# US 4,391,630 A · Cyano-(4-cyanophenyl)methyl ethyl ester of carbonic acid useful as an agent for selective control of barnyard grass

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 4,391,630 A
- Document ID: US4391630A
- Status: Granted
- Kind: A
- Application number: 06/354,480
- Filed: 1982-03-03
- Granted: 1983-07-05
- Earliest claimed: 1982-03-03
- Assignees: The Dow Chemical Company
- Inventors: Andrew T. Au
- Web page: https://patentgrep.com/patent/US4391630A

## CPC

- C07C 255/00: Carboxylic acid nitriles (cyanogen or compounds thereof C01C3/00)
- A01N 47/06: containing —O—CO—O— groups; Thio analogues thereof
- C07C: ACYCLIC OR CARBOCYCLIC COMPOUNDS
- A01N: PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF (preservation of food or foodstuff A23); BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES (preparations for medical, dental or toiletry purposes which kill or prevent the growth or proliferation of unwanted organisms A61K); PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS

## Abstract

Disclosed as a novel compound is cyano-(4-cyanophenyl)methyl ethyl ester of carbonic acid. This compound has utility as an agent for selective control of barnyard grass.

## Claims

### Claim 1

Cyano-(4-cyanophenyl)methyl ethyl ester of carbonic acid.

### Claim 2 (depends on 1)

A method of selectively controlling barnyard grass which comprises subjecting barnyard grass to the compound of claim 1.

### Claim 3 (depends on 1)

A herbicidal composition comprising an inert horticultural carrier and as a herbicide, the compound of claim 1, the concentration of said herbicide being from 0.0001 to about 50 percent by weight.