L(-)-Tryptophan

Modify Date: 2024-01-01 17:36:38

L(-)-Tryptophan Structure
L(-)-Tryptophan structure
Common Name L(-)-Tryptophan
CAS Number 73-22-3 Molecular Weight 204.23
Density 1.4±0.1 g/cm3 Boiling Point 447.9±35.0 °C at 760 mmHg
Molecular Formula C11H12N2O2 Melting Point 289-290 °C (dec.)(lit.)
MSDS Chinese USA Flash Point 224.7±25.9 °C

 Use of L(-)-Tryptophan


L-Tryptophan (Tryptophan) is an essential amino acid that is the precursor of serotonin, melatonin, and vitamin B3[1].

 Names

Name L-tryptophan
Synonym More Synonyms

 L(-)-Tryptophan Biological Activity

Description L-Tryptophan (Tryptophan) is an essential amino acid that is the precursor of serotonin, melatonin, and vitamin B3[1].
Related Catalog
Target

Human Endogenous Metabolite

References

[1]. Slominski A, et al. Conversion of L-tryptophan to serotonin and melatonin in human melanoma cells. FEBS Lett. 2002 Jan 30;511(1-3):102-6.

 Chemical & Physical Properties

Density 1.4±0.1 g/cm3
Boiling Point 447.9±35.0 °C at 760 mmHg
Melting Point 289-290 °C (dec.)(lit.)
Molecular Formula C11H12N2O2
Molecular Weight 204.23
Flash Point 224.7±25.9 °C
Exact Mass 204.089874
PSA 79.11000
LogP 1.04
Vapour Pressure 0.0±1.1 mmHg at 25°C
Index of Refraction 1.698

 Toxicological Information

CHEMICAL IDENTIFICATION

RTECS NUMBER :
YN6130000
CHEMICAL NAME :
Tryptophan, L-
CAS REGISTRY NUMBER :
73-22-3
LAST UPDATED :
199701
DATA ITEMS CITED :
29
MOLECULAR FORMULA :
C11-H12-N2-O2
MOLECULAR WEIGHT :
204.25
WISWESSER LINE NOTATION :
T56 BMJ D1YZVQ -L

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Human - woman
DOSE/DURATION :
10960 mg/kg/20W-I
TOXIC EFFECTS :
Behavioral - muscle weakness Lungs, Thorax, or Respiration - chronic pulmonary edema Blood - eosinophilia
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Human - woman
DOSE/DURATION :
2700 mg/kg/13W-I
TOXIC EFFECTS :
Lungs, Thorax, or Respiration - structural or functional change in trachea or bronchi Lungs, Thorax, or Respiration - acute pulmonary edema Blood - eosinophilia
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Human - woman
DOSE/DURATION :
3276 mg/kg/9W-I
TOXIC EFFECTS :
Behavioral - muscle weakness Blood - eosinophilia Skin and Appendages - dermatitis, other (after systemic exposure)
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Human - woman
DOSE/DURATION :
9 gm/kg/22W-I
TOXIC EFFECTS :
Behavioral - muscle weakness Liver - liver function tests impaired Blood - eosinophilia
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Human - man
DOSE/DURATION :
300 mg/kg
TOXIC EFFECTS :
Behavioral - excitement Behavioral - antianxiety
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Human - man
DOSE/DURATION :
857 mg/kg/30D-I
TOXIC EFFECTS :
Blood - eosinophilia Musculoskeletal - other changes Skin and Appendages - other glands
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Human - woman
DOSE/DURATION :
4800 mg/kg/34W-I
TOXIC EFFECTS :
Peripheral Nerve and Sensation - paresthesis Blood - eosinophilia Skin and Appendages - other glands
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Human - woman
DOSE/DURATION :
5400 mg/kg/134W-I
TOXIC EFFECTS :
Blood - eosinophilia Skin and Appendages - other glands
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
>16 gm/kg
TOXIC EFFECTS :
Sense Organs and Special Senses (Eye) - ptosis Behavioral - coma Nutritional and Gross Metabolic - body temperature decrease
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Intraperitoneal
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
1634 mg/kg
TOXIC EFFECTS :
Lungs, Thorax, or Respiration - dyspnea Nutritional and Gross Metabolic - body temperature decrease
TYPE OF TEST :
LDLo - Lowest published lethal dose
ROUTE OF EXPOSURE :
Unreported
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
2553 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
TYPE OF TEST :
LDLo - Lowest published lethal dose
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Rodent - mouse
DOSE/DURATION :
15 gm/kg
TOXIC EFFECTS :
Sense Organs and Special Senses (Eye) - ptosis Lungs, Thorax, or Respiration - cyanosis Nutritional and Gross Metabolic - body temperature decrease
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Intraperitoneal
SPECIES OBSERVED :
Rodent - mouse
DOSE/DURATION :
4800 mg/kg
TOXIC EFFECTS :
Behavioral - somnolence (general depressed activity) Lungs, Thorax, or Respiration - cyanosis Nutritional and Gross Metabolic - body temperature decrease
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Intraperitoneal
SPECIES OBSERVED :
Bird - domestic
DOSE/DURATION :
2410 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Intraperitoneal
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
72 gm/kg/30D-C
TOXIC EFFECTS :
Liver - changes in liver weight Kidney, Ureter, Bladder - urine volume increased Biochemical - Enzyme inhibition, induction, or change in blood or tissue levels - transaminases
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Intravenous
SPECIES OBSERVED :
Rodent - rabbit
DOSE/DURATION :
30 gm/kg/30D-I
TOXIC EFFECTS :
Blood - changes in erythrocyte (RBC) count Nutritional and Gross Metabolic - weight loss or decreased weight gain Related to Chronic Data - changes in testicular weight
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Subcutaneous
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
9500 mg/kg/2Y-C
TOXIC EFFECTS :
Tumorigenic - equivocal tumorigenic agent by RTECS criteria Reproductive - Tumorigenic effects - uterine tumors
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Implant
SPECIES OBSERVED :
Rodent - mouse
DOSE/DURATION :
80 mg/kg
TOXIC EFFECTS :
Tumorigenic - equivocal tumorigenic agent by RTECS criteria Kidney, Ureter, Bladder - tumors
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Oral
DOSE :
200 mg/kg
SEX/DURATION :
female 18 day(s) after conception
TOXIC EFFECTS :
Reproductive - Effects on Embryo or Fetus - maternal-fetal exchange
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Subcutaneous
DOSE :
900 mg/kg
SEX/DURATION :
female 3 day(s) pre-mating
TOXIC EFFECTS :
Reproductive - Maternal Effects - ovaries, fallopian tubes

MUTATION DATA

TYPE OF TEST :
DNA inhibition
TEST SYSTEM :
Rodent - rat Liver
DOSE/DURATION :
100 umol/L
REFERENCE :
CNREA8 Cancer Research. (Public Ledger Building, Suit 816, 6th & Chestnut Sts., Philadelphia, PA 19106) V.1- 1941- Volume(issue)/page/year: 45,337,1985 *** REVIEWS *** TOXICOLOGY REVIEW BLFSBY Basic Life Sciences. (Plenum Pub. Corp., 223 Spring St., New York, NY 10003) V.1- 1973- Volume(issue)/page/year: 24,253,1983 *** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA *** NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA : NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - X3075 No. of Facilities: 1257 (estimated) No. of Industries: 6 No. of Occupations: 19 No. of Employees: 24809 (estimated) No. of Female Employees: 18622 (estimated)

 Safety Information

Personal Protective Equipment Eyeshields;Gloves;type N95 (US);type P1 (EN143) respirator filter
Hazard Codes F
Risk Phrases 33-40-62-41-37/38-36/37/38-22
Safety Phrases 24/25-36/37/39-36-26
RIDADR NONH for all modes of transport
WGK Germany 2
RTECS YN6130000
HS Code 2933990090

 Synthetic Route

 Customs

HS Code 2933990090
Summary 2933990090. heterocyclic compounds with nitrogen hetero-atom(s) only. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

 Articles314

More Articles
High-throughput fluorescence-based screening assays for tryptophan-catabolizing enzymes.

J. Biomol. Screen. 19(9) , 1266-74, (2014)

Indoleamine 2,3-dioxygenase (IDO1) and tryptophan 2,3-dioxygenase (TDO) are two structurally different enzymes that have a different tissue distribution and physiological roles, but both catalyze the ...

Improved characterization of EV preparations based on protein to lipid ratio and lipid properties.

PLoS ONE 10(3) , e0121184, (2015)

In recent years the study of extracellular vesicles has gathered much scientific and clinical interest. As the field is expanding, it is becoming clear that better methods for characterization and qua...

Development of High-purity Certified Reference Materials for 17 Proteinogenic Amino Acids by Traceable Titration Methods.

Anal. Sci. 31 , 805-14, (2015)

To ensure the reliability of amino acid analyses, the National Metrology Institute of Japan of the National Institute of Advanced Industrial Science and Technology (NMIJ/AIST) has developed high-purit...

 Synonyms

MFCD00064340
EINECS 200-795-6
8,11-Dichloro-5H-dibenzo[b,e][1,4]diazepine
L(-)-Tryptophan
H-Trp-OH
Tadalafil Impurity 2
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