6-FLUORO-DL-TRYPTOPHAN Property

Melting point:

280-285 °C (dec.)(lit.)

Boiling point:

450.7±45.0 °C(Predicted)

Density 

1.2556 (estimate)

storage temp. 

Keep in dark place,Inert atmosphere,Store in freezer, under -20°C

solubility 

Aqueous Base (Slightly), Methanol (Slightly, Heated), Water (Slightly)

pka

2.22±0.10(Predicted)

form 

crystalline

color 

Almost white to beige

CAS DataBase Reference

7730-20-3(CAS DataBase Reference)

Safety

Hazard Codes 

T

Safety Statements 

24/25

WGK Germany 

3

RTECS 

YN6850000

Hazard Note 

Toxic

HS Code 

29339900

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Warning

Hazard statements

H315Causes skin irritation

H319Causes serious eye irritation

H335May cause respiratory irritation

Precautionary statements

P261Avoid breathing dust/fume/gas/mist/vapours/spray.

P271Use only outdoors or in a well-ventilated area.

P280Wear protective gloves/protective clothing/eye protection/face protection.

6-FLUORO-DL-TRYPTOPHAN Chemical Properties,Usage,Production

Chemical Properties

almost white to beige powder

Definition

ChEBI: 6-Fluoro-DL-tryptophan is an indolyl carboxylic acid.

Biological Activity

6-fluoro-dl-tryptophan is a serotonin (5-ht) synthesis inhibitor.serotonin or 5-hydroxytryptamine (5-ht), a monoamine neurotransmitter, is biochemically derived from tryptophan. serotonin is primarily present in the gastrointestinal tract, blood platelets, and the central nervous system of animals. serotonin is considered to be a contributor to feelings of well-being and happiness.

in vitro

the potential competition was investigated between l-tryptophan (trp) and 6-fluoro-dl-tryptophan (6-f-trp). in equilibrium dialysis experiments, albumin bound about 80% of trp and 50% of 6-f-trp. competitive inhibition was assessed as the decrease in the apparent ka of trp in the presence of 6-f-trp, with no modification of the n value [1].

in vivo

rats werer administered 6-fluoro-dl-tryptophan (6f-trp) and its neurochemical effects on central catechole and indole were evaluated. results showed that neither norepinephrine nor dopamine and its major metabolites were affected by 6f-trp. with regard to serotonin (5-ht), 6f-trp could induce a transient depletion in all the studied brain areas, with a maximum of about 60-65% obtained between 1 and 3 hr. after 6 hr, 5-ht levels returned to control values. in addition, the 5-hydroxyindolacetic acid (5-hiaa) level was also reduced 3 hr after 6f-trp administration. a large dose-dependent increase in tryptophan was seen in the four brain areas, mainly due to an inhibition of tryptophan incorporation into protein, as demonstrated by experiments with mouse neuroblastoma cells [2].

References

[1] chanut, e. ,zini, r.,trouvin, j.h., et al. albumin binding and brain uptake of 6-fluoro-dl-tryptophan: competition with l-tryptophan. biochemical pharmacology 44(10), 2082-2085 (1992).
[2] chanut, e. ,trouvin, j.h.,bondoux, d., et al. metabolism of 6-fluoro-dl-tryptophan and its specific effects on the rat brain serotoninergic pathway. biochemical pharmacology 45(5), 1049-1057 (1992).