What is the item description for 2933399981 of HScode Italy?
The description of the item 2933399981 of Italy HScode: "Heterocyclic compounds with nitrogen hetero-atom[s] only, containing an unfused pyridine ring, whether or not hydrogenated, in the structure (excl. pyridine, piperidine, alfentanil ""INN"", anileridine ""INN"", bezitramide ""INN"", bromazepam ""INN"", difenoxin ""INN"", diphenoxylate ""INN"", dipipanone ""INN"", fentanyl ""INN"", ketobemidone ""INN"", methylphenidate ""INN"", pentazocine ""INN"", pethidine ""INN"", pethidine ""INN"" intermediate A, phencyclidine ""INN"" ""PCP"", phenoperidine ""INN"", pipradol ""INN"", piritramide ""INN"", propiram ""INN"", trimeperidine ""INN"", and their salts, and iproniazid ""INN"", ketobemidone hydrochloride ""INNM"", pyridostigmine bromide ""INN"", 2,3,5,6-tetrachloropyridine, 3,6-dichloropyridine-2-carboxylic acid, 2-hydroxyethylammonium-3,6-dichloropyridine-2-carboxylate, 2-butoxyethyl""3,5,6-trichloro-2-pyridyloxy""acetate, 3,5-dichloro-2,4,6-trifluoropyridine, fluroxypyr ""ISO"" methyl ester, 4-methylpyridine, and inorganic or organic compounds of mercury) : 4-Hydroxy-3-pyridinesulphonic acid (CAS RN 51498-37-4) with a purity by weight of 98 % or more"