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DL-Homocysteine

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DL-Homocysteine Basic information

Product Name:
DL-Homocysteine
Synonyms:
  • DL-Homocysteine,95%
  • HOMOCYSTEINE, DL-(P)
  • DL-Homocysteine,2-Amino-4-mercaptobutyric acid
  • DL-HoMocystein
  • (+-)-homocysteine
  • Butyric acid, 2-amino-4-mercapto-, DL- (9CI)
  • (2R)-2-ammonio-4-mercaptobutanoate
  • dl-2-amino-4-mercaptobutyricacid
CAS:
454-29-5
MF:
C4H9NO2S
MW:
135.18
EINECS:
207-222-9
Product Categories:
  • Amino Acids
  • Amino Acids
Mol File:
454-29-5.mol
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DL-Homocysteine Chemical Properties

Melting point:
232-233 °C(lit.)
Boiling point:
299.7±35.0 °C(Predicted)
Density 
1.149 (estimate)
refractive index 
1.5480 (estimate)
Flash point:
>230 °F
storage temp. 
-20°C
solubility 
H2O: soluble
pka
2.22, 8.87, 10.86(at 25℃)
form 
solid
color 
White to Off-White
optical activity
[α]/D 0±1°, c = 1 in H2O
Merck 
14,4734
BRN 
1721683
Stability:
Stable. Combustible. Incompatible with strong oxidizing agents.
InChIKey
FFFHZYDWPBMWHY-UHFFFAOYSA-N
LogP
0.220 (est)
CAS DataBase Reference
454-29-5(CAS DataBase Reference)
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Safety Information

Safety Statements 
22-24/25
WGK Germany 
3
RTECS 
MT0175000
10-23
HS Code 
29309090
Toxicity
LD50 intraperitoneal in mouse: 500mg/kg

MSDS

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DL-Homocysteine Usage And Synthesis

Chemical Properties

white powder

Uses

DL-Homocysteine has been used to induce hyperhomocysteinemia in Sprague–Dawley rats. It has also been used to study the effects of hyperhomocysteinemia on atherosclerosis in apolipoprotein E-deficient mice.

Definition

ChEBI: A sulfur-containing amino acid consisting of a glycine core with a 2-mercaptoethyl side-chain.

Biochem/physiol Actions

Homocysteine is a sulfhydryl-containing amino acid, synthesized from methionine. It is a non-essential, non-proteinogenic amino acid. It is an important determinant of the methylation cycle and is present in the plasma in four forms. An abnormally high level of homocysteine leads to hyperhomocysteinemia and also promotes atherosclerosis.

Purification Methods

Purify it as for the L-isomer. [Allen & Steinmann J Am Chem Soc 74 3932 1952, and references for the L-isomer above, Beilstein 4 IV 3189.]

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