IUPAC Name: Didecyl(dimethyl)azanium bromide
Following is the structure of 1-Decanaminium,N-decyl-N,N-dimethyl-, bromide (1:1) (CAS NO.2390-68-3):
                          
Empirical Formula: C₂₂H₄₈BrN
Molecular Weight: 406.5272 g/mol
EINECS: 219-234-1 
Melting point 149-151 °C 
Stability: Stable. Incompatible with strong oxidizing agents.
Product Categories: Ammonium Bromides (Quaternary); Quaternary Ammonium Compounds 
Appearance: off-white powder and chunks
SMILES: [Br-].C(CCCCC[N+](C)(CCCCCCCCCC)C)CCCC
InChI: InChI=1/C22H48N.BrH/c1-5-7-9-11-13-15-17-19-21-23(3,4)22-20-18-16-14-12-10-8-6-2;/h5-22H2,1-4H3;1H/q+1;/p-1
InChIKey: UMGXUWVIJIQANV-REWHXWOFAO

Hazard Codes: Xi
Risk Statements: 36/37/38 
R36/37/38:Irritating to eyes, respiratory system and skin.
Safety Statements: 26-45-36/37/39-28 
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. 
S45:In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) 
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection. 
S28:After contact with skin, wash immediately with plenty of soap-suds.
WGK Germany of 1-Decanaminium,N-decyl-N,N-dimethyl-, bromide (1:1): 3

 1-Decanaminium,N-decyl-N,N-dimethyl-, bromide (1:1) , its cas register number is 2390-68-3. It also can be called Didecyldimethylammonium bromide ; DDAB ; Didecyl dimethyl ammonium bromide (6CI,7CI) ; Ammonium, didecyldimethyl-, bromide(8CI) .