Molecule
Name
All-trans-Retinal
IUPAC name
(2E,4E,6E,8E)-3,7-Dimethyl-9-(2,6,6-trimethylcyclohexen-1-yl)nona-2,4,6,8-tetraenal
Secondary names
Vitamin A aldehyde, retinene, retinaldehyde, RAL
InChI
InChI=1S/C20H28O/c1-16(8-6-9-17(2)13-15-21)11-12-19-18(3)10-7-14-20(19,4)5/h6,8-9,11-13,15H,7,10,14H2,1-5H3/b9-6+,12-11+,16-8+,17-13+
InChI key
NCYCYZXNIZJOKI-OVSJKPMPSA-N
CAS number
116-31-4
Structure and atomic composition
Formula
$(C_6H_6)_c(CH_3)_3CH=CHC(CH_3)=CHCH=CHC(CH_3)=CH(=O)$
Chemical formula
(C6H6)(CH3)3C8H6(CH3)2COH
Structural formula
CC1=C(C(CCC1)(C)C)/C=C/C(=C/C=C/C(=C/C=O)/C)/C
Charge
0
Unpaired electrons
0
  Atom Name Number
$C$ Carbon 20
$H$ Hydrogen 28
$O$ Oxygen 1
Relations
  • no
Isotope mixture type
terrestrial abundance
Spin type
equilibrated
Molar mass
284.44 $g/mol$
State STP
solid
Protic
aprotic
Polarity
nonpolar
Molecule symmetry
no
Case
complex
Chemical functions
  Function Number
$R-CH_3$ 5
$R-CH=O$ 1
Chemical bonds
  Bond Number
$\geq C-C \leq$ 5
$\eqslantgtr C-C\leq$ 5
$\eqslantgtr C-C\eqslantless$ 5
$>C=C<$ 5
$\geq C-H$ 21
$\eqslantgtr C-H$ 7
$>C=O$ 1