22,23-Didehydro Selamectin

CAS: 165108-09-8

Ref. TR-D439445

Product Information

• Name: 22,23-Didehydro Selamectin
• Synonyms: Avermectin A1a, 25-cyclohexyl-4'-O-de(2,6-dideoxy-3-O-methyl-a-L-arabino-hexopyranosyl)-5-demethoxy-25-de(1-methylpropyl)-5-(hydroxyimino)- (9CI), (5EZ)-22,23-Didehydroselamectin, (2aE,2'S,4E,5'S,6S,6'R,7S,8E,11R,15S,17aR,20EZ,20aR,20bS)-6'-cyclohexyl-7-[(2,6-dideoxy-3-O-methyl-a-L-arabino-hexopyranosyl)oxy]-20b-hydroxy-20-(hydroxyimino)-5',6,8,19-tetramethyl-5',6,6',7,10,11,14,15,17a,20,20a,20b-dodecahydrospiro[2H,17H-11,15-methanofuro[4,3,2-pq][2,6]benzodioxacyclooctadecine-13,2'-pyran]-17-one, (5EZ,25R)-25-cyclohexyl-4'-O-de(2,6-dideoxy-3-O-methyl-a-L-arabino-hexopyranosyl)-5-demethoxy-25-de(1-methylpropyl)-5-(hydroxyimino)avermectin A1a
• CAS: 165108-09-8

Description

Impurity Selamectin Impurity B
Stability Hygroscopic
Applications 22,23-Didehydro Selamectin is an impurity of Selamectin (S247990) which is a topical parasiticide. Selamectin (S247990) is also used as a veterinary antihelminithic agent on animals.
References Eshar, D., et al.: J. Am. Veterin. Med. Association., 241, 1056 (2012); Geis-Asteggiante, L., et al.: J. Chromatograph., 1258, 43 (2012);

• Brand: TRC

Chemical properties

• Molecular weight: 767.94
• Formula: C₄₃H₆₁NO₁₁
• Color/Form: Neat
• InChI: InChI=1S/C43H61NO11/c1-24-11-10-14-30-23-50-40-36(44-48)27(4)19-33(43(30,40)47)41(46)52-32-20-31(16-15-25(2)38(24)53-35-21-34(49-6)37(45)28(5)51-35)54-42(22-32)18-17-26(3)39(55-42)29-12-8-7-9-13-29/h10-11,14-15,17-19,24,26,28-29,31-35,37-40,45,47-48H,7-9,12-13,16,20-23H2,1-6H3/b11-10+,25-15+,30-14+,44-36?/t24-,26-,28-,31+,32-,33-,34-,35-,37-,38-,39-,40+,42+,43+/m0/s1
• SMILES: CO[C@H]1C[C@H](O[C@@H]2/C(C)=C/C[C@@H]3C[C@@H](C[C@]4(C=C[C@H](C)[C@@H](C5CCCCC5)O4)O3)OC(=O)[C@@H]3C=C(C)/C(=N/O)[C@H]4OC/C(=C\C=C\[C@@H]2C)[C@@]34O)O[C@@H](C)[C@@H]1O.CO[C@H]1C[C@H](O[C@@H]2/C(C)=C/C[C@@H]3C[C@@H](C[C@]4(C=C[C@H](C)[C@@H](C5CCCCC5)O4)O3)OC(=O)[C@@H]3C=C(C)/C(=N\O)[C@H]4OC/C(=C\C=C\[C@@H]2C)[C@@]34O)O[C@@H](C)[C@@H]1O