Structural formula
| Business number | 05C8 |
|---|---|
| Molecular formula | C13H14O5 |
| Molecular weight | 250.25 |
| label |
4,6-Dihydro-8-hydroxy-3,4,5-trimethyl-6-oxo-3H-2-benzopyran-7-carboxylic acid, Milbeknock, Mibemectin, Milbimycin; pieteromycin; milbimycin, Insecticide and acaricide |
Numbering system
CAS number:518-75-2
MDL number:MFCD00006912
EINECS number:208-257-2
RTECS number:DJ2275000
BRN number:5282243
PubChem ID:None
Physical property data
1. Characteristics: Undetermined
2. Density (g/ cm3, 25/4℃): Undetermined
3. Relative Vapor density (g/cm3, air=1): Undetermined
4. Melting point (ºC): 175
5. Boiling point (ºC, Normal pressure): Undetermined
6. Boiling point (ºC, 8kPa): Undetermined
7. Refractive index: Undetermined
8. Flash point ( ºF): Undetermined
9. Specific optical rotation (º): Undetermined
10. Autoignition point or ignition temperature (ºC): Undetermined
11. Vapor pressure (kPa, 25ºC): Undetermined
12. Saturated vapor pressure (kPa, 60ºC): Undetermined
13. Heat of combustion (KJ/mol): Undetermined
14. Critical temperature (ºC): Undetermined
15. Critical pressure (KPa): Undetermined
16. Oil and water (octanol/ Log value of the distribution coefficient of water): Undetermined
17. Explosion upper limit (%, V/V): Undetermined
18. Explosion lower limit (%, V/V): Undetermined
19. Solubility: Soluble in methanol, ethanol, acetone, ethyl acetate, benzene, n-hexane, etc.
Toxicological data
None yet
Ecological data
This substance may be harmful to the environment, and special attention should be paid to water bodies.
Molecular structure data
1. Molar refractive index: 61.73
2. Molar volume (cm3/mol): 181.5
3. Isotonic specific volume (90.2K ): 496.4
4. Surface tension (dyne/cm): 55.9
5. Polarizability (10-24cm3): 24.47
Compute chemical data
1. Reference value for hydrophobic parameter calculation (XlogP): 2
2. Number of hydrogen bond donors: 2
3. Number of hydrogen bond acceptorsAmount: 5
4. Number of rotatable chemical bonds: 0
5. Number of tautomers: 11
6. Topological molecule polar surface area ( TPSA): 83.8
7. Number of heavy atoms: 18
8. Surface charge: 0
9. Complexity: 532
10. The number of isotope atoms: 0
11. The number of determined atomic stereocenters: 2
12. The number of uncertain atomic stereocenters: 0
13. Determined number of stereocenters of chemical bonds: 0
14. Uncertain number of stereocenters of chemical bonds: 0
15. Number of covalent bond units: 1
Properties and stability
Use and store according to specifications, no decomposition will occur, and avoid contact with oxides
Storage method
Store at 1.2-8°C in a cool, dry and well-ventilated warehouse. Keep away from fire and heat sources. Protect from direct sunlight. The packaging is sealed. They should be stored separately from acids and food chemicals, and avoid mixed storage. Suitable materials should be available in the storage area to contain spills.
Synthesis method
1. It is a metabolite of the actinomycete Streptomyces hygroscopicus var.aureolacrimosus isolated from soil in 1974 by Sankyo Co., Ltd. of Japan. Its products are produced by culturing, fermenting and processing bacteria.
Purpose
1. Microbial source insecticide and acaricide has the same mode of action as abamectin, but citrinin has a narrower insecticidal spectrum. It is mainly used to control various harmful mites on fruit trees (such as citrus, etc.). It is highly effective against spider mites and panonychus mites, but has poor activity against eggs. The recommended dosage for preventing and treating mites is 5.6-28g/hm2. Adding mineral oil to the preparation can increase the permeability and improve the ovicidal activity against mite eggs.
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