Results for:
PubChem ID: 8103

Hexan-1-ol

Mass-Spectra

Compound Details

Synonymous names
Pentylcarbinol
Amylcarbinol
Caproalcohol
Hydroxyhexane
Hexalcohol
Hexanols
ZSIAUFGUXNUGDI-UHFFFAOYSA-N
Caproic alcohol
Caproyl alcohol
HEXANOL
Hexyl alcohol
HEXANOL-CMPD
Nat.Hexanol
NATURAL HEXYL ALCOHOL
1-Hydroxyhexane
1-hydroxyhexyl
BDBM9
n-Hexanol
N-hexenol
AC1Q2WFM
AC1Q2WFN
HE2
hexanol;
C6 alcohol
n-Hexyl alcohol
1-Hexanol
6CP2QER8GS
HEXYL ALCOHOL, ACTIVE
1-Hexyl alcohol
AC1L1Q9T
EPAL 6
Exxal 6
C6H14O
SCHEMBL1877
UNII-6CP2QER8GS
1-Hexanol, analytical standard
Alcohol C-6
Alcohol(C6)
Butanol, ethyl-
KSC178E1L
ACMC-1C26M
CHEMBL14085
Hexan-1-ol
Hexanol (VAN)
Hexyl alcohol (natural)
NSC9254
UN2282
CTK0H8215
Fatty alcohol(C6)
HMDB12971
HSDB 565
n-C6H13OH
WLN: Q6
BIDD:ER0298
NE10250
RL00460
HMS3039L08
n-Hexan-1-ol
DTXSID8021931
FEMA Number 2567
Hexanol-(1)
Jsp000849
LP003954
LP076753
LS-2366
NSC 9254
NSC-9254
OR249512
SBB059899
STL282713
CHEBI:87393
DSSTox_CID_1931
ZINC1699882
AN-43058
ANW-16262
Caswell No. 482E
CJ-06648
CJ-28634
DSSTox_GSID_21931
EBD2203383
SC-22734
TRA0032352
1-Hexanol, 98%
ACN-S002388
DSSTox_RID_76410
LMFA05000117
MFCD00002982
ZINC01699882
AI3-08157
RTR-002242
ST51046167
TR-002242
AKOS009031422
Alcohol C-6, Natural, Natural Hexanol
EPA Pesticide Chemical Code 079047
Exxal 6 (Salt/Mix)
J-002549
S14-1473
1-Hexanol, anhydrous, >=99%
BRN 0969167
FEMA No. 2567
FT-0607887
MLS001055374
SMR000677945
Z955123546
EN300-19338
Tox21_201335
Tox21_302953
1-Hexanol, reagent grade, 98%
111-27-3
3B1-002865
F0001-0237
Hexyl alcohol, >=98%, FCC, FG
MCULE-4299150163
NCGC00090949-01
NCGC00090949-02
NCGC00256385-01
NCGC00258887-01
CAS-111-27-3
EINECS 203-852-3
EINECS 247-346-0
25917-35-5
UN 2282 (Salt/Mix)
220713-27-9
1-Hexanol, 99% 500ml
Hexyl alcohol, natural, >=98%, FCC, FG
MolPort-001-779-716
1-Hexanol, SAJ special grade, >=99.0%
Hexanols [UN2282] [Flammable liquid]
1-Hexanol, Vetec(TM) reagent grade, 98%
81323-EP2269986A1
81323-EP2272817A1
81323-EP2301919A1
81323-EP2305687A1
81323-EP2371805A1
81323-EP2380568A1
89674-EP2272842A1
89674-EP2292613A1
89674-EP2305033A1
23275-26-5 (aluminum salt)
1-Hexanol, purum, >=98.0% (GC)
4-01-00-01694 (Beilstein Handbook Reference)
1-Hexanol, ReagentPlus(R), >=99.5% (GC)
InChI=1/C6H14O/c1-2-3-4-5-6-7/h7H,2-6H2,1H
Microorganism:

Yes

IUPAC namehexan-1-ol
SMILESCCCCCCO
InchiInChI=1S/C6H14O/c1-2-3-4-5-6-7/h7H,2-6H2,1H3
FormulaCH3(CH2)4CH2OH
PubChem ID8103
Molweight102.177
LogP1.69
Atoms21
Bonds20
H-bond Acceptor1
H-bond Donor1
Chemical ClassificationAlcohols

mVOC Specific Details

Volatilization
The Henry's Law constant for 1-hexanol is 1.71X10-5 atm-cu m/mole(1). This Henry's Law constant indicates that 1-hexanol is expected to volatilize from water surfaces(2). Based on this Henry's Law constant, the volatilization half-life from a model river (1 m deep, flowing 1 m/sec, wind velocity of 3 m/sec)(2) is estimated as 2 days(SRC). The volatilization half-life from a model lake (1 m deep, flowing 0.05 m/sec, wind velocity of 0.5 m/sec)(2) is estimated as 20 days(SRC). 1-Hexanol's Henry's Law constant indicates that volatilization from moist soil surfaces may occur(SRC). 1-Hexanol is expected to volatilize slowly from dry soil surfaces(SRC) based upon a vapor pressure of 0.928 mm Hg(3).
Literature: (1) Buttery RG et al; J Agric Food Chem 17: 385-9 (1969) (2) Lyman WJ et al; Handbook of Chemical Property Estimation Methods. Washington, DC: Amer Chem Soc pp. 15-1 to 15-29 (1990) (3) Daubert TE, Danner RP; Physical and Thermodynamic Properties of Pure Chemicals: Data Compilation. NY: Hemisphere Pub Corp (1989)
Soil Adsorption
A Koc of 10.2 was determined for 1-hexanol on a Hagerstown silt loam soil(1). According to a suggested classification scheme(2), this Koc value suggests that 1-hexanol is expected to have very high mobility in soil.
Literature: (1) Gerstl Z, Helling CS; J Environ Sci Health 22: 55-69 (1987) (2) Swann RL et al; Res Rev 85: 17-28 (1983)
Vapor Pressure
PressureReference
0.928 mm Hg at 25 deg CDaubert, T.E., R.P. Danner. Physical and Thermodynamic Properties of Pure Chemicals Data Compilation. Washington, D.C.: Taylor and Francis, 1989.
MS-Links
1D-NMR-Links

Microorganisms emitting the compound
KingdomSpeciesBiological FunctionOrigin/HabitatReference
BacteriaBacillus Cereus B-569n/aBlom et al., 2011
BacteriaBurkholderia Anthina LMG 20980n/aBlom et al., 2011
BacteriaBurkholderia Caledonica LMG 19076n/aBlom et al., 2011
BacteriaBurkholderia Caribensis LMG 18531n/aBlom et al., 2011
BacteriaBurkholderia Caryophylli LMG 2155n/aBlom et al., 2011
BacteriaBurkholderia Cepacia LMG 1222n/aBlom et al., 2011
BacteriaBurkholderia Cepacia LMG 1222 358RhizosphereBlom et al., 2011
BacteriaBurkholderia Fungorum LMG 16225n/aBlom et al., 2011
BacteriaBurkholderia Glathei LMG 14190n/aBlom et al., 2011
BacteriaBurkholderia Glumae LMG 2196n/aBlom et al., 2011
BacteriaBurkholderia Graminis LMG 18924n/aBlom et al., 2011
BacteriaBurkholderia Hospita LMG 20598n/aBlom et al., 2011
BacteriaBurkholderia Kururiensis LMG 19447n/aBlom et al., 2011
BacteriaBurkholderia Lata LMG 22485n/aBlom et al., 2011
BacteriaBurkholderia Phenazinium LMG 2247n/aBlom et al., 2011
BacteriaBurkholderia Phenoliruptrix LMG 22037n/aBlom et al., 2011
BacteriaBurkholderia Phytofirmans LMG 22487n/aBlom et al., 2011
BacteriaBurkholderia Pyrrocinia LMG 21822n/aBlom et al., 2011
BacteriaBurkholderia Sacchari LMG 19450n/aBlom et al., 2011
BacteriaBurkholderia Terricola LMG 20594n/aBlom et al., 2011
BacteriaBurkholderia Thailandensis LMG 20219n/aBlom et al., 2011
BacteriaBurkholderia Tropica LMG 22274n/aBlom et al., 2011
BacteriaBurkholderia Xenovorans LMG 21463n/aBlom et al., 2011
BacteriaCellulomonas Udan/aBlom et al., 2011
BacteriaChromobacterium Violaceum CV0n/aBlom et al., 2011
BacteriaEscherichia Coli OP50n/aBlom et al., 2011
BacteriaLeuconostoc Mesenteroides Subsp. Cremoris CIRM1303nagoat cheesePogačić et al., 2016
BacteriaPseudomonas Chlororaphisn/aBlom et al., 2011
BacteriaPseudomonas Simiae AUnarhizosphere of a soybean field in the province of Rajasthan, IndiaVaishnav et al., 2016
BacteriaSerratia Entomophilia A1MO2n/aBlom et al., 2011
BacteriaSerratia Marcescens MG1n/aBlom et al., 2011
BacteriaSerratia Proteamaculans B5an/aBlom et al., 2011
Fungi Ascocoryne SpGriffin et al. 2013
FungiAspergillus Flavussemichemical of the navel orangeworm mothARS culture collection (NRRL)Beck et al. 2012
FungiAspergillus Nigersemichemical of the navel orangeworm mothARS culture collection (NRRL)Beck et al. 2012
FungiAspergillus Parasiticussemichemical of the navel orangeworm mothARS culture collection (NRRL)Beck et al. 2012
FungiChaetomium GlobosumSchleibinger et al.,2005
Fungi Fusarium CulmorumSavel’eva et al 2017
FungiMuscodor Albus CZ-620n/aCorcuff et al., 2011
FungiPenicillium Glabrumsemichemical of the navel orangeworm mothARS culture collection (NRRL)Beck et al. 2012
FungiTrichodema Pseudokoningiin/aWheatley et al., 1997
FungiTuber Aestivumn/aAgricultural Centre of Castilla and León Community (Monasterio de la Santa Espina, Valladolid, Spain) and Navaleno (Soria, Spain).Diaz et al., 2003
FungiTuber Borchiin/aSplivallo et al., 2007
FungiTuber Indicumn/aSplivallo et al., 2007
FungiTuber Melanosporumn/aSplivallo et al., 2007
BacteriaSalinispora Tropica CNB-440namarine sedimentGroenhagen et al., 2016
BacteriaStreptomyces Sp. GWS-BW-H5.n/aDickschat et al., 2005_2
FungiArmillaria Mellean/aMueller et al., 2013
FungiAspergillus Flavus NRRL 18543n/aBeck et al., 2012
FungiAspergillus Flavus NRRL 25347n/aBeck et al., 2012
FungiAspergillus Niger NRRL 326n/aBeck et al., 2012
FungiAspergillus Parasiticus NRRL 5862n/aBeck et al., 2012
FungiFusarium Graminearum 15AcDONn/aBusko et al., 2014
FungiFusarium Graminearum 15AcDON 1001tan/aBusko et al., 2014
FungiFusarium Graminearum 15AcDON ZFR 29n/aBusko et al., 2014
FungiFusarium Graminearum 15AcDON_4n/aBusko et al., 2014
FungiFusarium Graminearum 15AcDON_5n/aBusko et al., 2014
FungiFusarium Graminearum 15AcDON_6n/aBusko et al., 2014
FungiFusarium Graminearum 15AcDON_7n/aBusko et al., 2014
FungiFusarium Graminearum 15AcDON_8n/aBusko et al., 2014
FungiFusarium Graminearum 15AcDON_9n/aBusko et al., 2014
FungiFusarium Graminearum 3AcDON 1002tn/aBusko et al., 2014
FungiFusarium Graminearum 3AcDON 11791n/aBusko et al., 2014
FungiFusarium Graminearum 3AcDON 1509n/aBusko et al., 2014
FungiFusarium Graminearum 3AcDON 8046n/aBusko et al., 2014
FungiFusarium Graminearum 3AcDON NRRL38369n/aBusko et al., 2014
FungiFusarium Graminearum 3AcDON NRRL6394n/aBusko et al., 2014
FungiFusarium Graminearum 3AcDON ZFR 15n/aBusko et al., 2014
FungiFusarium Graminearum 3AcDON ZFR 37n/aBusko et al., 2014
FungiFusarium Graminearum 3AcDON ZFR 51n/aBusko et al., 2014
FungiFusarium Graminearum NIVn/aBusko et al., 2014
FungiFusarium Graminearum NIV 357n/aBusko et al., 2014
FungiFusarium Graminearum NIV ZFR 119n/aBusko et al., 2014
FungiFusarium Graminearum NIV ZFR 23n/aBusko et al., 2014
FungiFusarium Graminearum NIV ZFR 48n/aBusko et al., 2014
FungiFusarium Graminearum NIV_5n/aBusko et al., 2014
FungiFusarium Graminearum NIV_6n/aBusko et al., 2014
FungiFusarium Graminearum NIV_7n/aBusko et al., 2014
FungiFusarium Graminearum NIV_8n/aBusko et al., 2014
FungiPenicillium Glabrum NRRL 766n/aBeck et al., 2012
FungiPholiota Squarrosan/aMueller et al., 2013
FungiPleurotus CystidiosusnanaUsami et al., 2014
FungiPleurotus Eryngii Var. TuoliensisnanaUsami et al., 2014
FungiRhizopus Stolonifer NRRL 54667n/aBeck et al., 2012
FungiStropharia Rugosoannulatan/aMueller et al., 2013
FungiTrichoderma Viriden/aMueller et al., 2013
FungiVerticillium Longisporumn/aMueller et al., 2013
Method
KingdomSpeciesGrowth MediumApplied MethodVerification
BacteriaBacillus Cereus B-569MS Headspace air was trapped in glass Gerstel TDS tubes and analysed by gas chromatography with mass selective detection (GC-MSD)
BacteriaBurkholderia Anthina LMG 20980MR-VP, MS and AngleHeadspace air was trapped in glass Gerstel TDS tubes and analysed by gas chromatography with mass selective detection (GC-MSD)
BacteriaBurkholderia Caledonica LMG 19076MR-VP and AngleHeadspace air was trapped in glass Gerstel TDS tubes and analysed by gas chromatography with mass selective detection (GC-MSD)
BacteriaBurkholderia Caribensis LMG 18531MR-VP and AngleHeadspace air was trapped in glass Gerstel TDS tubes and analysed by gas chromatography with mass selective detection (GC-MSD)
BacteriaBurkholderia Caryophylli LMG 2155MR-VP, MS and AngleHeadspace air was trapped in glass Gerstel TDS tubes and analysed by gas chromatography with mass selective detection (GC-MSD)
BacteriaBurkholderia Cepacia LMG 1222MR-VP, MS and AngleHeadspace air was trapped in glass Gerstel TDS tubes and analysed by gas chromatography with mass selective detection (GC-MSD)
BacteriaBurkholderia Cepacia LMG 1222 358MR-VP, MS and AngleHeadspace air was trapped in glass Gerstel TDS tubes and analysed by gas chromatography with mass selective detection (GC-MSD)Yes
BacteriaBurkholderia Fungorum LMG 16225AngleHeadspace air was trapped in glass Gerstel TDS tubes and analysed by gas chromatography with mass selective detection (GC-MSD)
BacteriaBurkholderia Glathei LMG 14190MR-VPHeadspace air was trapped in glass Gerstel TDS tubes and analysed by gas chromatography with mass selective detection (GC-MSD)
BacteriaBurkholderia Glumae LMG 2196MR-VPHeadspace air was trapped in glass Gerstel TDS tubes and analysed by gas chromatography with mass selective detection (GC-MSD)
BacteriaBurkholderia Graminis LMG 18924MR-VPHeadspace air was trapped in glass Gerstel TDS tubes and analysed by gas chromatography with mass selective detection (GC-MSD)
BacteriaBurkholderia Hospita LMG 20598AngleHeadspace air was trapped in glass Gerstel TDS tubes and analysed by gas chromatography with mass selective detection (GC-MSD)
BacteriaBurkholderia Kururiensis LMG 19447MS and AngleHeadspace air was trapped in glass Gerstel TDS tubes and analysed by gas chromatography with mass selective detection (GC-MSD)
BacteriaBurkholderia Lata LMG 22485MS and AngleHeadspace air was trapped in glass Gerstel TDS tubes and analysed by gas chromatography with mass selective detection (GC-MSD)
BacteriaBurkholderia Phenazinium LMG 2247MS and AngleHeadspace air was trapped in glass Gerstel TDS tubes and analysed by gas chromatography with mass selective detection (GC-MSD)
BacteriaBurkholderia Phenoliruptrix LMG 22037MR-VP, MS and AngleHeadspace air was trapped in glass Gerstel TDS tubes and analysed by gas chromatography with mass selective detection (GC-MSD)
BacteriaBurkholderia Phytofirmans LMG 22487MR-VPHeadspace air was trapped in glass Gerstel TDS tubes and analysed by gas chromatography with mass selective detection (GC-MSD)
BacteriaBurkholderia Pyrrocinia LMG 21822AngleHeadspace air was trapped in glass Gerstel TDS tubes and analysed by gas chromatography with mass selective detection (GC-MSD)
BacteriaBurkholderia Sacchari LMG 19450MR-VP, MS and AngleHeadspace air was trapped in glass Gerstel TDS tubes and analysed by gas chromatography with mass selective detection (GC-MSD)
BacteriaBurkholderia Terricola LMG 20594MR-VP, MS and AngleHeadspace air was trapped in glass Gerstel TDS tubes and analysed by gas chromatography with mass selective detection (GC-MSD)
BacteriaBurkholderia Thailandensis LMG 20219AngleHeadspace air was trapped in glass Gerstel TDS tubes and analysed by gas chromatography with mass selective detection (GC-MSD)
BacteriaBurkholderia Tropica LMG 22274MS Headspace air was trapped in glass Gerstel TDS tubes and analysed by gas chromatography with mass selective detection (GC-MSD)
BacteriaBurkholderia Xenovorans LMG 21463AngleHeadspace air was trapped in glass Gerstel TDS tubes and analysed by gas chromatography with mass selective detection (GC-MSD)
BacteriaCellulomonas UdaMR-VP and MSHeadspace air was trapped in glass Gerstel TDS tubes and analysed by gas chromatography with mass selective detection (GC-MSD)
BacteriaChromobacterium Violaceum CV0MR-VPHeadspace air was trapped in glass Gerstel TDS tubes and analysed by gas chromatography with mass selective detection (GC-MSD)
BacteriaEscherichia Coli OP50MR-VPHeadspace air was trapped in glass Gerstel TDS tubes and analysed by gas chromatography with mass selective detection (GC-MSD)
BacteriaLeuconostoc Mesenteroides Subsp. Cremoris CIRM1303curd-based broth mediumGC/MSYes
BacteriaPseudomonas ChlororaphisMR-VPHeadspace air was trapped in glass Gerstel TDS tubes and analysed by gas chromatography with mass selective detection (GC-MSD)
BacteriaPseudomonas Simiae AUNutrient broth; King's B agar; MS mediumGC/MSNo
BacteriaSerratia Entomophilia A1MO2MSHeadspace air was trapped in glass Gerstel TDS tubes and analysed by gas chromatography with mass selective detection (GC-MSD)
BacteriaSerratia Marcescens MG1MR-VP and AngleHeadspace air was trapped in glass Gerstel TDS tubes and analysed by gas chromatography with mass selective detection (GC-MSD)
BacteriaSerratia Proteamaculans B5aMR-VPHeadspace air was trapped in glass Gerstel TDS tubes and analysed by gas chromatography with mass selective detection (GC-MSD)
Fungi Ascocoryne Spno
FungiAspergillus FlavusPDAGC/MSyes
FungiAspergillus NigerPDAGC/MSyes
FungiAspergillus ParasiticusPDAGC/MSyes
FungiChaetomium Globosumingrain wallpaperGC/MS-SIMYes
Fungi Fusarium Culmorumno
FungiMuscodor Albus CZ-620n/aHeadspace sampler/GC-MS
FungiPenicillium GlabrumPDAGC/MSyes
FungiTrichodema PseudokoningiiLow mediumGC/MS
FungiTuber Aestivumn/aHeadspace solid-phase microextraction (HS-SPME) combined with GC-MS
FungiTuber Borchiin/an/a
FungiTuber Indicumn/an/a
FungiTuber Melanosporumn/an/a
BacteriaSalinispora Tropica CNB-440seawater-based A1GC/MS
BacteriaStreptomyces Sp. GWS-BW-H5.n/an/a
FungiArmillaria MelleaMelin-Nor krans synthetic medium (modified)Headspace trapping ( using stir bar sorptive extraction )/ GC-MS
FungiAspergillus Flavus NRRL 18543potato dextrose agar and Polyunsaturated Fatty AcidsSPME/ GC-MS
FungiAspergillus Flavus NRRL 25347potato dextrose agar and Polyunsaturated Fatty AcidsSPME/ GC-MS
FungiAspergillus Niger NRRL 326potato dextrose agar and Polyunsaturated Fatty AcidsSPME/ GC-MS
FungiAspergillus Parasiticus NRRL 5862potato dextrose agar and Polyunsaturated Fatty AcidsSPME/ GC-MS
FungiFusarium Graminearum 15AcDONyeast extract sucrose agarSPME/GC-MS
FungiFusarium Graminearum 15AcDON 1001tayeast extract sucrose agarSPME/GC-MS
FungiFusarium Graminearum 15AcDON ZFR 29yeast extract sucrose agarSPME/GC-MS
FungiFusarium Graminearum 15AcDON_4yeast extract sucrose agarSPME/GC-MS
FungiFusarium Graminearum 15AcDON_5yeast extract sucrose agarSPME/GC-MS
FungiFusarium Graminearum 15AcDON_6yeast extract sucrose agarSPME/GC-MS
FungiFusarium Graminearum 15AcDON_7yeast extract sucrose agarSPME/GC-MS
FungiFusarium Graminearum 15AcDON_8yeast extract sucrose agarSPME/GC-MS
FungiFusarium Graminearum 15AcDON_9yeast extract sucrose agarSPME/GC-MS
FungiFusarium Graminearum 3AcDON 1002tyeast extract sucrose agarSPME/GC-MS
FungiFusarium Graminearum 3AcDON 11791yeast extract sucrose agarSPME/GC-MS
FungiFusarium Graminearum 3AcDON 1509yeast extract sucrose agarSPME/GC-MS
FungiFusarium Graminearum 3AcDON 8046yeast extract sucrose agarSPME/GC-MS
FungiFusarium Graminearum 3AcDON NRRL38369yeast extract sucrose agarSPME/GC-MS
FungiFusarium Graminearum 3AcDON NRRL6394yeast extract sucrose agarSPME/GC-MS
FungiFusarium Graminearum 3AcDON ZFR 15yeast extract sucrose agarSPME/GC-MS
FungiFusarium Graminearum 3AcDON ZFR 37yeast extract sucrose agarSPME/GC-MS
FungiFusarium Graminearum 3AcDON ZFR 51yeast extract sucrose agarSPME/GC-MS
FungiFusarium Graminearum NIVyeast extract sucrose agarSPME/GC-MS
FungiFusarium Graminearum NIV 357yeast extract sucrose agarSPME/GC-MS
FungiFusarium Graminearum NIV ZFR 119yeast extract sucrose agarSPME/GC-MS
FungiFusarium Graminearum NIV ZFR 23yeast extract sucrose agarSPME/GC-MS
FungiFusarium Graminearum NIV ZFR 48yeast extract sucrose agarSPME/GC-MS
FungiFusarium Graminearum NIV_5yeast extract sucrose agarSPME/GC-MS
FungiFusarium Graminearum NIV_6yeast extract sucrose agarSPME/GC-MS
FungiFusarium Graminearum NIV_7yeast extract sucrose agarSPME/GC-MS
FungiFusarium Graminearum NIV_8yeast extract sucrose agarSPME/GC-MS
FungiPenicillium Glabrum NRRL 766potato dextrose agar and Polyunsaturated Fatty AcidsSPME/ GC-MS
FungiPholiota SquarrosaMelin-Nor krans synthetic medium (modified)Headspace trapping ( using stir bar sorptive extraction )/ GC-MS
FungiPleurotus CystidiosusnaGC/MS, GC-O, AEDANo
FungiPleurotus Eryngii Var. TuoliensisnaGC/MS, GC-O, AEDANo
FungiRhizopus Stolonifer NRRL 54667potato dextrose agar and Polyunsaturated Fatty AcidsSPME/ GC-MS
FungiStropharia RugosoannulataMelin-Nor krans synthetic medium (modified)Headspace trapping ( using stir bar sorptive extraction )/ GC-MS
FungiTrichoderma VirideMelin-Nor krans synthetic medium (modified)Headspace trapping ( using stir bar sorptive extraction )/ GC-MS
FungiVerticillium LongisporumMelin-Nor krans synthetic medium (modified)Headspace trapping ( using stir bar sorptive extraction )/ GC-MS