TRIPTONIDE;TRIPTONIDE(PRIMARY STANDARD);NSC 165677;PG 492;(3bS,4aS,5aS,6aS,7aS,7bS,8aS,8bS)-6a-Isopropyl-8b-methyl-3b,4,4a,7a,7b,8b,9,10-octahydrotrisoxireno[4b,5:6,7:8a,9]phenanthro[1,2-c]furan-1,6(3H,6aH)-dione;14-Deoxy-14-oxotriptolide;Triptolide,14-deoxy-14-oxo;Triptonide, 98%, from Peucedanum praeruptorum Dunn