The CAS registry number of Betulin is 473-98-3. The IUPAC name is (3β)-lup-20(29)-ene-3,28-diol. Its EINECS registry number is 7-475-5. In addition, the molecular formula is C₃₀H₅₀O₂ and the molecular weight is 442.7168. It belongs to the classes of Pentacyclic Triterpenes and Tri-Terpenoids. And it is an abundant naturally occurring triterpene. What's more, it can be converted to betulinic acid (the alcohol group replaced by a carboxylic acid group), which is biologically more active than betulin itself. It should be stored in a cool, ventilated and dry place.

Physical properties about this chemical are: (1)ACD/LogP: 8.61; (2)# of Rule of 5 Violations: 1; (3)ACD/LogD (pH 5.5): 8.607; (4)ACD/LogD (pH 7.4): 8.607; (5)ACD/BCF (pH 5.5): 1000000; (6)ACD/BCF (pH 7.4): 1000000; (7)ACD/KOC (pH 5.5): 1145754.5; (8)ACD/KOC (pH 7.4): 1145754.5; (9)#H bond acceptors: 2; (10)#H bond donors: 2; (11)#Freely Rotating Bonds: 4; (12)Polar Surface Area: 40.46 Å²; (13)Index of Refraction: 1.525; (14)Molar Refractivity: 133.301 cm³; (15)Molar Volume: 435.12 cm³; (16)Polarizability: 52.845 ×10^-24cm³; (17)Surface Tension: 36.992 dyne/cm; (18)Density: 1.017 g/cm³; (19)Flash Point: 210.873 °C; (20)Enthalpy of Vaporization: 91.556 kJ/mol; (21)Boiling Point: 522.275 °C at 760 mmHg; (22)Vapour Pressure: 0 mmHg at 25°C.

When you are using this chemical, please be cautious about it as the following:
It is irritating to eyes, respiratory system and skin and harmful by inhalation, in contact with skin and if swallowed. During using it, you should wear suitable protective clothing and gloves. In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.

You can still convert the following datas into molecular structure:
(1)SMILES: CC(=C)[C@@H]1CC[C@]2([C@H]1[C@H]3CC[C@@H]4[C@]5(CC[C@@H](C([C@@H]5CC[C@]4([C@@]3(CC2)C)C)(C)C)O)C)CO
(2)InChI: InChI=1/C30H50O2/c1-19(2)20-10-15-30(18-31)17-16-28(6)21(25(20)30)8-9-23-27(5)13-12-24(32)26(3,4)22(27)11-14-29(23,28)7/h20-25,31-32H,1,8-18H2,2-7H3/t20-,21+,22-,23+,24-,25+,27-,28+,29+,30+/m0/s1
(3)InChIKey: FVWJYYTZTCVBKE-ROUWMTJPBQ