Editing Pyrethrin (section)

==Chemistry==

{| class="wikitable"
|+Physical and chemical properties of some pyrethrins.

! Group
! colspan=3 align="center" |'''Pyrethrin I'''
! colspan=3 align="center" | '''Pyrethrin II'''
|-bgcolor="#EFEFEF"
| align="left" | Chemical compound
| Pyrethrin&nbsp;I<ref>{{PubChem|5281045}}</ref><ref name=":0">"Pyrethrins or Pyrethrum". In: {{cite book |doi=10.1016/B978-1-4557-3148-0.00016-9 |chapter=P |title=Sittig's Handbook of Pesticides and Agricultural Chemicals |date=2015 |last1=Pohanish |first1=Richard P. |pages=629–724 |isbn=978-1-4557-3148-0 }}</ref>
| Cinerin&nbsp;I<ref>{{Cite web|last=PubChem|title=Cinerin I|url=https://pubchem.ncbi.nlm.nih.gov/compound/5281547|access-date=2021-10-26|website=pubchem.ncbi.nlm.nih.gov|language=en}}</ref><ref name=":0" />
| Jasmolin&nbsp;I<ref>{{PubChem|12304687}}</ref>
| Pyrethrin&nbsp;II<ref>{{Cite web|last=PubChem|title=Pyrethrin II|url=https://pubchem.ncbi.nlm.nih.gov/compound/5281555|access-date=2021-10-26|website=pubchem.ncbi.nlm.nih.gov|language=en}}</ref><ref name=":0" />
| Cinerin&nbsp;II<ref>{{PubChem|5281548}}</ref><ref name=":0" />
| Jasmolin&nbsp;II<ref>{{PubChem|12304690}}</ref>
|-
| align="left" | Chemical structure
| [[File:Pyrethrin-I-2D-skeletal.svg|120px|Pyrethrin I]]
| [[File:Cinerin-I-2D-skeletal.svg|120px|Cinerin I]]
| [[File:Jasmolin-I-2D-skeletal.svg|120px|Jasmolin I]]
| [[File:Pyrethrin-II-2D-skeletal.svg|120px|Pyrethrin II]]
| [[File:Cinerin-II-2D-skeletal.svg|120px|Cinerin II]]
| [[File:Jasmolin-II-2D-skeletal.svg|120px|Jasmolin II]]
|-bgcolor="#EFEFEF"
| align="left" | Chemical formula
| C<sub>21</sub>H<sub>28</sub>O<sub>3</sub>
| C<sub>20</sub>H<sub>28</sub>O<sub>3</sub>
| C<sub>21</sub>H<sub>30</sub>O<sub>3</sub>
| C<sub>22</sub>H<sub>28</sub>O<sub>5</sub>
| C<sub>21</sub>H<sub>28</sub>O<sub>5</sub>
| C<sub>22</sub>H<sub>30</sub>O<sub>5</sub>
|-
| align="left" | Molecular mass (g/mol)
| align="center" |328.4
| align="center" |316.4
| align="center" |330.5
| align="center" |372.5
| align="center" |360.4
| align="center" |374.5
|-bgcolor="#EFEFEF"
| align="left" | Boiling point (°C)
| align="center" |170
| align="center" |137
| align="center" |?
| align="center" |200
| align="center" |183
| align="center" |?
|-
| align="left" | Vapor pressure at&nbsp;25&nbsp;°C (mmHg)
| align="center" |{{val|2.03|e=-5}}
| align="center" |{{val|1.13|e=-6}}
| align="center" |?
| align="center" |{{val|3.98|e=-7}}
| align="center" |{{val|4.59|e=-7}}
| align="center" |?
|-bgcolor="#EFEFEF"
| align="left" | Solubility in water (mg/L)
| align="center" |0.2
| align="center" |0.085
| align="center" |?
| align="center" |9.0
| align="center" |0.03
| align="center" |?
|}