Cysteine | SSHADE

Molecule

Name: Cysteine

Name and identifiers

IUPAC name: 2-amino-3-sulfanylpropanoic acid
Secondary names: DL-Cysteine, 2-Amino-3-sulfhydrylpropanoic acid, Cys
InChI: InChI=1S/C3H7NO2S/c4-2(1-7)3(5)6/h2,7H,1,4H2,(H,5,6)
InChI key: XUJNEKJLAYXESH-UHFFFAOYSA-N
CAS number: 3374-22-9

Structure and atomic composition

Formula: $HSCH_2CH(NH_2)COOH$
Chemical formula: C3H7NO2S
Structural formula: [SH][CH2][CH][NH2](C(=O)[OH])
Charge: 0

	Atom	Name	Number
	$C$	Carbon	3
	$H$	Hydrogen	7
	$O$	Oxygen	2
	$N$	Nitrogen	1
	$S$	Sulfur	1

Stereodescriptor

R

Relations

enantiomer

Isotopic composition

Isotope mixture type: terrestrial abundance

Nuclear spin isomers

Spin type: equilibrated

Molar mass: 121.158 $g/mol$
State STP: solid
State NTP: solid
Protic: protic
Polarity: polar

Fundamental vibration modes

Molecule symmetry: unknown
Case: nonlinear-polyatomic

Chemical functions and bonds

Chemical functions

	Function	Number
	$R-S-H$	1
	$R-NH_2$	1
	$R-C(=O)-OH$	1

Chemical bonds

	Bond	Number
	$\geq C-H$	3
	$-O-H$	1
	$>N-H$	2
	$-S-H$	1
	$\geq C-S-$	1
	$\geq C-C \leq$	1
	$\eqslantgtr C-C\leq$	1
	$\geq C-N<$	1
	$>C=O$	1
	$\eqslantgtr C-O-$	1