Fentin acetate supplier | CasNO.900-95-8

Name
Fentin acetate
EINECS 212-984-0
CAS No. 900-95-8
Article Data23
CAS DataBase
Density 1.55 g/cm³
Solubility water: 28 mg/L (20 °C)
Melting Point 118-122 °C
Formula C₂₀H₁₈O₂Sn
Boiling Point 60 °C
Molecular Weight 409.072
Flash Point
Transport Information UN 3146
Appearance white crystalline solid
Safety 26-28-36/37/39-45-60-61
Risk Codes 24/25-26-37/38-40-41-48/23-50/53-63
Molecular Structure
Hazard Symbols N,T+
Synonyms Sunitron A;Suzu;TPTA;Tin triphenyl acetate;Tinestan;Triphenylacetostannane;VP 19-40;Stannane,(acetyloxy)triphenyl- (9CI);Stannane, acetoxytriphenyl- (8CI);Triphenyltinacetate (6CI);(Acetyloxy)triphenylstannane;Acetatotriphenylstannane;Acetoxytriphenylstannane;Batasan;Betafen;Brestan;Brestan 60;Brestanid;ENT25208;GC 6936;Liromatin;Lirostanol;NSC 76068;Phentinacetate;Fentin acetate;
PSA 26.30000
LogP 2.21660

Synthetic route

: 892-20-6
triphenylstannane

: 64-19-7
acetic acid

: 900-95-8
triphenyltin acetate

Conditions

Conditions	Yield
In n-heptane reaction of excess (C6H5)3SnH on refluxing for 3 h;;	85%
In not given reaction at 70°C for 0.5 h;;	17%

: 64-19-7
acetic acid

triphenyl tin-hydroxide: triphenyl tin-hydroxide

: 900-95-8
triphenyltin acetate

: 892-20-6
triphenylstannane

: 2587-82-8
tributyllead acetate

: 900-95-8
triphenyltin acetate

Conditions

Conditions	Yield
In not given byproducts: (C2H5)3PbH;

: 159113-64-1
triphenyl(4-t-butylphenoxo)tin(IV)

: 900-95-8
triphenyltin acetate

Conditions

Conditions	Yield
With acetic acid In benzene mixt. refluxed, resulting solid washed with petroleum ether; resulting solid washed with petroleum ether, dried under reduced pressure, elem. anal.;

: 42441-88-3
(CO)3CrC6H5Sn(C6H5)3

: 900-95-8
triphenyltin acetate

Conditions

Conditions	Yield
With acetic acid
With CH3COOH

: 64-19-7
acetic acid

: 17421-63-5, 17421-65-7
(Z)-1-ethoxy-2-triphenylstannylethene

A: 900-95-8
triphenyltin acetate

B: 109-92-2
ethyl vinyl ether

Conditions

Conditions	Yield
In chloroform-d1 Kinetics; (Ar); addn. of a soln. of acetic acid in CDCl3 to a soln. of tin compd. in CDCl3 at room temp.; detected by NMR;

...Expand

: 64-19-7
acetic acid

: 17421-65-7, 17421-63-5
(E)-1-ethoxy-2-triphenylstannylethene

A: 900-95-8
triphenyltin acetate

B: 109-92-2
ethyl vinyl ether

Conditions

Conditions	Yield
In chloroform-d1 Kinetics; (Ar); addn. of a soln. of acetic acid in CDCl3 to a soln. of tin compd. in CDCl3 at room temp.; detected by NMR;

...Expand

: 19464-46-1
acetic acid-(2-triphenylstannyl-ethyl ester)

: 900-95-8
triphenyltin acetate

Conditions

Conditions	Yield
In neat (no solvent) byproducts: CH2CH2; decomposition above 180 °C;;
In neat (no solvent) byproducts: CH2CH2; decomposition above 180 °C;;
Multi-step reaction with 2 steps 1: water 2: CH3COOH / neat (no solvent) View Scheme

: 24509-93-1
(C6H5)3SnCH(CH3)CH(CH3)OH

: 900-95-8
triphenyltin acetate

Conditions

Conditions	Yield
With acetic acid In methanol Kinetics; byproducts: CH3CHCHCH3;
With acetic acid In methanol Kinetics; byproducts: CH3CHCHCH3;

: 23604-58-2
(C6H5)3SnCH2C(CH3)2OH

: 900-95-8
triphenyltin acetate

Conditions

Conditions	Yield
With acetic acid In methanol Kinetics; byproducts: CH2C(CH3)2;
With acetic acid In methanol Kinetics; byproducts: CH2C(CH3)2;

: 23604-56-0
2-triphenylstannyl-ethanol

: 900-95-8
triphenyltin acetate

Conditions

Conditions	Yield
With acetic acid In neat (no solvent) Kinetics; byproducts: CH2CH2, H2O; reaction with CH3COOH in presence of HClO4;;
With CH3COOH In neat (no solvent) Kinetics; byproducts: CH2CH2, H2O; reaction with CH3COOH in presence of HClO4;;

: 6430-26-8
Acetyltriphenyllstannan

: 900-95-8
triphenyltin acetate

Conditions

Conditions	Yield
With oxygen
With O2

: 23604-57-1
(C6H5)3SnCH2CH(OH)CH3

: 900-95-8
triphenyltin acetate

Conditions

Conditions	Yield
With acetic acid In methanol Kinetics; byproducts: CH2CHCH3, H2O;
With acetic acid In methanol Kinetics; byproducts: CH2CHCH3, H2O;

: 64-19-7
acetic acid

: 351500-76-0, 351500-77-1
(Z)-1-ethylthio-2-triphenylstannylethene

A: 900-95-8
triphenyltin acetate

B: 627-50-9
vinyl ethylsulfide

Conditions

Conditions	Yield
In chloroform-d1 Kinetics; (Ar); addn. of a soln. of acetic acid in CDCl3 to a soln. of tin compd. in CDCl3 at room temp.; detected by NMR;

...Expand

: 64-19-7
acetic acid

: 351500-77-1, 351500-76-0
(E)-1-ethylthio-2-triphenylstannylethene

A: 900-95-8
triphenyltin acetate

B: 627-50-9
vinyl ethylsulfide

Conditions

Conditions	Yield
In chloroform-d1 Kinetics; (Ar); addn. of a soln. of acetic acid in CDCl3 to a soln. of tin compd. in CDCl3 at room temp.; detected by NMR;

...Expand

: 64-19-7
acetic acid

: Dimethyl-((Z)-2-phenyl-2-triphenylstannanyl-vinyl)-amine

A: 14846-39-0
(E)-N,N-dimethyl-2-phenylethen-1-amine

B: 900-95-8
triphenyltin acetate

Conditions

Conditions	Yield
In chloroform-d1 Kinetics; (Ar); addn. of a soln. of acetic acid in CDCl3 to a soln. of tin compd. in CDCl3 at room temp.; detected by NMR;

...Expand

: 64-19-7
acetic acid

: 351500-72-6, 351500-73-7
(Z)-1-ethoxy-2-triphenylstannylhex-1-ene

A: 14092-07-0
1-ethoxy-hex-1-ene

B: 900-95-8
triphenyltin acetate

Conditions

Conditions	Yield
In chloroform-d1 Kinetics; (Ar); addn. of a soln. of acetic acid in CDCl3 to a soln. of tin compd. in CDCl3 at room temp.; detected by NMR;

...Expand

: 64-19-7
acetic acid

: 351500-73-7, 351500-72-6
(E)-1-ethoxy-2-triphenylstannylhex-1-ene

A: 14092-07-0
1-ethoxy-hex-1-ene

B: 900-95-8
triphenyltin acetate

Conditions

Conditions	Yield
In chloroform-d1 Kinetics; (Ar); addn. of a soln. of acetic acid in CDCl3 to a soln. of tin compd. in CDCl3 at room temp.; detected by NMR;

...Expand

: 19464-43-8
β-methoxycarbonyl ethyl triphenyltin(IV)

: 900-95-8
triphenyltin acetate

Conditions

Conditions	Yield
Multi-step reaction with 2 steps 1: KOH / ethanol 2: CH3COOH / neat (no solvent) View Scheme

: 26274-73-7
2-(2-triphenylstannylethyl)-4,4,6-trimethyl-1,3,2-dioxaborinan

: 900-95-8
triphenyltin acetate

Conditions

Conditions	Yield
Multi-step reaction with 2 steps 1: H2O2 / ethanol; sodium hydroxide 2: CH3COOH / neat (no solvent) View Scheme

: 34666-89-2
bis(triphenylstannyl)magnesium

: 900-95-8
triphenyltin acetate

Conditions

Conditions	Yield
Multi-step reaction with 2 steps 1: CH3COCl 2: O2 View Scheme

: 892-20-6
triphenylstannane

: 900-95-8
triphenyltin acetate

Conditions

Conditions	Yield
Multi-step reaction with 3 steps 2: H2O2 / ethanol; sodium hydroxide 3: CH3COOH / neat (no solvent) View Scheme
Multi-step reaction with 2 steps 2: CH3COOH / neat (no solvent) View Scheme
Multi-step reaction with 2 steps 2: neat (no solvent) View Scheme
Multi-step reaction with 3 steps 2: water 3: CH3COOH / neat (no solvent) View Scheme
Multi-step reaction with 3 steps 2: KOH / ethanol 3: CH3COOH / neat (no solvent) View Scheme

: 4167-90-2
lithium triphenylstannide

: 900-95-8
triphenyltin acetate

Conditions

Conditions	Yield
Multi-step reaction with 2 steps 1: 1,2-dimethoxyethane 2: CH3COOH / neat (no solvent) View Scheme
Multi-step reaction with 2 steps 1: CH3COCl / tetrahydrofuran 2: O2 View Scheme

: sodium triphenylstannide

: 900-95-8
triphenyltin acetate

Conditions

Conditions	Yield
Multi-step reaction with 2 steps 1: diethyl ether 2: CH3COOH / neat (no solvent) View Scheme
Multi-step reaction with 2 steps 1: 1,2-dimethoxyethane 2: acetic acid / methanol View Scheme
Multi-step reaction with 2 steps 1: 1,2-dimethoxyethane 2: acetic acid / methanol View Scheme
Multi-step reaction with 2 steps 1: 1,2-dimethoxyethane 2: acetic acid / methanol View Scheme

: 900-95-8
triphenyltin acetate

: 555-31-7
aluminum isopropoxide

: 138977-01-2
Ph3SnOAl(OPri)2

Conditions

Conditions	Yield
In 5,5-dimethyl-1,3-cyclohexadiene for 6h; Reflux;	98%
In toluene exclusion of moisture, heated, isopropylacetate fractionated out continuously from 80°C to the boiling point of toluene; excess of toluene distd. off under reduced pressure; elem. anal.;	95%

: indium(I) bromide

: 110-18-9
N,N,N,N,-tetramethylethylenediamine

: 900-95-8
triphenyltin acetate

: Ph3SnIn(OAc)Br N,N,N',N'-tetramethylethanediamine adduct

Conditions

Conditions	Yield
In toluene The suspn. of InX and Ph3SnX in toluene was cooled to -20°C, diamine was added stirring was continued for about 1 h; allowed to warm to room temp. for 1-2 h (N2 atm.);; filtered, solid was washed with toluene and dried in vac. at room temp.; elem. anal.;;	98%

...Expand

: N-(benzoyl)-N'-(ferrocenylidene)hydrazine

: 900-95-8
triphenyltin acetate

: (C6H5)2Sn(C5H5FeC5H4CHNNCO(C6H5))2

Conditions

Conditions	Yield
In benzene equimolar amt. of educts refluxed in benzene for about 8 h; hot mixt. was filtered, filtrate concd. under vac. at 50°C, recrystd. from either benzene or chloroform, dried in vac., elem. anal.;	95%

: indium chloride

: 110-18-9
N,N,N,N,-tetramethylethylenediamine

: 900-95-8
triphenyltin acetate

: Ph3SnIn(OAc)Cl N,N,N',N'-tetramethylethanediamine adduct

Conditions

Conditions	Yield
In toluene The suspn. of InX and Ph3SnX in toluene was cooled to -20°C, diamine was added stirring was continued for about 1 h; allowed to warm to room temp. for 1-2 h (N2 atm.);; filtered, solid was washed with toluene and dried in vac. at room temp.; elem. anal.;;	94%

...Expand

: indium iodide

: 110-18-9
N,N,N,N,-tetramethylethylenediamine

: 900-95-8
triphenyltin acetate

: Ph3SnIn(OAc)I N,N,N',N'-tetramethylethanediamine adduct

Conditions

Conditions	Yield
In toluene The suspn. of InX and Ph3SnX in toluene was cooled to -20°C, diamine was added stirring was continued for about 1 h; allowed to warm to room temp. for 1-2 h (N2 atm.);; filtered, solid was washed with toluene and dried in vac. at room temp. recrysd. from THF-MeOH; elem. anal.;;	92%

...Expand

: 900-95-8
triphenyltin acetate

: 1064-10-4
hexaphenylditin

Conditions

Conditions	Yield
In N,N-dimethyl acetamide Electrolysis; supporting electrolite LiClO4; filtration, washing with methanol then ether;	91%

: 402731-31-1
C5H5FeC5H4CHNNHC(O)C6H4NO2

: 900-95-8
triphenyltin acetate

: (C6H5)2Sn(C5H5FeC5H4CHNNCO(C6H4NO2))2

Conditions

Conditions	Yield
In benzene equimolar amt. of educts refluxed in benzene for about 8 h; hot mixt. was filtered, filtrate concd. under vac. at 50°C, recrystd. from either benzene or chloroform, dried in vac., elem. anal.;	90%

: (C5H5)Fe(C5H4CHNNHCOC6H4Cl)

: 900-95-8
triphenyltin acetate

: 87854-63-5
(C6H5)3Sn(C5H5FeC5H4CHNNCO(C6H4Cl))

Conditions

Conditions	Yield
In benzene equimolar amt. of educts refluxed in benzene for about 8 h; hot mixt. was filtered, filtrate concd. under vac. at 50°C, recrystd. from either benzene or chloroform, dried in vac., elem. anal.;	85%

: formyl ferrocene-2-isonicotinoyl hydrazone

: 900-95-8
triphenyltin acetate

: (C6H5)2Sn(C5H5FeC5H4CHNNCO(C5H4N))2

Conditions

Conditions	Yield
In benzene equimolar amt. of educts refluxed in benzene for about 8 h; hot mixt. was filtered, filtrate concd. under vac. at 50°C, recrystd. from either benzene or chloroform, dried in vac., elem. anal.;	80%

: C5H5FeC5H4CHNNHC(O)C6H4OH

: 900-95-8
triphenyltin acetate

: (C6H5)2Sn(C5H5FeC5H4CHNNCO(C6H4OH))2

Conditions

Conditions	Yield
In benzene equimolar amt. of educts refluxed in benzene for about 8 h; hot mixt. was filtered, filtrate concd. under vac. at 50°C, recrystd. from either benzene or chloroform, dried in vac., elem. anal.;	78%

: 877-78-1, 7564-73-0
sodium piperazine-N,N'-bisdithiocarboxylate

: 900-95-8
triphenyltin acetate

: 77347-72-9
[(triphenyltin(IV))2 piperazine bis(dithiocarbamate)]

Conditions

Conditions	Yield
In ethanol byproducts: NaCH3COO; in a dry box flushed with N2; mixing an alc. soln. of dithiocarbamate with an alc. soln. of Sn-compd.; filtering off the ppt., washing with alc. and drying in vac.; elem. anal.;	70%

: bis(acetylacetonate)nickel(II)

: 7732-18-5
water

: 900-95-8
triphenyltin acetate

: [Ni((CH3CO)2CH)2((C6H5)3SnOH)]2

Conditions

Conditions	Yield
In tetrahydrofuran Sonication; sonicating (room temp., 30 min); filtering, crystn. on concg. and n-hexane addn. (-20°C, overnight); elem. anal.;	70%

...Expand

: 148-18-5
sodium N,N-diethyldithiocarbamate

: 900-95-8
triphenyltin acetate

: 1803-18-5
(C6H5)3Sn(S2CN(C2H5)2)

Conditions

Conditions	Yield
In ethanol; chloroform byproducts: NaCH3COO; in a dry box flushed with N2; mixing an alc./CHCl3 soln. of dithiocarbamate with Sn-compd. in alc., stirring for ca 2 h; elem. anal.;	60%

: 13283-31-3
borane

: 900-95-8
triphenyltin acetate

: 141-43-5
ethanolamine

A: 98-80-6
phenylboronic acid

B: 15614-89-8
2-aminoethoxydiphenyl borate

Conditions

Conditions	Yield
With water In tetrahydrofuran; diethyl ether; ethanol to THF soln. of Sn compd. added BH3 (N2, room temp.),refluxed (1 h), added H2O,stirred (30 min),extd. (Et2O), dried (MgSO4),evapd. in vac.,heated with pentane,filtered PhB(OH)2,filtrate evapd.,added Et2O,EtOH soln. of HOCH2CH2NH2 added,refluxed (30 min); filtered hot, complex pptd. by cooling, filtered; PhB(OH)2 recrystd. from H2O; compds. identified by m. p., IR, NMR;

Yield

With water In tetrahydrofuran; diethyl ether; ethanol to THF soln. of Sn compd. added BH3 (N2, room temp.),refluxed (1 h), added H2O,stirred (30 min),extd. (Et2O), dried (MgSO4),evapd. in vac.,heated with pentane,filtered PhB(OH)2,filtrate evapd.,added Et2O,EtOH soln. of HOCH2CH2NH2 added,refluxed (30 min); filtered hot, complex pptd. by cooling, filtered; PhB(OH)2 recrystd. from H2O; compds. identified by m. p., IR, NMR;

...Expand

Fentin acetate Consensus Reports

EPA Extremely Hazardous Substances List. Reported in EPA TSCA Inventory.

Fentin acetate Standards and Recommendations

OSHA PEL: TWA 0.1 mg(Sn)/m³ (skin)
ACGIH TLV: TWA 0.1 mg(Sn)/m³; STEL 0.2 mg(Sn)/m³ (skin).
NIOSH REL: (Organotin Compounds) TWA 0.1 mg(Sn)/m³

Fentin acetate Analytical Methods

For occupational chemical analysis use NIOSH: organotin compounds 5504.

Fentin acetate Specification

The Fentin acetate, with the CAS registry number 900-95-8, is also known as Triphenylaceto stannane. It belongs to the product categories of Herbicide; Organotin Compound. Its EINECS number is 212-984-0. This chemical is an organotin compound with the formula C₂₀H₁₈O₂Sn and its molecular weight is 409.05. What's more, its systematic name is Triphenylstannanylium acetate. This chemical is stable at common pressure and temperature, and it should be sealed and stored in a cool, ventilated and dry place. Moreover, it should be protected from oxides. Its classification codes are: (1)Agricultural Chemical; (2)Fungicide, bactericide, wood preservative; (3)Fungicides, industrial; (4)Herbicide; (5)Insect attractant, repellent and chemosterilant; (6)Molluscicide; (7)Mutation data; (8)Noxae; (9)Organometallic; (10)Pesticides; (11)Reproductive Effect; (12)Teratogens; (13)Tumor data. It is a colourless solid that is used as a fungicide.

When you are using this chemical, please be cautious about it as the following:
This chemical is toxic in contact with skin and if swallowed and is very toxic by inhalation. It is irritating to respiratory system and skin. It has a limited evidence of a carcinogenic effect and a risk of serious damage to eyes. This substance is toxic as it has a danger of serious damage to health by prolonged exposure through inhalation. It is very toxic to aquatic organisms as it may cause long-term adverse effects in the aquatic environment. It has a possible risk of harm to the unborn child. In case of contact with eyes, you should rinse immediately with plenty of water and seek medical advice. When using it, you need wear suitable protective gloves and eye/face protection. In case of accident or if you feel unwell, you must seek medical advice immediately (show the label where possible). This material and its container must be disposed of as hazardous waste. You should avoid releasing it to the environment, and you need refer to special instructions/safety data sheet.

You can still convert the following datas into molecular structure:
(1)SMILES: [O-]C(=O)C.c3c([Sn+](c1ccccc1)c2ccccc2)cccc3
(2)Std. InChI: InChI=1S/3C6H5.C2H4O2.Sn/c3*1-2-4-6-5-3-1;1-2(3)4;/h3*1-5H;1H3,(H,3,4);/q;;;;+1/p-1
(3)Std. InChIKey: WDQNIWFZKXZFAY-UHFFFAOYSA-M

The toxicity data is as follows:

Organism	Test Type	Route	Reported Dose (Normalized Dose)	Effect	Source
bird - wild	LD50	oral	100mg/kg (100mg/kg)		Archives of Environmental Contamination and Toxicology. Vol. 12, Pg. 355, 1983.
chicken	LD	oral	> 300mg/kg (300mg/kg)		British Journal of Industrial Medicine. Vol. 23, Pg. 222, 1966.
chicken	LDLo	intraperitoneal	40mg/kg (40mg/kg)	BEHAVIORAL: MUSCLE WEAKNESS BEHAVIORAL: ALTERED SLEEP TIME (INCLUDING CHANGE IN RIGHTING REFLEX)	British Journal of Industrial Medicine. Vol. 23, Pg. 222, 1966.
guinea pig	LD50	intraperitoneal	3740ug/kg (3.74mg/kg)	BEHAVIORAL: MUSCLE WEAKNESS PERIPHERAL NERVE AND SENSATION: FLACCID PARALYSIS WITHOUT ANESTHESIA (USUALLY NEUROMUSCULAR BLOCKAGE)	British Journal of Industrial Medicine. Vol. 23, Pg. 222, 1966.
guinea pig	LD50	oral	21mg/kg (21mg/kg)		"Pflanzenschutz-und Schaedlingsbekaempfungsmittel: Abriss einer Toxikologie und Therapie von Vergiftungen," 2nd ed., Klimmer, O.R., Hattingen, Fed. Rep. Ger., Hundt-Verlag, 1971Vol. -, Pg. 127, 1971.
guinea pig	LDLo	skin	180mg/kg (180mg/kg)		British Journal of Industrial Medicine. Vol. 23, Pg. 222, 1966.
guinea pig	LDLo	skin	180mg/kg (180mg/kg)	BEHAVIORAL: MUSCLE WEAKNESS PERIPHERAL NERVE AND SENSATION: FLACCID PARALYSIS WITHOUT ANESTHESIA (USUALLY NEUROMUSCULAR BLOCKAGE)	British Journal of Industrial Medicine. Vol. 23, Pg. 222, 1966.
mouse	LD50	intraperitoneal	7900ug/kg (7.9mg/kg)	BEHAVIORAL: SOMNOLENCE (GENERAL DEPRESSED ACTIVITY)	British Journal of Industrial Medicine. Vol. 23, Pg. 222, 1966.
mouse	LD50	intravenous	18mg/kg (18mg/kg)		U.S. Army Armament Research & Development Command, Chemical Systems Laboratory, NIOSH Exchange Chemicals. Vol. NX#00648,
mouse	LD50	oral	81mg/kg (81mg/kg)	BEHAVIORAL: SOMNOLENCE (GENERAL DEPRESSED ACTIVITY)	British Journal of Industrial Medicine. Vol. 23, Pg. 222, 1966.
mouse	LD50	subcutaneous	44mg/kg (44mg/kg)		Guide to the Chemicals Used in Crop Protection. Vol. 6, Pg. 281, 1973.
quail	LD50	oral	100mg/kg (100mg/kg)		Journal of Reproduction and Fertility. Vol. 48, Pg. 371, 1976.
rabbit	LD50	intraperitoneal	10mg/kg (10mg/kg)	LUNGS, THORAX, OR RESPIRATION: DYSPNEA	Arzneimittel-Forschung. Drug Research. Vol. 13, Pg. 432, 1963.
rabbit	LD50	oral	30mg/kg (30mg/kg)		"Wirksubstanzen der Pflanzenschutz und Schadlingsbekampfungsmittel," Perkow, W., Berlin, Verlag Paul Parey, 1971-1976Vol. -, Pg. -, 1971/1976.
rat	LD50	intraperitoneal	8500ug/kg (8.5mg/kg)	BEHAVIORAL: SOMNOLENCE (GENERAL DEPRESSED ACTIVITY)	British Journal of Industrial Medicine. Vol. 23, Pg. 222, 1966.
rat	LD50	intravenous	18mg/kg (18mg/kg)		Guide to the Chemicals Used in Crop Protection. Vol. 6, Pg. 281, 1973.
rat	LD50	oral	125mg/kg (125mg/kg)		Tin and Its Uses. Vol. 43, Pg. 9, 1958.
rat	LD50	skin	450mg/kg (450mg/kg)		Arzneimittel-Forschung. Drug Research. Vol. 19, Pg. 934, 1969.

Product Name

Fentin acetate

Synthetic route

Fentin acetate Consensus Reports

Fentin acetate Standards and Recommendations

Fentin acetate Analytical Methods

Fentin acetate Specification

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