Pymetrozine

Also known as: (E)-4,5-dihydro-6-methyl-4-[(3-pyridinylmethylene)amino]-1,2,4-triazin-3(2H)-one, 1,2,4-Triazin-3(2H)-one, 4,5-dihydro-6-methyl-4-[[(1E)-3-pyridinylmethylene]amino]-, 4,5-Dihydro-6-methyl-4-[(E)-(3-pyridinylmethylene)amino]-1,2,4-triazin-3(2H)-one, 6-Methyl-4-{[(E)-pyridin-3-ylmethylene]amino}-4,5-dihydro-1,2,4-triazin-3(2H)-one

Pymetrozine (CAS 123312-89-0) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C10H11N5O and a molecular weight of 217.227 g/mol. Key properties include a melting point of 217ºC, a boiling point of 401.1±37.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 196.4±26.5 °C. It is classified under GHS with signal word Warning and hazard statements H332 — Harmful if inhaled, H351 — Suspected of causing cancer and H412 — Harmful to aquatic life with long lasting effects. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 123312-89-0
Jingsj CID: J-1101177-1
Molecular Formula: C₁₀H₁₁N₅O
Molecular Weight: 217.227 g/mol
Category: Ketones
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	217ºC
Boiling Point	401.1±37.0 °C at 760 mmHg
Density	1.3±0.1 g/cm3
Flash Point	196.4±26.5 °C
Exact Mass	217.096359
PSA	69.95000
LogP	-0.50
Vapor Pressure	0.0±1.0 mmHg at 25°C
Refractive Index	1.665

GHS Safety & Compliance

Irritant / Health HazardSignal word: Warning

H332 — Harmful if inhaled
H351 — Suspected of causing cancer
H412 — Harmful to aquatic life with long lasting effects

Activity & Biological Data

Target	Homoptera[1]
Additional Information	[1]. I D BEDFORD, et al. The effect of Pymetrozine, a feeding inhibitor of Homoptera, in preventing transmission of cauliflower mosaic caulimovirus by the aphid species Myzus persicae (Sulzer). Annals of Applied Biology. 1998 Jun; 132(3): 453-462 [2]. Paul Harrewijn, et al. Pymetrozine, a Fast-Acting and Selective Inhibitor of Aphid Feeding. In-situ Studies with Electronic Monitoring of Feeding Behaviour. Pest Management Science. 1997 Feb;49(2):130-140.

Target

Homoptera[1]

Additional Information

[1]. I D BEDFORD, et al. The effect of Pymetrozine, a feeding inhibitor of Homoptera, in preventing transmission of cauliflower mosaic caulimovirus by the aphid species Myzus persicae (Sulzer). Annals of Applied Biology. 1998 Jun; 132(3): 453-462 [2]. Paul Harrewijn, et al. Pymetrozine, a Fast-Acting and Selective Inhibitor of Aphid Feeding. In-situ Studies with Electronic Monitoring of Feeding Behaviour. Pest Management Science. 1997 Feb;49(2):130-140.

Customs & Trade Information

HS Code	2933699015
Summary	2933699015 4,6-dichloro-n-(2-chlorophenyl)-1,3,5-triazin-2-amine。supervision conditions:s(import or export registration certificate for pesticides)。VAT:17.0%。tax rebate rate:9.0%。MFN tarrif:6.5%。general tariff:20.0%

Frequently Asked Questions

What is the CAS number of Pymetrozine?

The CAS number of Pymetrozine is 123312-89-0.

What are the molecular formula and molecular weight of Pymetrozine?

Pymetrozine has molecular formula C10H11N5O and molecular weight 217.227 g/mol.

Is Pymetrozine hazardous?

Pymetrozine has GHS signal word Warning and hazard statements H332 — Harmful if inhaled; H351 — Suspected of causing cancer; H412 — Harmful to aquatic life with long lasting effects.

What are the upstream and downstream products of Pymetrozine?

For Pymetrozine, Upstream Products: 3-Cyanopyridine, Nickel, 5-Azacytosine.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated: 8/21/2026

How to cite: Jingsj. "Pymetrozine (CAS 123312-89-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1101177-1 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.