Meaning of the Sanskrit Word: brahmanasya

  brāhmaṇasya—of the man who knows the Supreme Brahman    Bg 2.46
  brāhmaṇasya—of the brāhmaṇa    SB 3.16.8
  brāhmaṇasya—of a brāhmaṇa    SB 5.26.19

Can't find any compound Sanskrit words containing brahmanasya.