220365 <common-name>[(1s,3e,5r)-3-[(2e)-2-[(1r,3as,7ar)-1-[(e,2r,5r)-5,6-dimethylhept-3-en-2-yl]-7a-methyl-2,3,3a,5,6,7-hexahydro-1h-inden-4-ylidene]ethylidene]-5-[tert-butyl(dimethyl)silyl]oxy-2-methylidenecyclohexyl]oxy-tert-butyl-dimethylsilane</common-name> <description>[(1s,3e,5r)-3-[(2e)-2-[(1r,3as,7ar)-1-[(e,2r,5r)-5,6-dimethylhept-3-en-2-yl]-7a-methyl-2,3,3a,5,6,7-hexahydro-1h-inden-4-ylidene]ethylidene]-5-[tert-butyl(dimethyl)silyl]oxy-2-methylidenecyclohexyl]oxy-tert-butyl-dimethylsilane belongs to the vitamin d and derivatives, a subclass of steroids and steroid derivatives within the organic compounds. It is categorized under the superclass of lipids and lipid-like molecules and has the formula C40H72O2Si2. With an average molecular weight of 641.20 g/mol, [(1s,3e,5r)-3-[(2e)-2-[(1r,3as,7ar)-1-[(e,2r,5r)-5,6-dimethylhept-3-en-2-yl]-7a-methyl-2,3,3a,5,6,7-hexahydro-1h-inden-4-ylidene]ethylidene]-5-[tert-butyl(dimethyl)silyl]oxy-2-methylidenecyclohexyl]oxy-tert-butyl-dimethylsilane is a heavy molecule.</description> <cas>111594-58-2</cas> <pubchem-id>11125102</pubchem-id> <chemical-formula>C40H72O2Si2</chemical-formula> <weight>641.2</weight> <appearance nil="true"/> <melting-point nil="true"/> <boiling-point nil="true"/> <density nil="true"/> <solubility nil="true"/> <specific-gravity nil="true"/> <flash-point nil="true"/> <vapour-pressure nil="true"/> <route-of-exposure nil="true"/> <target nil="true"/> <mechanism-of-toxicity nil="true"/> <metabolism nil="true"/> <toxicity nil="true"/> <lethaldose nil="true"/> <carcinogenicity nil="true"/> <use-source nil="true"/> <min-risk-level nil="true"/> <health-effects nil="true"/> <symptoms nil="true"/> <treatment nil="true"/> <created-at type="dateTime">2026-08-22T14:06:56Z</created-at> <updated-at type="dateTime">2026-08-22T14:06:56Z</updated-at> <interacting-proteins nil="true"/> <wikipedia nil="true"/> <uniprot-id nil="true"/> <kegg-compound-id nil="true"/> <omim-id nil="true"/> <chebi-id nil="true"/> <biocyc-id nil="true"/> <ctd-id nil="true"/> <stitch-id nil="true"/> <drugbank-id nil="true"/> <pdb-id nil="true"/> <actor-id nil="true"/> <organism nil="true"/> <export type="boolean">true</export> <metabolizing-proteins nil="true"/> <transporting-proteins nil="true"/> <moldb-smiles nil="true"/> <moldb-formula>C40H72O2Si2</moldb-formula> <moldb-inchi>InChI=1S/C40H72O2Si2/c1-28(2)29(3)19-20-30(4)35-23-24-36-32(18-17-25-40(35,36)12)21-22-33-26-34(41-43(13,14)38(6,7)8)27-37(31(33)5)42-44(15,16)39(9,10)11/h19-22,28-30,34-37H,5,17-18,23-27H2,1-4,6-16H3/b20-19+,32-21+,33-22+/t29-,30+,34+,35+,36-,37-,40+/m0/s1</moldb-inchi> <moldb-inchikey>UHCDRCBBCZLXBO-BTKCQVIHSA-N</moldb-inchikey> <moldb-average-mass type="decimal">641.2</moldb-average-mass> <moldb-mono-mass type="decimal">640.5070846</moldb-mono-mass> <origin nil="true"/> <state nil="true"/> <logp nil="true"/> <hmdb-id nil="true"/> <chembl-id nil="true"/> <chemspider-id nil="true"/> <structure-image-file-name nil="true"/> <structure-image-content-type nil="true"/> <structure-image-file-size type="integer" nil="true"/> <structure-image-updated-at type="dateTime" nil="true"/> <biodb-id nil="true"/> <synthesis-reference nil="true"/> <structure-image-caption nil="true"/> <chemdb-id>CHEM216258</chemdb-id> <dsstox-id nil="true"/> <toxcast-id nil="true"/> <stoff-ident-origin nil="true"/> <stoff-ident-id nil="true"/> <susdat-id nil="true"/> <iupac>[(1S,3E,5R)-3-[(2E)-2-[(1R,3aS,7aR)-1-[(E,2R,5R)-5,6-dimethylhept-3-en-2-yl]-7a-methyl-2,3,3a,5,6,7-hexahydro-1H-inden-4-ylidene]ethylidene]-5-[tert-butyl(dimethyl)silyl]oxy-2-methylidenecyclohexyl]oxy-tert-butyl-dimethylsilane</iupac> <moldb-polar-surface-area nil="true"/> <moldb-refractivity nil="true"/> <moldb-polarizability nil="true"/> <moldb-rotatable-bond-count nil="true"/> <moldb-acceptor-count nil="true"/> <moldb-donor-count nil="true"/> <moldb-pka-strongest-acidic nil="true"/> <moldb-pka-strongest-basic nil="true"/> <moldb-physiological-charge nil="true"/> <moldb-number-of-rings nil="true"/> <moldb-alogps-logp nil="true"/> <moldb-alogps-logs nil="true"/> <moldb-alogps-solubility nil="true"/> <kingdom>Organic compounds</kingdom> <superklass>Lipids and lipid-like molecules</superklass> <klass>Steroids and steroid derivatives</klass> <subklass>Vitamin D and derivatives</subklass> <paper-count type="integer">0</paper-count> <sync-id>CED0168484</sync-id> <structure-inchikey nil="true"/> <structure-fingerprint nil="true"/> <structure-pattern-fingerprint nil="true"/> <structure-pickle type="binary" nil="true" encoding="base64"/> <structure-indexed-at type="dateTime" nil="true"/> </compound>