Cymoxanil is a fungicide applied as a seed treatment or as a foliar application to the plants to control late blight.

 Toxicity

The IUPAC name of Cymoxanil is (1E)-2-(ethylcarbamoylamino)-N-methoxy-2-oxoethanimidoyl cyanide. With the CAS registry number 57966-95-7, it is also named as 2-Cyano-N-((ethylamino)carbonyl)-2-(methoxyimino)acetamide. The classification codes are Agricultural Chemical and Fungicide, bactericide, wood preservative. It is white crystal that the solubility at 25 °C is as follows: acetone 10.5%, dimethylformamide 18.5%, chloroform 10.3%, methanol 4.1%, benzene 0.2%, hexane 0.1%, water 0.1%. When heated to decomposition it emits toxic vapors of NO_x. Additioanlly, this chemical should be stored at the temperature of 0-6 °C.

The other characteristics of this product can be summarized as: (1)ACD/LogP: 0.67; (2)# of Rule of 5 Violations: 0; (3)ACD/LogD (pH 5.5): -0.21; (4)ACD/LogD (pH 7.4): -1.26; (5)ACD/BCF (pH 5.5): 1; (6)ACD/BCF (pH 7.4): 1; (7)ACD/KOC (pH 5.5): 7.25; (8)ACD/KOC (pH 7.4): 1; (9)#H bond acceptors: 7; (10)#H bond donors: 2; (11)#Freely Rotating Bonds: 3; (12)Index of Refraction: 1.537; (13)Molar Refractivity: 48.6 cm³; (14)Molar Volume: 155.5 cm³; (15)Polarizability: 19.26×10^-24 cm³; (16)Surface Tension: 46.6 dyne/cm; (17)Rotatable Bond Count: 3; (18)Tautomer Count: 5; (19)Exact Mass: 198.07529; (20)MonoIsotopic Mass: 198.07529; (21)Topological Polar Surface Area: 104; (22)Heavy Atom Count: 14; (23)Complexity: 301.

Preparation of Cymoxanil: N-Ethylurea, cyanoacetic acid and acetic anhydride react to get N-cyanide acetoxy-N-ethylurea. N-cyanide acetoxy-N-ethylurea reacts with sodium nitrite to obtain 2-cyano-2-oximido-acetamide sodium salt. Then slowly adding dimethyl sulfate to 2-cyano-2-oximido-acetamide sodium salt, and continuing to adjust pH with the 50% NaOH solution. The reaction reacts at the pH value of 7-8 to get Cymoxanil.

Uses of Cymoxanil: It is an effective fungicide. It is used to control the downy mildew and late blight of tomato, cucumber, grape and other crops.

When you are using this chemical, please be cautious about it as the following:
It is not only harmful if swallowed, but also very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment. And it may cause sensitization by skin contact. If you want to contact this product, you must wear suitable protective clothing and gloves. This material and its container must be disposed of as hazardous waste. Avoid release to the environment. Refer to special instructions / safety data sheets. 

People can use the following data to convert to the molecule structure.
1. SMILES:N#CC(=NOC)C(=O)NC(=O)NCC
2. InChI: InChI=1/C7H10N4O3/c1-3-9-7(13)10-6(12)5(4-8)11-14-2/h3H2,1-2H3,(H2,9,10,12,13) 
3. InChIKey:XERJKGMBORTKEO-UHFFFAOYAJ

The following are the toxicity data which has been tested.