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

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

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

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 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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