ChemSpider 2D Image | Hydroxyethylcysteine | C5H11NO3S

Hydroxyethylcysteine

  • Molecular FormulaC5H11NO3S
  • Average mass165.211 Da
  • Monoisotopic mass165.045959 Da
  • ChemSpider ID106509
  • defined stereocentres - 1 of 1 defined stereocentres


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

(S)-2-Amino-3-(Ethanolthio)Propanoic Acid
6367-98-2 [RN]
Hydroxyethylcysteine
L-Cysteine, S-(2-hydroxyethyl)- [ACD/Index Name]
S-(2-Hydroxyethyl)-L-cystein [German] [ACD/IUPAC Name]
S-(2-Hydroxyethyl)-L-cysteine [ACD/IUPAC Name]
S-(2-Hydroxyéthyl)-L-cystéine [French] [ACD/IUPAC Name]
S-2-Hydroxyethyl-L-cysteine
(2R)-2-amino-3-[(2-hydroxyethyl)sulfanyl]propanoic acid
(2R)-2-ammonio-3-(2-hydroxyethylthio)propanoate
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Validated by Experts, Validated by Users, Non-Validated, Removed by Users

CCRIS 4693 [DBID]
LI7 [DBID]

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

    Density: 1.4±0.1 g/cm3
    Boiling Point: 379.9±42.0 °C at 760 mmHg
    Vapour Pressure: 0.0±1.9 mmHg at 25°C
    Enthalpy of Vaporization: 72.6±6.0 kJ/mol
    Flash Point: 183.6±27.9 °C
    Index of Refraction: 1.571
    Molar Refractivity: 39.8±0.3 cm3
    #H bond acceptors: 4
    #H bond donors: 4
    #Freely Rotating Bonds: 5
    #Rule of 5 Violations: 0
    ACD/LogP: -0.42
    ACD/LogD (pH 5.5): -2.87
    ACD/BCF (pH 5.5): 1.00
    ACD/KOC (pH 5.5): 1.00
    ACD/LogD (pH 7.4): -2.90
    ACD/BCF (pH 7.4): 1.00
    ACD/KOC (pH 7.4): 1.00
    Polar Surface Area: 109 Å2
    Polarizability: 15.8±0.5 10-24cm3
    Surface Tension: 66.9±3.0 dyne/cm
    Molar Volume: 121.2±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) =  -2.88
    
     Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPWIN v1.42):
        Boiling Pt (deg C):  408.34  (Adapted Stein & Brown method)
        Melting Pt (deg C):  268.96  (Mean or Weighted MP)
        VP(mm Hg,25 deg C):  2.2E-010  (Modified Grain method)
        Subcooled liquid VP: 1.05E-007 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):  1.584e+005
           log Kow used: -2.88 (estimated)
           no-melting pt equation used
    
     Water Sol Estimate from Fragments:
        Wat Sol (v1.01 est) =  64544 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 :   7.73E-016  atm-m3/mole
       Group Method:   Incomplete
     Henrys LC [VP/WSol estimate using EPI values]:  3.019E-016 atm-m3/mole
    
     Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
      Log Kow used:  -2.88  (KowWin est)
      Log Kaw used:  -13.500  (HenryWin est)
          Log Koa (KOAWIN v1.10 estimate):  10.620
          Log Koa (experimental database):  None
    
     Probability of Rapid Biodegradation (BIOWIN v4.10):
       Biowin1 (Linear Model)         :   1.0541
       Biowin2 (Non-Linear Model)     :   0.9716
     Expert Survey Biodegradation Results:
       Biowin3 (Ultimate Survey Model):   3.3831  (days-weeks  )
       Biowin4 (Primary Survey Model) :   4.1677  (days        )
     MITI Biodegradation Probability:
       Biowin5 (MITI Linear Model)    :   0.6938
       Biowin6 (MITI Non-Linear Model):   0.6898
     Anaerobic Biodegradation Probability:
       Biowin7 (Anaerobic Linear Model):  1.2450
     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):  1.4E-005 Pa (1.05E-007 mm Hg)
      Log Koa (Koawin est  ): 10.620
       Kp (particle/gas partition coef. (m3/ug)):
           Mackay model           :  0.214 
           Octanol/air (Koa) model:  0.0102 
       Fraction sorbed to airborne particulates (phi):
           Junge-Pankow model     :  0.886 
           Mackay model           :  0.945 
           Octanol/air (Koa) model:  0.45 
    
     Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
       Hydroxyl Radicals Reaction:
          OVERALL OH Rate Constant =  61.9462 E-12 cm3/molecule-sec
          Half-Life =     0.173 Days (12-hr day; 1.5E6 OH/cm3)
          Half-Life =     2.072 Hrs
       Ozone Reaction:
          No Ozone Reaction Estimation
       Reaction With Nitrate Radicals May Be Important!
       Fraction sorbed to airborne particulates (phi): 0.915 (Junge,Mackay)
        Note: the sorbed fraction may be resistant to atmospheric oxidation
    
     Soil Adsorption Coefficient (PCKOCWIN v1.66):
          Koc    :  10
          Log Koc:  1.000 
    
     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: -2.88 (estimated)
    
     Volatilization from Water:
        Henry LC:  7.73E-016 atm-m3/mole  (estimated by Bond SAR Method)
        Half-Life from Model River: 9.735E+011  hours   (4.056E+010 days)
        Half-Life from Model Lake : 1.062E+013  hours   (4.425E+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       4.58e-007       4.14         1000       
       Water     34.5            208          1000       
       Soil      65.5            416          1000       
       Sediment  0.0596          1.87e+003    0          
         Persistence Time: 387 hr
    
    
    
    
                        

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