Name | methoprotryne |
Synonyms | g36393 G 36393 Gesaran 25 methoprotryne Methoproptryne Methoprothryne Methoproteryne epapesticidecodechemical509200 |
CAS | 841-06-5 |
EINECS | 212-664-0 |
InChI | InChI=1/C11H21N5OS/c1-8(2)13-10-14-9(12-6-5-7-17-3)15-11(16-10)18-4/h8H,5-7H2,1-4H3,(H2,12,13,14,15,16) |
Molecular Formula | C11H21N5OS |
Molar Mass | 271.38 |
Density | 1.186 g/cm3 (20℃) |
Melting Point | 68-70℃ (ligroine ) |
Boling Point | 444.1±47.0 °C(Predicted) |
Flash Point | 222.4°C |
Water Solubility | 0.32g/L(20 ºC) |
Vapor Presure | 4.39E-08mmHg at 25°C |
Appearance | neat |
BRN | 616626 |
pKa | 3?+-.0.41(Predicted) |
Storage Condition | 0-6°C |
Refractive Index | 1.5430 (estimate) |
Hazard Symbols | Xn - Harmful |
Risk Codes | R22 - Harmful if swallowed R36/38 - Irritating to eyes and skin. |
Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S28 - After contact with skin, wash immediately with plenty of soap-suds. S24/25 - Avoid contact with skin and eyes. S22 - Do not breathe dust. |
UN IDs | UN 2020 6.1/PG 3 |
WGK Germany | 3 |
RTECS | SK8800000 |
EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
properties | trimethoprim is a post-emergence herbicide with a solubility of 320mg/L in water, soluble in most organic solvents, stable in normal state, non-corrosive. |
preparation | under nitrogen atmosphere, the substrate triazine 4j(0.2mmol, 40.2mg),KSAc(0.6mmol,68.4mg),DMC(1.0mmol,90mg),Pd(OAc)2(0.01mmol,2.3mg),PPh3 (0.02mmol,5.9mg),tBuOK(0.6mmol,69.2mg),and DMSO(2.0mL). The reaction system was heated to 120 °c for reaction. After completion of the reaction by TLC, the system was cooled to room temperature. The reaction was quenched with saturated aqueous ammonium chloride solvent, extracted with ethyl acetate (3*10ml), and purified by column chromatography to give product 5j 52.5mg(97%).Rf = 0.30 (petroleum ether: ethyl acetate = 5:1);1H NMR(400MHz,DMSO-d6): Δ7.11-6.71(m,2H),4.13-3.97(m,1H),3.36(t,J = 4.8Hz,2H),3.28-3.26(m,2H),2.37(s,3H),1.76-1.71(m,2H),1.12(d,J = 5.2Hz,6h);13C NMR(400MHz, dmso‐d6):δ177.6,163.4,162.5,69.1,57.1,40.8,36.7,28.4,21.5,11.3;IR (pure) 3135,2970,2918,1525,1412,1173,1118,807cm‐1;HRMS(EI) calculated C11H21N5OS 271.1467, theoretical 271.1469. |
toxicity | rats acute oral LD50>5000mg/kg, low toxicity to fish. |
category | pesticide |
toxicity grade | poisoning |
Acute toxicity | oral-rat LD50: 5000 mg/kg; Oral-mouse LD50: 2400 mg/kg |
flammability hazard characteristics | toxic sulfur oxide and nitrogen oxide gases from combustion |
storage and transportation characteristics | The warehouse is ventilated and dried at low temperature; It is stored and transported separately from food raw materials |
extinguishing agent | dry powder, foam, sand |
toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |