eprinomectin eprinomectin eprinomectin is an avermectin used as a veterinary topical endectocide. it is a mixture of two chemical compounds, eprinomectin b1a and b1b. eprinomectin b1aclinical datatrade nameseprinexother namesmk-397, 4"-epi-acetylamino-4"-deoxy-avermectin b1a (4"r)-4"-(acetylamino)-5-o-demethyl-4"-deoxyavermectin a1alicense data us dailymed: eprinomectin routes ofadministrationtopicalatcvet codeqp54aa04 (who) legal statuslegal status us: otc pharmacokinetic databioavailability29%protein binding>99%onset of action24 hourselimination half-life8–36 daysduration of action7–10 daysexcretionfeces (17–19.8%), urine (0.35%), milk (0.32–0.54%)identifiers iupac name n--21',24'-dihydroxy-3,11',13',22'-tetramethyl-2'-oxospiropentacosa-10,14,16,22-tetraene]-12'-yl]oxy-4-methoxy-2-methyloxan-3-yl]oxy-4-methoxy-2-methyloxan-3-yl]acetamide cas number133305-88-1pubchem cid6444397chemspider16736607unii00oy54d31ckeggd04037chemical and physical dataformulac50h75no14molar mass914.143 g·mol−13d model (jsmol)interactive image smiles cc(c)1(c=c2(o1)c3c(o2)c/c=c(/((/c=c/c=c/4\co54((c=c(5o)c)c(=o)o3)o)c)o6c(((o6)c)o7c(((o7)c)nc(=o)c)oc)oc)\c)c inchi inchi=1s/c50h75no14/c1-12-26(2)45-29(5)18-19-49(65-45)24-36-21-35(64-49)17-16-28(4)44(27(3)14-13-15-34-25-58-47-43(53)30(6)20-37(48(54)61-36)50(34,47)55)62-41-23-39(57-11)46(32(8)60-41)63-40-22-38(56-10)42(31(7)59-40)51-33(9)52/h13-16,18-20,26-27,29,31-32,35-47,53,55h,12,17,21-25h2,1-11h3,(h,51,52)/b14-13+,28-16+,34-15+/t26-,27-,29-,31-,32-,35+,36-,37-,38-,39-,40-,41-,42+,43+,44-,45+,46-,47+,49+,50+/m0/s1key:zkwqqxzucobise-crtgxidzsa-n eprinomectin b1bclinical dataother names4"-epi-acetylamino-4"-deoxy-avermectin b1batc codep54aa04 (who) identifiers iupac name n-pentacosa-10,14,16,22-tetraene]-12'-yl]oxy-4-methoxy-2-methyloxan-3-yl]oxy-4-methoxy-2-methyloxan-3-yl]acetamide cas number133305-89-2pubchem cid20055319chemspider16736608unii31oml2qz0qkeggd04037chemical and physical dataformulac49h73no14molar mass900.116 g·mol−13d model (jsmol)interactive image smiles c1/c=c/c=c/2\co32((c=c(3o)c)c(=o)o4c(c/c=c(/1o5c(((o5)c)o6c(((o6)c)nc(=o)c)oc)oc)\c)o7(c4)c=c((o7)c(c)c)c)o inchi inchi=1s/c49h73no14/c1-25(2)43-28(5)17-18-48(64-43)23-35-20-34(63-48)16-15-27(4)44(26(3)13-12-14-33-24-57-46-42(52)29(6)19-36(47(53)60-35)49(33,46)54)61-40-22-38(56-11)45(31(8)59-40)62-39-21-37(55-10)41(30(7)58-39)50-32(9)51/h12-15,17-19,25-26,28,30-31,34-46,52,54h,16,20-24h2,1-11h3,(h,50,51)/b13-12+,27-15+,33-14+/t26-,28-,30-,31-,34+,35-,36-,37-,38-,39-,40-,41+,42+,43+,44-,45-,46+,48+,49+/m0/s1key:wpnhohprxxcpra-fztowwrosa-n