M1 ESP 5w30 is 507.00 certified and available at Pep Girls as mentioned, Castrol SLX Longlife III is available at the stealership (typically not terribly expensive, especially if you buy a case of 12 liters), Amsoil has their meets-or-exceeds "507.00" oil and you could also consider the MB 229.51 approved Mobil 1 ESP Formula M 5w40 also from Pep Girls.
But there's absolutely no need to use 507.00 in a non-commonrail TDI. Use of 5w30 diesel oils in previous generation TDIs has also shown unacceptable wear metal generation and in the PD engines drastically shortened cam/lifter life. Unless you have a CR, stick with Shell Rotella T6, Mobil 1 TDT, Schaeffer 9000 or similar.