Blizzard numbers items as they are created, so the named items next to ID 115468 (115462 to 115476) were usually added in the same batch as Permanent Frost Essence: the same quest line, zone, vendor or reward set.
Crate of OreID 115462 · Trade Goods"Blackrock or True Iron Ore, mined from your garrison's mine."
Elixir of Shadow SightID 115463 · Consumable"Drink this potion near the shrines to Terokk in Spires of Arak to be granted a glimpse into the Shadow Realm."
Lingering Frost EssenceID 115464 · Consumable"The remnant of someone affected by Oru'kai's frost enchant."