DIETHOFENCARB

Description

Diethofencarb (in this card under registration number CAS 87130-88-9) belongs to the same class of substances as diethofencarb CAS 87130-20-9: a systemic phenylcarbamate fungicide (FRAC code 10) used for the control of gray mold of Botrytis cinerea, including benzimidazole-resistant strains. fungicides. The formula C14H21NO4 matches the main registration number of the substance; a separate CAS is assigned as an alternative identifier for the same substance. Synonyms according to the supplier's catalog: Powmyl, Sumiko.

Basic Attributes

• CAS No: 87130-88-9
• Chemical formula: C14H21NO4
• Molecular Weight: 267.32
• Exact weight: 267.147
• PSA specifications: 56.8
• XLogP3: 2.9

Physico-chemical characteristics

• Density: 1.100 ± 0.06 g/cm3 (predicted value)
• Storage conditions: 0–6 °C

Mechanism of action

As with diethofencarb under the major CAS, the mechanism is associated with inhibition of beta-tubulin assembly and disruption of fungal cell mitosis; Some sources also describe the suppression of the biosynthesis of phospholipids and fatty acids. The action is systemic, with a protective and healing effect.

An important practical consequence of this mechanism is negative cross-resistance with benzimidazole fungicides: strains resistant to benomyl and carbendazim due to mutation of beta-tubulin remain sensitive to diethofencarb. This property justifies the use of the substance in tank mixtures, and not as an independent product.

Scope of application

It is used as an active ingredient in fungicidal preparations against gray rot on grapes, vegetables, fruits and ornamental crops, mainly in a mixture with carbendazim to cover both types of pathogen resistance. Delivery forms: wettable powder, suspension concentrate.

The requirement for a reduced storage temperature (0–6 °C) distinguishes this batch from a typical warehouse regime and indicates increased requirements for the stability of the active substance upon delivery; This should be taken into account when planning logistics and storage capacity.

Like the related carbendazim-compatible fungicide under CAS 87130-20-9, the substance is applied either preventively before the onset of gray rot epiphytotics, or at the very beginning of the onset of symptoms - due to its systemic nature, diethofencarb has time to distribute throughout the plant tissues and suppress the further development of the infection.

Storage and transportation conditions

Store at 0–6 °C in the original tightly closed container, in a dry, dark place, away from food and feed. Work with gloves, avoid dust and contact with water bodies - by analogy with the main registration number, the substance is toxic to fish and aquatic invertebrates.

Attention to card duplication

The product is registered under a separate CAS number relative to card 33845 (Diethofencarb, CAS 87130-20-9) with an identical chemical formula; The decision to merge cards is up to the user. The exact and molecular mass in the two cards diverge in the third digit (267.32 versus the exact mass 267.147 here), which is typical for different sources of isotopic composition calculations and is not a sign of a different substance.