy-9,9'-bianthracenyl-10,10'(9H,9'H)-dione (Dithranol Dimer), 1,1',8,8'-tetrahydroxy-10,10'-bianthrone, 1,8,1',8'-tetrahydroxy-10,10'-dianthrone, 4,4',5,5'-Tetrahydroxy[9,9'-bianthracene]-10,10'(9H,9'H)-dione

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
  • H315Causes skin irritation
  • H319Causes serious eye irritation

Precautionary statements P264, P264 + P265, P270, P280, P301 + P317, P302 + P352, P305 + P351 + P338, P321, P330, P332 + P317, P337 + P317, P362 + P364, 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 Dithranol EP Impurity C
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 Dithranol EP Impurity C

Which CAS number identifies Dithranol EP Impurity C?
Dithranol EP Impurity C is registered under CAS 31991-54-5. You may also see it listed as Dithranol Impurity C, Dithranol - Impurity C, 1,8,1',8'-Tetrahydroxybisanthrone. Our catalogue number for this item is ZX-024319.
What are the formula and molar mass of Dithranol EP Impurity C?
For Dithranol EP Impurity C, its formula is C28H18O6 and its molar mass is 450.4 g/mol. The systematic (IUPAC) name is 10-(4,5-dihydroxy-10-oxo-9H-anthracen-9-yl)-1,8-dihydroxy-10H-anthracen-9-one. InChIKey VEBBCQINQQBIOM-UHFFFAOYSA-N lets you match it in any structure database.
How is Dithranol EP Impurity C used in pharmaceutical QC?
Dithranol EP Impurity C is a characterised reference material linked to Dithranol. 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 Dithranol EP Impurity C?
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 Dithranol EP Impurity C?
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 Dithranol EP Impurity C to my country?
Yes. Because Dithranol EP Impurity C 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 Dithranol standards

More in Pharmacopeial Impurities (EP / USP / BP)

Have a list of compounds to price?

Paste up to 200 CAS numbers into Bulk CAS lookup, or send one enquiry for everything in your quote list. We reply with price, lead time and documents.

Bulk CAS lookup Open quote list
Compare 0 of 4Compare now