ChemSpider 2D Image | S-Aminoethyl-L-cysteine | C5H12N2O2S


  • Molecular FormulaC5H12N2O2S
  • Average mass164.226 Da
  • Monoisotopic mass164.061951 Da
  • ChemSpider ID89945
  • defined stereocentres - 1 of 1 defined stereocentres

More details:

Validated by Experts, Validated by Users, Non-Validated, Removed by Users

L-Cysteine, S-(2-aminoethyl)- [ACD/Index Name]
S-(2-Aminoethyl)-L-cystein [German] [ACD/IUPAC Name]
S-(2-Aminoethyl)-L-cysteine [ACD/IUPAC Name]
S-(2-Aminoéthyl)-L-cystéine [French] [ACD/IUPAC Name]
S-Aminoethyl-L-cysteine [Wiki]
(2R)-2-amino-3-(2-aminoethylsulfanyl)propanoic acid
(2R)-2-amino-3-[(2-aminoethyl)sulfanyl]propanoic acid
(R)-2-amino-3-((2-aminoethyl)thio)propanoic acid

Validated by Experts, Validated by Users, Non-Validated, Removed by Users

NCGC00014530 [DBID]
NCIStruc1_000667 [DBID]
NCIStruc2_001830 [DBID]
NSC 241277 [DBID]
NSC-186915 [DBID]

Predicted data is generated using the ACD/Labs Percepta Platform - PhysChem Module

Density: 1.3±0.1 g/cm3
Boiling Point: 341.1±42.0 °C at 760 mmHg
Vapour Pressure: 0.0±1.6 mmHg at 25°C
Enthalpy of Vaporization: 64.3±6.0 kJ/mol
Flash Point: 160.1±27.9 °C
Index of Refraction: 1.570
Molar Refractivity: 41.8±0.3 cm3
#H bond acceptors: 4
#H bond donors: 5
#Freely Rotating Bonds: 5
#Rule of 5 Violations: 1
ACD/LogP: -0.30
ACD/LogD (pH 5.5): -4.40
ACD/BCF (pH 5.5): 1.00
ACD/KOC (pH 5.5): 1.00
ACD/LogD (pH 7.4): -4.06
ACD/BCF (pH 7.4): 1.00
ACD/KOC (pH 7.4): 1.00
Polar Surface Area: 115 Å2
Polarizability: 16.6±0.5 10-24cm3
Surface Tension: 63.0±3.0 dyne/cm
Molar Volume: 127.4±3.0 cm3

Predicted data is generated using the US Environmental Protection Agency’s EPISuite™

 Log Octanol-Water Partition Coef (SRC):
    Log Kow (KOWWIN v1.67 estimate) =  -3.88

 Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPWIN v1.42):
    Boiling Pt (deg C):  395.65  (Adapted Stein & Brown method)
    Melting Pt (deg C):  283.94  (Mean or Weighted MP)
    VP(mm Hg,25 deg C):  1.44E-008  (Modified Grain method)
    Subcooled liquid VP: 1.06E-005 mm Hg (25 deg C, Mod-Grain method)

 Water Solubility Estimate from Log Kow (WSKOW v1.41):
    Water Solubility at 25 deg C (mg/L):  1e+006
       log Kow used: -3.88 (estimated)
       no-melting pt equation used

 Water Sol Estimate from Fragments:
    Wat Sol (v1.01 est) =  1e+006 mg/L

 ECOSAR Class Program (ECOSAR v0.99h):
    Class(es) found:
       Aliphatic Amines-acid

 Henrys Law Constant (25 deg C) [HENRYWIN v3.10]:
   Bond Method :   2.17E-015  atm-m3/mole
   Group Method:   Incomplete
 Henrys LC [VP/WSol estimate using EPI values]:  3.112E-015 atm-m3/mole

 Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
  Log Kow used:  -3.88  (KowWin est)
  Log Kaw used:  -13.052  (HenryWin est)
      Log Koa (KOAWIN v1.10 estimate):  9.172
      Log Koa (experimental database):  None

 Probability of Rapid Biodegradation (BIOWIN v4.10):
   Biowin1 (Linear Model)         :   1.0497
   Biowin2 (Non-Linear Model)     :   0.9718
 Expert Survey Biodegradation Results:
   Biowin3 (Ultimate Survey Model):   3.2497  (weeks       )
   Biowin4 (Primary Survey Model) :   4.0829  (days        )
 MITI Biodegradation Probability:
   Biowin5 (MITI Linear Model)    :   0.5689
   Biowin6 (MITI Non-Linear Model):   0.3867
 Anaerobic Biodegradation Probability:
   Biowin7 (Anaerobic Linear Model):  1.2896
 Ready Biodegradability Prediction:   YES

Hydrocarbon Biodegradation (BioHCwin v1.01):
    Structure incompatible with current estimation method!

 Sorption to aerosols (25 Dec C)[AEROWIN v1.00]:
  Vapor pressure (liquid/subcooled):  0.00141 Pa (1.06E-005 mm Hg)
  Log Koa (Koawin est  ): 9.172
   Kp (particle/gas partition coef. (m3/ug)):
       Mackay model           :  0.00212 
       Octanol/air (Koa) model:  0.000365 
   Fraction sorbed to airborne particulates (phi):
       Junge-Pankow model     :  0.0712 
       Mackay model           :  0.145 
       Octanol/air (Koa) model:  0.0284 

 Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
   Hydroxyl Radicals Reaction:
      OVERALL OH Rate Constant =  89.4694 E-12 cm3/molecule-sec
      Half-Life =     0.120 Days (12-hr day; 1.5E6 OH/cm3)
      Half-Life =     1.435 Hrs
   Ozone Reaction:
      No Ozone Reaction Estimation
   Reaction With Nitrate Radicals May Be Important!
   Fraction sorbed to airborne particulates (phi): 0.108 (Junge,Mackay)
    Note: the sorbed fraction may be resistant to atmospheric oxidation

 Soil Adsorption Coefficient (PCKOCWIN v1.66):
      Koc    :  12.96
      Log Koc:  1.113 

 Aqueous Base/Acid-Catalyzed Hydrolysis (25 deg C) [HYDROWIN v1.67]:
    Rate constants can NOT be estimated for this structure!

 Bioaccumulation Estimates from Log Kow (BCFWIN v2.17):
   Log BCF from regression-based method = 0.500 (BCF = 3.162)
       log Kow used: -3.88 (estimated)

 Volatilization from Water:
    Henry LC:  2.17E-015 atm-m3/mole  (estimated by Bond SAR Method)
    Half-Life from Model River: 3.458E+011  hours   (1.441E+010 days)
    Half-Life from Model Lake : 3.772E+012  hours   (1.572E+011 days)

 Removal In Wastewater Treatment:
    Total removal:               1.85  percent
    Total biodegradation:        0.09  percent
    Total sludge adsorption:     1.75  percent
    Total to Air:                0.00  percent
      (using 10000 hr Bio P,A,S)

 Level III Fugacity Model:
           Mass Amount    Half-Life    Emissions
            (percent)        (hr)       (kg/hr)
   Air       5.99e-008       2.87         1000       
   Water     39              360          1000       
   Soil      60.9            720          1000       
   Sediment  0.0713          3.24e+003    0          
     Persistence Time: 579 hr


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