Pyrazole derivatives of formula wherein R1 represents C1-C4 alkyl group, C2-C4 alkenyl group or C2-C4 halogenalkenyl group; R2 represents a hydrogen atom, C1-C4 alkyl group, C1-C4 halogenalkyl group or C2-C4 alkoxyalkyl group; X represents C1-C4 alkyl group, C1-C4 halogenalkyl group, C2-C4 alkoxyalkyl group, a halogen atom, C1-C4 alkoxy group or C1-C4 halogenalkyl group; p is an integer of 0, 1 or 2; R3 represents C1-C4 alkyl group, C1-C4 halogenalkyl group, C3-C6 cycloalkyl group, C3-C6 alkenylalkyl group, C3-C6 alkynylalkyl group, C3-C6 halogenalkenylalkyl group or C2-C4 alkoxyalkyl group; each of R4, R5, R6, and R7 independently represents a hydrogen atom, C1-C4 alkyl group, C1-C4 halogenalkyl group or C2-C4 alkoxyalkyl group; n is an integer of 0, 1, or 2 and Q represents a hydrogen atom or group -A-B, wherein A represents where each of R8 and R9 independently represents a hydrogen atom or C1-C4 alkyl group, and B represents C1-C12 alkyl group, C3-C10 cycloalkyl group or group wherein Y represents C1-C4 alkyl group, C1-C4 alkoxy group, C1-C4 halogenalkyl group, nitro group or a halogen atom and m is an integer of 0, 1 or 2; in case except for compounds of formula (I), where p is 1, R3 represents C1-C4 alkyl group, X represents C1-C4 alkyl group, and all of R4, R5, R6, and R7 represent hydrogen atoms, and compounds of formula (I), where p is 2, R3 represents C1-C4 alkyl group, two X represent C1-C4 alkyl groups, and all of R4, R5, R6, and R7 represent hydrogen atoms. 2. Pyrazole derivatives according to Claim 1, where R1 represents C1-C4 alkyl group. 3. Pyrazole derivatives according to Claim 2, where R1 methyl or ethyl. 4. Pyrazole derivatives according to Claim 1, where R2 represents C1-C4 alkyl group. 5. Pyrazole derivatives according to Claim 1, where R3 represents C1-C4 alkyl group, C1-C4 halogenalkyl group, C3-C6 alkenylalkyl group or C3-C6 alkynylalkyl group. 6. Pyrazole derivatives according to Claim 5, where R3 represents methyl, -CH2CH2F. allyl or propargyl 7. Pyrazole derivatives according to Claim 1, where each of R4, R5, R6, and R7 independently represents a hydrogen atom or C1-C4 alkyl group. 8. Pyrazole derivatives according to Claim 1, where p is 1 and X represents C1-C4 alkyl group, C1-C4 halogenalkyl group, a halogen atom or C1-C4 alkoxy group, present as substitute at the ring 5-position of thiochromane. 9. Pyrazole derivatives according to Claim 8, where X represents methyl, trimethylfluoride, a chlorine atom or methoxy. 10. Pyrazole derivatives according to Claim 1, where p is 2 and one of X represents C1-C4 alkyl group, a halogen atom or C1-C4 halogenalkyl group, present as substitute at the ring 5-position of thiochromane, and another X represents a halogen atom, C1-C4 alkoxy group or C1-C4 alkyl group, present as substitute at the ring 8-position of thiochromane. 11. Pyrazole derivatives according to Claim 10, where one of X represents methyl, trimethylfluoride, a chlorine atom or methoxy present as substitute at the ring 5-position of thiochromane, and another X represents a chlorine atom, a fluorine atom, methoxy or methyl, present as substitute at the ring 8-position of thiochromane. 12 Pyrazole derivatives according to Claim 1, where n is 0 or 2. 13. Pyrazole derivatives according to Claim 1, where Q represents a hydrogen atom14. 14. Pyrazole derivatives according to Claim 1, where Q represents group -A-B, where A represents 15. Pyrazole derivatives according to Claim 1, where Q represents group -A-B, where B is selected from the group, including C1-C4 alkyl group, C3-C7 cycloalkyl group or group wherein Y1 represents C1-C4 alkyl group or a halogen atom and m1 is an integer of 0, 1 or 2. 16. Pyrazole derivatives according to Claim 15, where Q represents group -A-B, where B is selected from the group including propyl, cyclohexyl and toluyl. 17. Pyrazole derivatives according to Claim 1, where Q represents group -A-B, where combination A and B represents group, selected from a class, including 18. Pyrazole derivatives according to Claim 1, where Q represents group -A-B, where combination A and B represents group, selected from a class, including and 19. Carboxylic acid of formula (III) wherein X represents C1-C4 alkyl group, C1-C4 halogenalkyl group, C2-C4 alkoxyalkyl group, a halogen atom, C1-C4 alkoxy group or C1-C4 halogenalkoxy group; p is an integer of 0, 1 or 2; R3 represents C1-C4 alkyl group, C1-C4 halogenalkyl group, C3-C6 cycloalkyl group, C3-C6 alkenylalkyl group, C3-C6 alkynylalkyl group, C3-C6 halogenalkenylalkyl group or C2-C4 alkoxyalkyl group; each of R4, R5, R6, and R7 independently represents a hydrogen atom, C1-C4 alkyl group, C1-C4 halogenalkyl group or C2-C4 alkoxyalkyl group; n is an integer of 0, 1, or 2 and in case except for compounds of formula (III), where p is 1, R3 represents C1-C4 alkyl group, X represents C1-C4 alkyl group, and all of R4, R5, R6, and R7 represent hydrogen atoms, and compounds of formula (III), where p is 2, R3 represents C1-C4 alkyl group, two X represent C1-C4 alkyl groups, and all of R4, R5, R6, and R7 represent hydrogen atoms. 20. Herbicide, containing as an active compound pyrazole derivative of general formula by any of the preceding Claims from 1 to 18.
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