Dilaudid (71-68-1) was first synthesized and researched in Germany in 1924 and introduced to the mass market by Knoll in 1926 under the brand name Dilaudid indicating its derivation and degree of similarity to morphine (by way of laudanum)—Cf. Dicodid (hydrocodone), Dihydrin (dihydrocodeine) and Dinarkon (oxycodone). Some authorities and publications use the name dilaudid as a synecdoche (e.g. like Kleenex for tissues, Xerox for copies &c.) for hydromorphone. Hydromorphone may also be known by the brand name Morphodid.

The CAS registry number of Dilaudid is 71-68-1. Its EINECS registry number is 200-762-6. The systematic name is (5α)-3-hydroxy-17-methyl-4,5-epoxymorphinan-6-one hydrochloride. In addition, the molecular formula is C₁₇H₁₉NO₃.ClH. What's more, it is an opioid analgesic and it has a shorter duration of action than morphine. Besides, it should be stored in sealed container, and put in a cool and dry place.

Physical properties about Dilaudid are: (1)ACD/LogP: 1.06; (2)# of Rule of 5 Violations: 0; (3)#H bond acceptors: 4; (4)#H bond donors: 1; (5)#Freely Rotating Bonds: 1; (6)Polar Surface Area: 38.77 Å²; (7)Flash Point: 241.4 °C; (8)Enthalpy of Vaporization: 76.74 kJ/mol; (9)Boiling Point: 475.6 °C at 760 mmHg; (10)Vapour Pressure: 1.14E-09 mmHg at 25°C.

When you are using this chemical, please be cautious about it as the following:
This chemical is harmful if swallowed. During using it, wear suitable protective clothing and gloves. In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.). And you should keep it away from sources of ignition and no smoking.

You can still convert the following datas into molecular structure:
(1)SMILES: Cl.O=C4[C@@H]5Oc1c2c(ccc1O)C[C@H]3N(CC[C@]25[C@H]3CC4)C
(2)InChI: InChI=1/C17H19NO3.ClH/c1-18-7-6-17-10-3-5-13(20)16(17)21-15-12(19)4-2-9(14(15)17)8-11(10)18;/h2,4,10-11,16,19H,3,5-8H2,1H3;1H/t10-,11+,16-,17-;/m0./s1
(3)InChIKey: XHILEZUETWRSHC-NRGUFEMZBH

The toxicity data is as follows: