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13253-44-6

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Basic Information
CAS No.: 13253-44-6
Name: 5-(2-Methylthioethyl)hydantoin
Article Data: 29
Molecular Structure:
Molecular Structure of 13253-44-6 (5-(2-Methylthioethyl)hydantoin)
Formula: C6H10 N2 O2 S
Molecular Weight: 174.224
Synonyms: Hydantoin,5-[2-(methylthio)ethyl]- (6CI,7CI,8CI); (?à)-5-[2-(Methylthio)ethyl]hydantoin; 5-(b-Methylmercaptoethyl)hydantoin;5-[2-(Methylthio)ethyl]hydantoin; 5-[b-(Methylthio)ethyl]hydantoin; DL-5-(b-Methylmercaptoethyl)hydantoin;DL-5-[2-(Methylthio)ethyl]hydantoin; Methionine hydantoin
EINECS: 236-238-9
Density: 1.228g/cm3
Melting Point: 108°C
Boiling Point: °Cat760mmHg
Flash Point: °C
Hazard Symbols: Low toxicity by ingestion and skin contact.
Safety: Low toxicity by ingestion and skin contact. When heated to decomposition it emits toxic vapors of NOx and SOx.
PSA: 83.50000
LogP: 0.60510
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Conditions
ConditionsYield
In water at 80℃; for 2h;99%
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Conditions
ConditionsYield
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methylthiol

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3-cyano-3-hydroxy-1-propene

A

13253-44-6

5-[2-(methylthio)ethyl]imidazolidine-2,4-dione

B

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2-[(aminocarbonyl)amino]-4-(methylthio)butanoamide

Conditions
ConditionsYield
With ammonium carbonate In methanol at 80℃; for 1.5h;A 85%
B 12%
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2-hydroxy-4-(methylthio)butyronitrile

A

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hydantoin amide

B

13253-44-6

5-[2-(methylthio)ethyl]imidazolidine-2,4-dione

Conditions
ConditionsYield
With ammonium carbonate; ammonium bicarbonate In water at 105℃; for 0.583333h; Reagent/catalyst; Autoclave;A 17.9%
B 74.9%
Reaxys ID: 12045731

Reaxys ID: 12045731

A

13253-44-6

5-[2-(methylthio)ethyl]imidazolidine-2,4-dione

B

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DL-methionine

C

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DL-methionine amide

Conditions
ConditionsYield
Stage #1: With carbon dioxide In water at 60℃; under 112511 Torr;
Stage #2: With ammonia In water at 250℃;
Stage #3: titanium(IV) oxide at 180℃;		A n/a
B 63%
C n/a
...Expand
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DL-methionine

sodium cyanate

sodium cyanate

13253-44-6

5-[2-(methylthio)ethyl]imidazolidine-2,4-dione

Conditions
ConditionsYield
With hydrogenchloride
17773-41-0

2-hydroxy-4-(methylthio)butyronitrile

506-87-6

ammonium carbonate

13253-44-6

5-[2-(methylthio)ethyl]imidazolidine-2,4-dione

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hydrogen cyanide

3268-49-3

3-(methylsulfenyl)propanal

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carbon dioxide

13253-44-6

5-[2-(methylthio)ethyl]imidazolidine-2,4-dione

Conditions
ConditionsYield
With ammonia; water at 105 - 130℃; Industrial scale;
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hydrogen cyanide

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3-(methylsulfenyl)propanal

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ammonium carbonate

13253-44-6

5-[2-(methylthio)ethyl]imidazolidine-2,4-dione

Conditions
ConditionsYield
In water at 110℃; for 1h;
...Expand
74-93-1

methylthiol

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hydrogen cyanide

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carbon dioxide

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acrolein

13253-44-6

5-[2-(methylthio)ethyl]imidazolidine-2,4-dione

Conditions
ConditionsYield
With ammonia In methanol at 80℃; for 1.5h;
...Expand
Raw Materials
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Chemistry

Product Name: Methionine hydantoin (CAS NO.13253-44-6)


Molecular Formula: C6H10N2O2S
Molecular Weight: 174.22g/mol
Mol File: 13253-44-6.mol
Einecs: 236-238-9
Melting Point: 108°C
Density: 1.228 g/cm3
Surface Tension: 40.5 dyne/cm
XLogP3-AA: 0
H-Bond Donor: 2
H-Bond Acceptor: 2

Toxicity Data With Reference

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
rabbit LD50 skin > 5gm/kg (5000mg/kg)   National Technical Information Service. Vol. OTS0545910,
rat LDLo oral 5gm/kg (5000mg/kg) SENSE ORGANS AND SPECIAL SENSES: PTOSIS: EYE

BEHAVIORAL: SOMNOLENCE (GENERAL DEPRESSED ACTIVITY)

BEHAVIORAL: ATAXIA		 National Technical Information Service. Vol. OTS0545910,

Safety Profile

Low toxicity by ingestion and skin contact. When heated to decomposition it emits toxic vapors of NOx and SOx.
Safety Information of Methionine hydantoin (CAS NO.13253-44-6):
Safety Statements: 22-24/25
22:  Do not breathe dust
24:  Avoid contact with skin 
25:  Avoid contact with eyes

Specification

 Methionine hydantoin ,its CAS NO. is 13253-44-6,the synonyms is 5-(2-(Methylthio)ethyl)-4-imidazolidinedione ; 5-(2-(Methylthio)ethyl)-hydantoi ; 5-(Beta-(methylthio)ethyl)hydantoin ; 5-(Beta-methylmercaptoethyl)hydantoin ; 5-[2-(Methylthio)ethyl]-4-imidazolidinedione ; Cp93520 ; Dl-5-(2-(methylthio)ethyl)hydantoin .