Human orexin B (TFA); Arg-Ser-Gly-Pro-Pro-Gly-Leu-Gln-Gly-Arg-Leu-Gln-Arg-Leu-Leu-Gln-Ala-Ser-Gly-Asn-His-Ala-Ala-Gly-Ile-Leu-Thr-Met-NH2.TFA; L-arginyl-L-seryl-glycyl-L-prolyl-L-prolyl-glycyl-L-leucyl-L-glutaminyl-glycyl-L-arginyl-L-leucyl-L-glutaminyl-L-arginyl-L-leucyl-L-leucyl-L-glutaminyl-L-alanyl-L-seryl-glycyl-L-asparagyl-L-histidyl-L-alanyl-L-alanyl-glycyl-L-isoleucyl-L-leucyl-L-threonyl-L-methioninamide trifluoroacetic acid