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72-19-5

72-19-5 structure
72-19-5 structure
  • Name: L-Threonine
  • Chemical Name: L-threonine
  • CAS Number: 72-19-5
  • Molecular Formula: C4H9NO3
  • Molecular Weight: 119.119
  • Catalog: Biochemical Common amino acids and protein drugs
  • Create Date: 2018-02-03 08:00:00
  • Modify Date: 2025-08-21 08:36:01
  • L-Threonine is a natural amino acid, can be produced by microbial fermentation, and is used in food, medicine, or feed[1].

Name L-threonine
Synonyms EINECS 200-774-1
L-Tlhreonine
H-THR-OH
L-Threonine (JP15)
(2S,3R)-(-)-Threonine
L-α-Amino-β-hydroxybutyric acid
L-Threonine
2-Amino-3-hydroxybutanoic acid, (R-(R*,S*))-
UNII:TFM6DU5S6A
H-L-THR-OH
MFCD00063722
THR
(R-(R*,S*))-2-Amino-3-hydroxybutanoic acid
L-2-Amino-3-hydroxybutyric acid
Threonine
(2S,3R)-Threonine
[R-(R*,S*)]-2-Amino-3-hydroxybutanoic acid
MFCD00064270
(2S,3R)-2-Amino-3-hydroxybutyric acid
Butanoic acid, 2-amino-3-hydroxy-, (R-(R*,S*))-
QY1&YZVQ &&L or (2S,3R)- Form
(s)-threonine
l-threonin
(2S,3R)-2-Amino-3-hydroxybutanoic acid
l-Thr
Threonin
Description L-Threonine is a natural amino acid, can be produced by microbial fermentation, and is used in food, medicine, or feed[1].
Related Catalog
References

[1]. Zhao H, et al. Increasing L-threonine production in Escherichia coli by engineering the glyoxylate shunt and the L-threonine biosynthesis pathway. Appl Microbiol Biotechnol. 2018 Jul;102(13):5505-5518.

Density 1.3±0.1 g/cm3
Boiling Point 345.8±32.0 °C at 760 mmHg
Melting Point 255ºC
Molecular Formula C4H9NO3
Molecular Weight 119.119
Flash Point 162.9±25.1 °C
Exact Mass 119.058243
PSA 83.55000
LogP -1.23
Vapour Pressure 0.0±1.7 mmHg at 25°C
Index of Refraction 1.507

CHEMICAL IDENTIFICATION

RTECS NUMBER :
XO8590000
CHEMICAL NAME :
Threonine, L-
CAS REGISTRY NUMBER :
72-19-5
LAST UPDATED :
199709
DATA ITEMS CITED :
5
MOLECULAR FORMULA :
C4-H9-N-O3
MOLECULAR WEIGHT :
119.14
WISWESSER LINE NOTATION :
QY1&YZVQ -L

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Intraperitoneal
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
3098 mg/kg
TOXIC EFFECTS :
Behavioral - muscle contraction or spasticity Lungs, Thorax, or Respiration - dyspnea Nutritional and Gross Metabolic - body temperature decrease

MUTATION DATA

TYPE OF TEST :
Sister chromatid exchange
TEST SYSTEM :
Human Lymphocyte
DOSE/DURATION :
10 mg/L
REFERENCE :
MUREAV Mutation Research. (Elsevier Science Pub. B.V., POB 211, 1000 AE Amsterdam, Netherlands) V.1- 1964- Volume(issue)/page/year: 372,75,1996 *** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA *** NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA : NOHS - National Occupational Hazard Survey (1974) NOHS Hazard Code - 81868 No. of Facilities: 53 (estimated) No. of Industries: 1 No. of Occupations: 3 No. of Employees: 750 (estimated) NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - 81868 No. of Facilities: 787 (estimated) No. of Industries: 3 No. of Occupations: 13 No. of Employees: 18524 (estimated) No. of Female Employees: 13980 (estimated)
Personal Protective Equipment Eyeshields;Gloves;type N95 (US);type P1 (EN143) respirator filter
Hazard Codes Xi
Risk Phrases 36/37/38
Safety Phrases S24/25
RIDADR NONH for all modes of transport
WGK Germany 3
RTECS XO8590000
HS Code 29225000
HS Code 2922509090
Summary 2922509090. other amino-alcohol-phenols, amino-acid-phenols and other amino-compounds with oxygen function. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:30.0%
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