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Primary Examiner: Hollrah, Glennon H.
Assistant Examiner:
Attorney: Hueschen; Gordon W.

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Title: N-(2-Chloro-4-pyridyl)ureas

Abstract: N-(2-Chloro-4-pyridyl)ureas represented by the formula (I): ##STR1## wherein R.sub.1 represents hydrogen or alkyl, R.sub.2 represents an aromatic group, especially phenyl, which may be substituted by alkyl, alkoxyl, hydroxyl or halogen, and X is oxygen or sulfur, and acid addition salts thereof, useful as plant growth regulators, are disclosed. Method of making and using same and agricultural compositions thereof are also disclosed.

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Inventors: Shudo, Koichi
Okamoto, Toshihiko
Isogai, Yo
Takahashi, Soshiro

Application Number: 947468
Filing Date: 1978-10-02
Publication_date: 1980-03-18
Assignee:
Primary Class(es): 504/210 546/265, 546/305, 546/306
Other Classes:
US Patent Ref:

3330641	Jul, 1967	Woods et al.	71/94.
3335142	Aug, 1967	Hardy et al.	546/265.
3426031	Feb, 1969	Fischback	546/306.
3682934	Aug, 1972	Martin et al.	71/94.
3687959	Aug, 1972	Zielinski	71/94.
3705170	Dec, 1972	Torba	71/94.
3992391	Nov, 1976	Uno et al.	546/305.
4149872	Apr, 1979	Pilgram	546/292.

Other Refs: Other References: Deutsche Gold et al., "Substituted Pyridylureas." (1965), CA 65, pp. 15340-15341 (1966).