TRIMETHYLSULFONIUM IODIDE supplier

Name
Trimethylsulfonium iodide
EINECS 218-555-4
CAS No. 2181-42-2
Article Data69
CAS DataBase
Density 1.6554 (estimate)
Solubility Soluble in water
Melting Point 215-220 °C(lit.)
Formula C₃H₉S^.I
Boiling Point
Molecular Weight 204.075
Flash Point
Transport Information
Appearance white to yellowish crystalline solid
Safety 26-36
Risk Codes 36/37/38
Molecular Structure
Hazard Symbols Xi
Synonyms Trimethylsulfonium iodide (6CI,7CI);Sulfonium,trimethyl-, iodide (8CI,9CI);
PSA 25.30000
LogP -2.50190

Synthetic route

: 74-93-1
methylthiol

: 74-88-4
methyl iodide

: 2181-42-2
trimethylsulphonium iodide

Conditions

Conditions	Yield
In chloroform for 5h; Ambient temperature;	100%

: 75-18-3
dimethylsulfide

: 75-11-6
diiodomethane

: 2181-42-2
trimethylsulphonium iodide

Conditions

Conditions	Yield
In acetonitrile at 50℃; for 168h; Methylation;	96%

: 75-18-3
dimethylsulfide

: 74-88-4
methyl iodide

: 2181-42-2
trimethylsulphonium iodide

Conditions

Conditions	Yield
In ethanol for 24h; Ambient temperature;	90%
at 20℃; for 16h; Inert atmosphere;	78%
at 25℃; for 15h;	66%

: 74-88-4
methyl iodide

/PCATD358--130/: /PCATD358--130/

: 2181-42-2
trimethylsulphonium iodide

Conditions

Conditions	Yield
In tetrahydrofuran 1.) -78 deg C, 6 h, 2.) r.t., 48 h;	72%

: 75-18-3
dimethylsulfide

: 507-02-8
acetyl iodide

: 2181-42-2
trimethylsulphonium iodide

: 75-18-3
dimethylsulfide

: 2181-42-2
trimethylsulphonium iodide

Conditions

Conditions	Yield
With iodine at 110 - 120℃;

: 64-17-5
ethanol

: 38263-90-0
dimethyl-ethylsulphonium iodide

: 2181-42-2
trimethylsulphonium iodide

: 858242-68-9
(4-bromo-phenyl)-phenyl-[2]pyridyl-phosphine sulfide

: 74-88-4
methyl iodide

: 2181-42-2
trimethylsulphonium iodide

Conditions

Conditions	Yield
at 100℃;

: 1072-43-1
propylene sulphide

: 74-88-4
methyl iodide

: 2181-42-2
trimethylsulphonium iodide

: 17459-59-5
diethylmethylsulfonium iodide

A: 2181-42-2
trimethylsulphonium iodide

B: 1829-92-1
triethylsulfonium iodide

Conditions

Conditions	Yield
durch Destillation oder bei mehrstuendigem Kochen;

: 67-56-1
methanol

: 79-40-3
dithiooxamide

: 74-88-4
methyl iodide

A: 471-46-5
Oxalamide

B: 2181-42-2
trimethylsulphonium iodide

Conditions

Conditions	Yield
at 150℃;

...Expand

: 100-53-8
phenylmethanethiol

: 74-88-4
methyl iodide

A: 150-60-7
dibenzyl disulphide

B: 2181-42-2
trimethylsulphonium iodide

Conditions

Conditions	Yield
at 100℃; unter Druck;

...Expand

: 2227-79-4
benzenecarbothioamide

: 74-88-4
methyl iodide

A: 93-58-3
benzoic acid methyl ester

B: 2181-42-2
trimethylsulphonium iodide

Conditions

Conditions	Yield
at 130℃; im geschlossenen Rohr;

...Expand

: 1086240-66-5
6-(methylthio)-2(Z)-hexene

: 67-64-1
acetone

: 74-88-4
methyl iodide

: 2181-42-2
trimethylsulphonium iodide

Conditions

Conditions	Yield
at 120℃;

...Expand

: 67-56-1
methanol

: 291-21-4
[1,3,5]trithiane

: 74-88-4
methyl iodide

A: 109-87-5
Dimethoxymethane

B: 2181-42-2
trimethylsulphonium iodide

Conditions

Conditions	Yield
at 80 - 100℃; im Rohr;

...Expand

: 291-21-4
[1,3,5]trithiane

: 74-88-4
methyl iodide

: 2181-42-2
trimethylsulphonium iodide

: 1226972-19-5, 1226972-27-5
trithioacetaldehyde

: 74-88-4
methyl iodide

: 2181-42-2
trimethylsulphonium iodide

Conditions

Conditions	Yield
β-trithioacetaldehyde;

: 67-56-1
methanol

: 859918-72-2
carbamoylsulfanyl-acetic acid methyl ester

: 74-88-4
methyl iodide

: 2181-42-2
trimethylsulphonium iodide

Conditions

Conditions	Yield
at 110℃;

...Expand

: 556-64-9
methyl thiocyanate

: 74-88-4
methyl iodide

: 2181-42-2
trimethylsulphonium iodide

Conditions

Conditions	Yield
at 100℃; im geschlossenen Rohr;

: 2314-48-9
(S,S)-dimethyl trithiocarbonate

: 74-88-4
methyl iodide

: 2181-42-2
trimethylsulphonium iodide

Conditions

Conditions	Yield
at 80 - 90℃;
3 Monate lang im Dunkel stehenlaesst und die Krystalle mit Alkohol und schwefliger Saeure erwaermt;
at 80 - 90℃;
im Dunkeln bei monatelanger Einw. und Behandeln des entstandenen Polyjodids mit waessrig-alkoholischer schwefliger Saeure;

: 66481-77-4
ethyl isoamyl sulfide

: 74-88-4
methyl iodide

: 2181-42-2
trimethylsulphonium iodide

Conditions

Conditions	Yield
at 100℃;

: 152-20-5
O,O,S-trimethyl phosphorothioate

: 74-88-4
methyl iodide

: 2181-42-2
trimethylsulphonium iodide

Conditions

Conditions	Yield
at 100℃;

: 152-18-1
O,O,O-trimethylthiophosphate

: 74-88-4
methyl iodide

A: 152-20-5
O,O,S-trimethyl phosphorothioate

B: 2181-42-2
trimethylsulphonium iodide

Conditions

Conditions	Yield
at 100℃;

...Expand

: 64-17-5
ethanol

: 592-88-1
diallyl sulphide

: 74-88-4
methyl iodide

: 2181-42-2
trimethylsulphonium iodide

...Expand

: 624-92-0
Dimethyldisulphide

: 74-88-4
methyl iodide

: 2181-42-2
trimethylsulphonium iodide

Conditions

Conditions	Yield
at 100℃;

: 3658-80-8
dimethyltrisulfane

: 74-88-4
methyl iodide

: 2181-42-2
trimethylsulphonium iodide

Conditions

Conditions	Yield
at 100℃;

: 10152-76-8
allylmethyl sulfide

: 74-88-4
methyl iodide

: 2181-42-2
trimethylsulphonium iodide

: 592-88-1
diallyl sulphide

: 74-88-4
methyl iodide

: 2181-42-2
trimethylsulphonium iodide

Conditions

Conditions	Yield
at 24℃; Geschwindigkeit dieser Reaktion;

: 542-90-5
ethyl isothiocyanate

: 74-88-4
methyl iodide

: 2181-42-2
trimethylsulphonium iodide

Conditions

Conditions	Yield
at 105 - 108℃; im zugeschmolzenen Rohr;

: 625-60-5
ethyl thioacetate

: 74-88-4
methyl iodide

: 2181-42-2
trimethylsulphonium iodide

: 4903-09-7
3-chloro-4-methoxy-benzaldehyde

: 2181-42-2
trimethylsulphonium iodide

: 2-(3-chloro-4-methoxyphenyl)oxirane

Conditions

Conditions	Yield
With potassium hydroxide In dimethyl sulfoxide at 40℃; for 7h; Corey-Tschaikosky Epoxidation; Inert atmosphere;	100%
With sodium hydride; dimethyl sulfoxide 1.) THF, 0 deg C, 5 min, 2.) a) 0 deg C, 15 min, b) 25 deg C, 2h; Multistep reaction;

: 2181-42-2
trimethylsulphonium iodide

: 100-52-7
benzaldehyde

: 96-09-3
styrene oxide

Conditions

Conditions	Yield
With sodium hydroxide In dichloromethane; water at 38℃; for 48h;	100%
Stage #1: trimethylsulphonium iodide With sodium hydroxide In water for 0.166667h; Corey-Chaykovsky reaction; Stage #2: benzaldehyde With 1,3-bis[3,5-bis(trifluoromethyl)phenyl]urea In dichloromethane; water at 20℃; for 24h; Inert atmosphere;	93%
With potassium hydroxide In acetonitrile at 60℃; for 3h;	87%

: 119-61-9
benzophenone

: 2181-42-2
trimethylsulphonium iodide

: 882-59-7
1,1-diphenyloxirane

Conditions

Conditions	Yield
Stage #1: trimethylsulphonium iodide With sodium hydride In tetrahydrofuran; dimethyl sulfoxide; mineral oil at 20℃; for 0.5h; Schlenk technique; Inert atmosphere; Stage #2: benzophenone In tetrahydrofuran; dimethyl sulfoxide; mineral oil at 0 - 20℃; Inert atmosphere; Schlenk technique;	100%
With sodium hydride In tetrahydrofuran; dimethyl sulfoxide at 0 - 25℃; for 16h; Corey-Chaykovsky reaction;	98%
With potassium hydroxide In tert-butyl alcohol at 40 - 50℃; for 12h; Corey-Chaykovsky epoxidation;	97%

: 2181-42-2
trimethylsulphonium iodide

: 199117-07-2
5-methoxy-2-(naphthalen-1-yl)benzaldehyde

: 199117-08-3
1-(2-(epoxyethyl)-4-methoxyphenyl)naphthalene

Conditions

Conditions	Yield
With sodium hydroxide; tetra-(n-butyl)ammonium iodide In dichloromethane for 96h; Cycloaddition; Heating;	100%

: 2181-42-2
trimethylsulphonium iodide

: 199117-10-7
2-(9-phenanthryl)-5-methoxybenzaldehyde

: 199117-11-8
9-(2-(epoxyethyl)-4-methoxyphenyl)phenanthrene

Conditions

Conditions	Yield
With sodium hydroxide; tetra-(n-butyl)ammonium iodide In dichloromethane for 96h; Cycloaddition; Heating;	100%

: 2181-42-2
trimethylsulphonium iodide

: 354529-43-4
3-(2-Formyl-4-methoxyphenyl)dibenzo[b,d]thiophene

: 2-(2-dibenzothiophen-3-yl-5-methoxy-phenyl)-oxirane

Conditions

Conditions	Yield
With potassium hydroxide In acetonitrile at 60 - 65℃; for 20h;	100%

: 2181-42-2
trimethylsulphonium iodide

: 485824-06-4
4-(2-formyl-4-methoxyphenyl)dibenzothiophene

: 485824-12-2
4-(2-epoxyethyl-4-methoxyphenyl)dibenzothiophene

Conditions

Conditions	Yield
With potassium hydroxide In acetonitrile at 65 - 70℃; for 20h;	100%

: 2181-42-2
trimethylsulphonium iodide

: 828940-60-9
5-benzyloxy-4,7,8-trimethoxy-naphthalene-2-carbaldehyde

: 828940-42-7
2-(5-benzyloxy-4,7,8-trimethoxy-naphthalen-2-yl)-oxirane

Conditions

Conditions	Yield
With sodium hydride In tetrahydrofuran; dimethyl sulfoxide at 0℃;	100%

: 409346-73-2
6-fluoro-3,4-dihydro-2H-1-benzopyran-2-carboxaldehyde

: 2181-42-2
trimethylsulphonium iodide

: 99199-90-3
6-fluoro-3,4-dihydro-2-oxiranyl-2H-1-benzopyran

Conditions

Conditions	Yield
Stage #1: trimethylsulphonium iodide With sodium hydride In dimethyl sulfoxide cooling; Stage #2: 6-fluoro-3,4-dihydro-2H-1-benzopyran-2-carboxaldehyde In dimethyl sulfoxide at 20℃; for 1h;	100%

: 842167-37-7
7-(2-formyl-4-methoxyphenyl)benzo[b]thiophene

: 2181-42-2
trimethylsulphonium iodide

: 842167-38-8
2-(2-benzo[b]thiophen-7-yl-5-methoxy-phenyl)-oxirane

Conditions

Conditions	Yield
With potassium hydroxide In acetonitrile at 65℃; for 16h;	100%

: 2-(4-methoxy-5,6,7,8-tetrahydro-1-naphthyl)thiophene-3-carboxaldehyde

: 2181-42-2
trimethylsulphonium iodide

: 874143-00-7
2-[2-(4-methoxy-5,6,7,8-tetrahydro-naphthalen-1-yl)-thiophen-3-yl]-oxirane

Conditions

Conditions	Yield
With potassium hydroxide In acetonitrile at 60 - 65℃; for 13h;	100%

: 874142-97-9
3-(4-methoxy-5,6,7,8-tetrahydro-1-naphthyl)thiophene-2-carboxaldehyden

: 2181-42-2
trimethylsulphonium iodide

: 874142-98-0
2-[3-(4-methoxy-5,6,7,8-tetrahydro-naphthalen-1-yl)-thiophen-2-yl]-oxirane

Conditions

Conditions	Yield
With potassium hydroxide In acetonitrile at 60 - 65℃; for 15h;	100%

: N-t-butylcarbonyl-6-(2-isopropoxy-4-formylphenyl)-pyridin-2-ylamine

: 2181-42-2
trimethylsulphonium iodide

: 221111-41-7
N-t-butylcarbonyl-6-(2-isopropoxy-4-oxiranylphenyl)-pyridin-2-ylamine

Conditions

Conditions	Yield
With potassium hydroxide In water; acetonitrile at 60℃; for 2.5h;	100%
With potassium hydroxide; N2 In water; acetonitrile
With potassium hydroxide; N2 In water; acetonitrile

: 362-08-3, 7683-30-9
2-methoxyestrone

: 2181-42-2
trimethylsulphonium iodide

: 752246-12-1
3-hydroxy-2-methoxyestra-1,3,5(10)-triene-17β-spiro-1',2'-oxirane

Conditions

Conditions	Yield
Stage #1: 2-methoxyestrone; trimethylsulphonium iodide With potassium tert-butylate In DMF (N,N-dimethyl-formamide) at 10 - 20℃; for 0.5h; Stage #2: With water; ammonium chloride In DMF (N,N-dimethyl-formamide) at 0℃;	100%

: 2181-42-2
trimethylsulphonium iodide

: 29668-44-8
2,3-dihydro-benzo[1,4]dioxin-6-carbaldehyde

: 389124-25-8
6-Oxiranyl-2,3-dihydro-benzo[1,4]dioxine

Conditions

Conditions	Yield
With potassium hydroxide; water In acetonitrile at 60℃; for 1.5h;	100%

aqueous sodium chloride: aqueous sodium chloride

: 79-77-6
(E)-β-ionone

: 2181-42-2
trimethylsulphonium iodide

: 58689-13-7
2-Methyl-2-[2-(2,6,6-trimethyl-1-cyclohexen-1-yl)ethenyl]oxirane

Conditions

Conditions	Yield
In tetrahydrofuran; water; dimethyl sulfoxide; mineral oil; pentane	100%

...Expand

: 90-90-4
(4-bromophenyl)(phenyl)methanone

: 2181-42-2
trimethylsulphonium iodide

: 1070671-69-0
2-(4-bromophenyl)-2-phenyloxirane

Conditions

Conditions	Yield
Stage #1: trimethylsulphonium iodide With sodium hydride In tetrahydrofuran at 55℃; for 6h; Stage #2: (4-bromophenyl)(phenyl)methanone In tetrahydrofuran at 55℃; for 16h;	100%

: 241139-90-2
3β-((triisopropylsilyl)oxy)pregn-5-en-20-one

: 2181-42-2
trimethylsulphonium iodide

: 1038992-96-9
3β-(triisopropylsiloxy)-22-homopregn-5-en-20R,22-epoxide

Conditions

Conditions	Yield
Stage #1: trimethylsulphonium iodide With potassium hexamethylsilazane In tetrahydrofuran at -5℃; for 0.25h; Stage #2: 3β-((triisopropylsilyl)oxy)pregn-5-en-20-one In tetrahydrofuran at -65 - 25℃; for 3.83h;	100%

: 99847-42-4
(4-chlorophenyl)(4-iodophenyl)methanone

: 2181-42-2
trimethylsulphonium iodide

: 857532-00-4
(RS)-2-(4-chloro-phenyl)-2-(4-iodo-phenyl)-oxirane

Conditions

Conditions	Yield
With potassium tert-butylate In dimethyl sulfoxide at 20℃; for 3h; Product distribution / selectivity;	100%
Stage #1: trimethylsulphonium iodide With sodium hydride In dimethyl sulfoxide for 0.75h; Stage #2: (4-chlorophenyl)(4-iodophenyl)methanone In dimethyl sulfoxide at 20℃; for 24h;	97%
	97%
Stage #1: trimethylsulphonium iodide With sodium hydride In dimethyl sulfoxide for 0.5h; Stage #2: (4-chlorophenyl)(4-iodophenyl)methanone In dimethyl sulfoxide at 20℃; for 24h; Product distribution / selectivity;	97%
Stage #1: trimethylsulphonium iodide With sodium hydride In dimethyl sulfoxide for 0.5h; Stage #2: (4-chlorophenyl)(4-iodophenyl)methanone In dimethyl sulfoxide at 20℃; for 24h;	97%

: 2181-42-2
trimethylsulphonium iodide

: 7364-15-0
trimethylsulfonium azide

Conditions

Conditions	Yield
With silver(I) azide In water at 0 - 20℃; for 2.5h;	100%

: 741705-66-8
C14H16N2O

: 2181-42-2
trimethylsulphonium iodide

: C15H18N2O

Conditions

Conditions	Yield
Stage #1: trimethylsulphonium iodide With sodium hydride In dimethyl sulfoxide at 20℃; for 0.25h; Stage #2: C14H16N2O In dimethyl sulfoxide for 3h;	100%

: 1617510-33-4
C16H10O2S2

: 2181-42-2
trimethylsulphonium iodide

: 1617510-38-9
C18H14O2S2

Conditions

Conditions	Yield
With potassium hydroxide In acetonitrile at 25 - 60℃; for 3h; Inert atmosphere;	100%

: (E)-4-(2-(((tert-butyldimethylsilyl)oxy)methyl)-6,6-dimethylcyclohex-1-en-1-yl)but-3-en-2-one

: 2181-42-2
trimethylsulphonium iodide

: (E)-tert-butyl((3,3-dimethyl-2-(2-(2-methyloxiran-2-yl)vinyl)cyclohex-1-en-1-yl)methoxy)dimethylsilane

Conditions

Conditions	Yield
Stage #1: trimethylsulphonium iodide With dimsylsodium In tetrahydrofuran; dimethyl sulfoxide at -5℃; Corey-Tschaikosky Epoxidation; Inert atmosphere; Stage #2: (E)-4-(2-(((tert-butyldimethylsilyl)oxy)methyl)-6,6-dimethylcyclohex-1-en-1-yl)but-3-en-2-one In tetrahydrofuran; dimethyl sulfoxide at 0℃; for 1h; Inert atmosphere;	100%

: (3E)-4-(3-isopropyldimethylsilyloxy-2,6,6-trimethylcyclohex-1-en-1-yl)but-3-en-2-one

: 2181-42-2
trimethylsulphonium iodide

: (E)-isopropyldimethyl((2,4,4-trimethyl-3-(2-(2-methyloxiran-2-yl)vinyl)cyclohex-2-en-1-yl)oxy)silane

Conditions

Conditions	Yield
Stage #1: trimethylsulphonium iodide With dimsylsodium In tetrahydrofuran; dimethyl sulfoxide at -5℃; Corey-Tschaikosky Epoxidation; Inert atmosphere; Stage #2: (3E)-4-(3-isopropyldimethylsilyloxy-2,6,6-trimethylcyclohex-1-en-1-yl)but-3-en-2-one In tetrahydrofuran; dimethyl sulfoxide at -5℃; for 0.75h; Inert atmosphere;	100%

: 2181-42-2
trimethylsulphonium iodide

: 29668-43-7
2,3-dihydro-benzo[1,4]dioxine-5-carbaldehyde

: 5-(oxiran-2-yl)-2,3-dihydro-1,4-benzodioxine

Conditions

Conditions	Yield
With potassium hydroxide In dimethyl sulfoxide at 40℃; for 7h; Corey-Tschaikosky Epoxidation; Inert atmosphere;	100%

: 6,6'-(thiophene-2,5-diyl)bis(3-octylbenzaldehyde)

: 2181-42-2
trimethylsulphonium iodide

: 2,5-bis(4-octyl-2-(oxiran-2-yl)phenyl)thiophene

Conditions

Conditions	Yield
With potassium hydroxide In acetonitrile at 60℃; for 4h; Inert atmosphere;	100%
With potassium hydroxide In acetonitrile at 60℃; for 4h; Johnson-Corey-Chaykovsky Reaction; Inert atmosphere; Schlenk technique;

: 2,5-bis(6-octylbenzo[b]thiophen-2-yl)-1,4-phthalaldehyde

: 2181-42-2
trimethylsulphonium iodide

: 2,2′-(2,5-bis(6-octylbenzo[b]thiophen-2-yl)-1,4-phenylene)bis(oxirane)

Conditions

Conditions	Yield
With potassium hydroxide In acetonitrile at 60℃; for 3h; Schlenk technique; Inert atmosphere;	100%

: 10363-27-6
2-methylcyclooctanone

: 2181-42-2
trimethylsulphonium iodide

: 4-methyl-1-oxaspiro[2.7]decane

Conditions

Conditions	Yield
With potassium tert-butylate at 20℃;	100%

: 22442-07-5
2-benzylcyclooctan-1-one

: 2181-42-2
trimethylsulphonium iodide

: 4-benzyl-1-oxaspiro[2.7]decane

Conditions

Conditions	Yield
With potassium tert-butylate at 20℃;	100%

TRIMETHYLSULFONIUM IODIDE Chemical Properties

Molecular Formula: C₃H₉IS
Formula Weight: 204.07
Synonyms: Trimethylsulfonium iodine ; trimethylsulfone iodide ; Sulfonium, trimethyl-, iodide ; Trimethylsulfoniumiodid
Melting Point: 215-220^°C(lit.)
Water Solubility : TRIMETHYLSULFONIUM IODIDE (2181-42-2) is soluble
Sensitive of TRIMETHYLSULFONIUM IODIDE (2181-42-2) : Light Sensitive
Chemical Properties: TRIMETHYLSULFONIUM IODIDE (2181-42-2) is a white to yellowish crystalline solid

TRIMETHYLSULFONIUM IODIDE Toxicity Data With Reference

1.	ipr-rat LDLo:88 mg/kg	TXAPA9 Toxicology and Applied Pharmacology. 20 (1971),135.
2.	scu-mus LDLo:300 mg/kg	JPETAB Journal of Pharmacology and Experimental Therapeutics. 25 (1925),315.
3.	ivn-mus LD50:18 mg/kg	CSLNX* U.S. Army Armament Research & Development Command, Chemical Systems Laboratory, NIOSH Exchange Chemicals. (Aberdeen Proving Ground, MD 21010) NX#02185 .

TRIMETHYLSULFONIUM IODIDE Consensus Reports

Reported in EPA TSCA Inventory.

TRIMETHYLSULFONIUM IODIDE Safety Profile

Safety: CAUTION: May irritate eyes, skin, and respiratory tract
Hazard Codes : Xi: Irritant
Risk Statements : 36/37/38: Irritating to eyes, respiratory system and skin
Safety Statements : 26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice
36: Wear suitable protective clothing
WGK Germany : 3
RTECS : WR8750000
F : 8: Photosensitive
HS Code : 29309070
Poison by intraperitoneal, subcutaneous, and intravenous routes. When heated to decomposition it emits very toxic fumes of I⁻ and SO_x. See also IODIDES.

TRIMETHYLSULFONIUM IODIDE Specification

Storage of TRIMETHYLSULFONIUM IODIDE (2181-42-2): Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances. Keep container closed when not in use.

Product Name

Trimethylsulfonium iodide

Synthetic route

TRIMETHYLSULFONIUM IODIDE Chemical Properties

TRIMETHYLSULFONIUM IODIDE Toxicity Data With Reference

TRIMETHYLSULFONIUM IODIDE Consensus Reports

TRIMETHYLSULFONIUM IODIDE Safety Profile

TRIMETHYLSULFONIUM IODIDE Specification

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