1,2,3-Benzotriazin-4(3H)-one, 98%

About 1,2,3-Benzotriazin-4(3H)-one, 98%

1,2,3-Benzotriazin-4(3H)-one is an azole building block carrying the CAS registry number 90-16-4 at a purity of 98%. Its molecular formula is C7H5N3O and its molecular weight is 147.13 g/mol. Its systematic (IUPAC) name is 3H-1,2,3-benzotriazin-4-one. It is also known as 4-Ketobenzotriazine or 1,2,3-Benzotriazin-4-one.

In its supplied form it is white to light gray to light orange powder or crystals. Literature values give a melting point of 216-218 °C. Keep the container tightly sealed and store it in a cool, dry area. It carries the GHS signal word “Warning” with 6 hazard statements. Review the Safety Data Sheet before use.

Key uses span organic synthesis and API synthesis. Buyers come mainly from pharmaceutical manufacturing, academic and industrial research and agrochemical production.

Available in 5 g, 25 g and 100 g packs, 1,2,3-Benzotriazin-4(3H)-one is dispatched with a Certificate of Analysis (COA) to destinations worldwide.

Typical applications

Organic synthesis
API synthesis

Industries

Specifications & identifiers

Chemical identifiers
Product name	1,2,3-Benzotriazin-4(3H)-one, 98%
Catalogue No.	VQ-012218
CAS Number	90-16-4
IUPAC name	3H-1,2,3-benzotriazin-4-one
Molecular formula	C₇H₅N₃O
Molecular weight	147.13 g/mol
Exact mass	147.0433
Purity / assay	98%
HSN code	38220090
InChIKey	DMSSTTLDFWKBSX-UHFFFAOYSA-N
SMILES	C1=CC=C2C(=C1)C(=O)NN=N2
PubChem CID	135408793

Physical properties
Physical form	Crystalline
Appearance	White to light gray to light orange powder or crystals
Melting point	216-218 °C
LogP (XLogP3)	1.4
H-bond donors / acceptors	1 / 3
TPSA	53.8 Å²
Synonyms	4-Ketobenzotriazine, 1,2,3-Benzotriazin-4-one, 1,2,3-Benzotriazin-4(3H)-one, 1,2,3-Benzotriazin-4(1H)-one, Benzo[d][1,2,3]triazin-4(3H)-one, Benzazimidone, Benzazimide, 1,2,3-Benzotriazin-4-ol, 4-Ketobenztriazine, Benzoketotriazine, 3,4-Dihydro-4-oxo-1,2,3-benzotriazine, 1H-1,2,3-benzotriazin-4-one

Safety & hazard information (GHS)

Harmful / irritant

Health hazard

Signal word: Warning

Hazard statements

H302Harmful if swallowed
H315Causes skin irritation
H319Causes serious eye irritation
H332Harmful if inhaled
H335May cause respiratory irritation
H361Suspected of damaging fertility or the unborn child

Precautionary statements: P203, P261, P264, P264 + P265, P270, P271, P280, P301 + P317, P302 + P352, P304 + P340, P305 + P351 + P338, P317, P318, P319, P321, P330, P332 + P317, P337 + P317, P362 + P364, P403 + P233, 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 1,2,3-Benzotriazin-4(3H)-one, 98%?

The CAS Registry Number of 1,2,3-Benzotriazin-4(3H)-one, 98% is 90-16-4. It is also known as 4-Ketobenzotriazine, 1,2,3-Benzotriazin-4-one, 1,2,3-Benzotriazin-4(3H)-one.

What is the molecular formula and molecular weight of 1,2,3-Benzotriazin-4(3H)-one, 98%?

1,2,3-Benzotriazin-4(3H)-one, 98% has the molecular formula C7H5N3O and a molecular weight of 147.13 g/mol. Its IUPAC name is 3H-1,2,3-benzotriazin-4-one.

Which grade and pack sizes of 1,2,3-Benzotriazin-4(3H)-one, 98% can I order?

We supply 1,2,3-Benzotriazin-4(3H)-one, 98% in (98%) grade, in 5 g, 25 g, 100 g packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with 1,2,3-Benzotriazin-4(3H)-one, 98%?

Yes. Every lot of 1,2,3-Benzotriazin-4(3H)-one, 98% 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 1,2,3-Benzotriazin-4(3H)-one, 98% be shipped internationally?

Yes. 1,2,3-Benzotriazin-4(3H)-one, 98% 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.