| Title:  Monorden CAS Registry Number:  12772-57-5 CAS Name:  8-Chloro-1a,14,15,15a-tetrahydro-9,11-dihydroxy-14-methyl-6H-oxireno[e][2]benzoxacyclotetradecin-6,12(7H)-dione Additional Names:  5-chloro-6-(7,8-epoxy-10-hydroxy-2-oxo-3,5-undecadienyl)-b-resorcylic acid m-lactone;  radicicol Molecular Formula:  C18H17ClO6 Molecular Weight:  364.78 Percent Composition:  C 59.27%, H 4.70%, Cl 9.72%, O 26.32% Literature References:  Antibiotic substance from Monosporium bonorden:  Delmotte, Delmotte-Plaquée, Nature 171, 344 (1953).  Identity with radicicol:  Mirrington et al., Tetrahedron Lett. 1964, 365.  Structure:  McCapra, Scott, ibid. 1964, 869; Mirrington et al., Aust. J. Chem. 19, 1265 (1966).  Isoln:  NL 6506173 (1965 to Sandoz). Properties:  Crystals from chloroform, alcohol or benzene, mp 193.5°.  [a]D20 +203° (chloroform).  uv max (ethanol):  264, 272 nm (e 13200, 13100). Melting point:  mp 193.5° Optical Rotation:  [a]D20 +203° (chloroform) Absorption maximum:  uv max (ethanol):  264, 272 nm (e 13200, 13100)   Derivative Type:  Diacetate  Molecular Formula:  C22H21ClO8 Molecular Weight:  448.85 Percent Composition:  C 58.87%, H 4.72%, Cl 7.90%, O 28.52% Properties:  Crystals, mp 189°.  uv max:  275 nm (e 13000). Melting point:  mp 189° Absorption maximum:  uv max:  275 nm (e 13000)   |