1-o-Tolueneazo-2-naphthol

Name: 1-o-Tolueneazo-2-naphthol
Brand: Vaqora Chemicals
SKU: VQ-039545

About 1-o-Tolueneazo-2-naphthol

Vaqora Chemicals supplies 1-o-Tolueneazo-2-naphthol, a process intermediate or related compound of Acetone registered under CAS number 2646-17-5. Its molecular formula is C17H14N2O and its molecular weight is 262.3 g/mol. Its systematic (IUPAC) name is 1-[(2-methylphenyl)diazenyl]naphthalen-2-ol. Common synonyms include Orange OT and C.I. Solvent Orange 2.

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. The GHS classification uses the signal word “Warning”, so appropriate gloves, eye protection and ventilation are recommended.

Process chemists and analysts use it when developing synthetic routes to Acetone, tracking process-related impurities and validating analytical methods. It is used across 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

API route development
Impurity fate & purge studies
Analytical method development
Fine chemical synthesis

Industries

Related to Acetone

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

Acetone impurities

Specifications & identifiers

Chemical identifiers
Product name	1-o-Tolueneazo-2-naphthol
Catalogue No.	VQ-039545
CAS Number	2646-17-5
IUPAC name	1-[(2-methylphenyl)diazenyl]naphthalen-2-ol
Molecular formula	C₁₇H₁₄N₂O
Molecular weight	262.3 g/mol
Exact mass	262.1106
HSN code	2933
InChIKey	BQFCCCIRTOLPEF-UHFFFAOYSA-N
SMILES	CC1=CC=CC=C1N=NC2=C(C=CC3=CC=CC=C32)O
PubChem CID	17550

Physical properties
Physical form	Solid
LogP (XLogP3)	5
H-bond donors / acceptors	1 / 3
TPSA	45 Å²
Synonyms	Orange OT, C.I. Solvent Orange 2, Oranz ss, AF Orange No. 2, Oranz rozpoustedlova 2, 1-(o-Tolylazo)-B-naphthol, 2-Naphthol, 1-(o-tolyazo)-, orange II, C.I., Solvent Orange 2, Fat Orange II, Fat Orange RR, Orange SS

Safety & hazard information (GHS)

Health hazard

Signal word: Warning

Hazard statements

H351Suspected of causing cancer

Precautionary statements: P203, 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 1-o-Tolueneazo-2-naphthol?

The CAS Registry Number of 1-o-Tolueneazo-2-naphthol is 2646-17-5. It is also known as Orange OT, C.I. Solvent Orange 2, Oranz ss.

What is the molecular formula and molecular weight of 1-o-Tolueneazo-2-naphthol?

1-o-Tolueneazo-2-naphthol has the molecular formula C17H14N2O and a molecular weight of 262.3 g/mol. Its IUPAC name is 1-[(2-methylphenyl)diazenyl]naphthalen-2-ol.

What is 1-o-Tolueneazo-2-naphthol used for?

1-o-Tolueneazo-2-naphthol is supplied as a characterised reference material related to Acetone. 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 1-o-Tolueneazo-2-naphthol can I order?

We supply 1-o-Tolueneazo-2-naphthol, 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 1-o-Tolueneazo-2-naphthol?

Yes. Every lot of 1-o-Tolueneazo-2-naphthol 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 1-o-Tolueneazo-2-naphthol be shipped internationally?

Yes. 1-o-Tolueneazo-2-naphthol 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.