3-Methylcholanthrene

Name: 3-Methylcholanthrene
Brand: Vaqora Chemicals
SKU: VQ-019584

About 3-Methylcholanthrene

3-Methylcholanthrene (CAS 56-49-5) is an API impurity reference standard offered by Vaqora Chemicals. The compound has the formula C21H16, corresponding to a molecular weight of 268.4 g/mol. Its systematic (IUPAC) name is 3-methyl-1,2-dihydrobenzo[j]aceanthrylene. Alternative names: 20-Methylcholanthrene (b) ~ and Methylcholanthrene.

The product is provided as a solid. Store the standard in its sealed vial, protected from light and moisture, and follow the storage condition printed on the COA. The GHS classification uses the signal word “Danger”, so appropriate gloves, eye protection and ventilation are recommended.

As a characterised impurity of the parent drug substance, it is used for analytical method development, method validation (AMV) and routine quality-control testing, and it supports ANDA and DMF regulatory filings. It is used across pharmaceutical manufacturing and academic and industrial research.

Vaqora Chemicals supplies 3-Methylcholanthrene in 25 mg packs, each shipped with a Certificate of Analysis (COA), and exports worldwide.

Typical applications

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

Industries

Specifications & identifiers

Chemical identifiers
Product name	3-Methylcholanthrene
Catalogue No.	VQ-019584
CAS Number	56-49-5
IUPAC name	3-methyl-1,2-dihydrobenzo[j]aceanthrylene
Molecular formula	C₂₁H₁₆
Molecular weight	268.4 g/mol
Exact mass	268.1252
Grade	Reference Standard
HSN code	38229090
InChIKey	PPQNQXQZIWHJRB-UHFFFAOYSA-N
SMILES	CC1=C2CCC3=C2C(=CC4=C3C=CC5=CC=CC=C54)C=C1
PubChem CID	1674

Physical properties
Physical form	Solid
LogP (XLogP3)	6.4
H-bond donors / acceptors	0 / 0
TPSA	0 Å²
Synonyms	20-Methylcholanthrene (b) ~, Methylcholanthrene, 20-Methylcholanthrene, 3-methyl-1,2-dihydrocyclopenta[ij]tetraphene, 3-MCA, 3-Methoxycholanthrene, 20-MC, 3-MeCA, Cholanthrene, 3-methyl-, 1,2-Dihydro-3-methylbenz(j)aceanthrylene, Benz(j)aceanthrylene, 1,2-dihydro-3-methyl-, Benz[j]aceanthrylene, 1,2-dihydro-3-methyl-

Safety & hazard information (GHS)

Health hazard

Signal word: Danger

Hazard statements

H350May cause cancer
H413May cause long lasting harmful effects to aquatic life

Precautionary statements: P203, P273, P280, P318, P405, 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 3-Methylcholanthrene?

The CAS Registry Number of 3-Methylcholanthrene is 56-49-5. It is also known as 20-Methylcholanthrene (b) ~, Methylcholanthrene, 20-Methylcholanthrene.

What is the molecular formula and molecular weight of 3-Methylcholanthrene?

3-Methylcholanthrene has the molecular formula C21H16 and a molecular weight of 268.4 g/mol. Its IUPAC name is 3-methyl-1,2-dihydrobenzo[j]aceanthrylene.

Which grade and pack sizes of 3-Methylcholanthrene can I order?

We supply 3-Methylcholanthrene in Reference Standard grade, in 25 mg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with 3-Methylcholanthrene?

Yes. Every lot of 3-Methylcholanthrene 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 3-Methylcholanthrene be shipped internationally?

Yes. 3-Methylcholanthrene 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.