This chemical is called 8,10-Heneicosadiynoic acid, and its systematic name is henicosa-8,10-diynoic acid. With the molecular formula of C₂₁H₃₄O₂, its molecular weight is 318.49. The CAS registry number of this chemical is 174063-95-7.

Other characteristics of the 8,10-Heneicosadiynoic acid can be summarised as followings: (1)ACD/LogP: 8.11; (2)# of Rule of 5 Violations: 1; (3)ACD/LogD (pH 5.5): 7.29; (4)ACD/LogD (pH 7.4): 5.5; (5)ACD/BCF (pH 5.5): 131515.97; (6)ACD/BCF (pH 7.4): 2102.04; (7)ACD/KOC (pH 5.5): 94391.45; (8)ACD/KOC (pH 7.4): 1508.68; (9)#H bond acceptors: 2; (10)#H bond donors: 1; (11)#Freely Rotating Bonds: 15; (12)Polar Surface Area: 26.3 Å²; (13)Index of Refraction: 1.487; (14)Molar Refractivity: 96.91 cm³; (15)Molar Volume: 336.4 cm³; (16)Polarizability: 38.41×10^-24cm³; (17)Surface Tension: 39.9 dyne/cm; (18)Density: 0.946 g/cm³; (19)Flash Point: 224.7 °C; (20)Enthalpy of Vaporization: 80.84 kJ/mol; (21)Boiling Point: 474.6 °C at 760 mmHg; (22)Vapour Pressure: 2.58E-10 mmHg at 25°C.

Uses of this chemical: The 8,10-Heneicosadiynoic acid could react with 2,2'-ethane-1,2-diyldioxy-bis-ethylamine, and obtain the heneicosa-8,10-diynoic acid {2-[2-(2-amino-ethoxy)-ethoxy]-ethyl}-amide. This reaction needs the reagent of BOP, Et₃N, and the solvent of CHCl₃, acetonitrile. The yield is 76 %. In addition, this reaction should be taken for 18 hours at the temperature of -15- 20 °C.

When you are using this chemical, please be cautious about it as the following: This chemical is irritating to eyes, respiratory system and skin. You should wear suitable protective clothing if you use it. In case of contacting with eyes, rinse immediately with plenty of water and seek medical advice.

You can still convert the following datas into molecular structure: 
1.SMILES: O=C(O)CCCCCCC#CC#CCCCCCCCCCC
2.InChI: InChI=1/C21H34O2/c1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-18-19-20-21(22)23/h2-10,15-20H2,1H3,(H,22,23)
3.InChIKey: IQQJOZKPAQNXRX-UHFFFAOYAC