Dithranol EP Impurity C

Name: Dithranol EP Impurity C
Brand: Vaqora Chemicals
SKU: VQ-025351

About Dithranol EP Impurity C

Vaqora Chemicals supplies Dithranol EP Impurity C, a pharmacopeial impurity of Dithranol registered under CAS number 31991-54-5. The compound has the formula C28H18O6, corresponding to a molecular weight of 450.4 g/mol. Systematically, it is named 10-(4,5-dihydroxy-10-oxo-9H-anthracen-9-yl)-1,8-dihydroxy-10H-anthracen-9-one. Common synonyms include Dithranol Impurity C and Dithranol - Impurity C.

The product is provided as a solid. Keep the vial tightly closed, protected from light and humidity, at the temperature stated on the Certificate of Analysis. It carries the GHS signal word “Warning” with 3 hazard statements. Review the Safety Data Sheet before use.

This Dithranol impurity supports analytical method development and validation (AMV), batch release testing and the impurity sections of ANDA and DMF filings. Our customers for this product work in pharmaceutical manufacturing and academic and industrial research.

Standard pack sizes are 10 mg, 25 mg, 50 mg and 100 mg, and every batch ships with a Certificate of Analysis (COA) and we export worldwide.

Typical applications

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

Industries

Related to Dithranol

View every impurity, metabolite and intermediate we list for Dithranol.

Dithranol impurities

Grade guides

Specifications & identifiers

Chemical identifiers
Product name	Dithranol EP Impurity C
Catalogue No.	VQ-025351
CAS Number	31991-54-5
IUPAC name	10-(4,5-dihydroxy-10-oxo-9H-anthracen-9-yl)-1,8-dihydroxy-10H-anthracen-9-one
Molecular formula	C₂₈H₁₈O₆
Molecular weight	450.4 g/mol
Exact mass	450.1103
Grade	Reference Standard
HSN code	38229090
InChIKey	VEBBCQINQQBIOM-UHFFFAOYSA-N
SMILES	C1=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 CID	160213

Physical properties
Physical form	Solid
LogP (XLogP3)	5.8
H-bond donors / acceptors	4 / 6
TPSA	115 Å²
Synonyms	Dithranol 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

Safety & hazard information (GHS)

Harmful / irritant

Signal word: Warning

Hazard statements

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 is indicative (aggregated GHS notifications) and may vary by grade and concentration. Always refer to the SDS supplied with your lot.

Documents

Safety Data Sheet (SDS)16-section GHS · on request Certificate of AnalysisTypical / batch COA · on request Specification sheetTDS / MOA · on request

Frequently asked questions

What is the CAS number of Dithranol EP Impurity C?

The CAS Registry Number of Dithranol EP Impurity C is 31991-54-5. It is also known as Dithranol Impurity C, Dithranol - Impurity C, 1,8,1',8'-Tetrahydroxybisanthrone.

What is the molecular formula and molecular weight of Dithranol EP Impurity C?

Dithranol EP Impurity C has the molecular formula C28H18O6 and a molecular weight of 450.4 g/mol. Its IUPAC name is 10-(4,5-dihydroxy-10-oxo-9H-anthracen-9-yl)-1,8-dihydroxy-10H-anthracen-9-one.

What is Dithranol EP Impurity C used for?

Dithranol EP Impurity C is supplied as a characterised reference material related to Dithranol. It is used for analytical method development and validation (AMV), impurity profiling, stability studies and quality control, and in ANDA/DMF regulatory filings.

Which grade and pack sizes of Dithranol EP Impurity C can I order?

We supply Dithranol EP Impurity C in Reference Standard grade, in 10 mg, 25 mg, 50 mg, 100 mg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with Dithranol EP Impurity C?

Yes. Every lot of Dithranol EP Impurity C is shipped with a batch-specific Certificate of Analysis, and a 16-section GHS Safety Data Sheet is provided with the quotation and the shipment.

Can Dithranol EP Impurity C be shipped internationally?

Yes. Dithranol EP Impurity C is classified as hazardous, so it is packed in UN-approved packaging and shipped as dangerous goods under IATA/IMDG rules. We export worldwide on EXW, FOB, CIF and DAP terms.