Date published: 2026-2-22

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T2R49 Activators

T2R49 Activators consists of various bitter compounds known to activate members of the T2R family of bitter taste receptors, which likely includes T2R49. These receptors are G protein-coupled receptors (GPCRs) that play a crucial role in the detection of bitter-tasting compounds. The activation of these receptors is key in the perception of bitterness, an important mechanism for the avoidance of harmful substances.

Compounds like Phenylthiocarbamide (PTC) and Propylthiouracil (PROP) are well-known for their ability to activate bitter taste receptors and are often used in genetic studies related to taste perception. Quinine, a classic bitter compound found in tonic water, and Denatonium, recognized as one of the most bitter substances, are likely activators of T2R49. Similarly, naturally occurring bitter compounds such as Aloin, Caffeine, and Absinthin are activators of T2R49 due to their inherent bitterness.

SEE ALSO...

Product NameCAS #Catalog #QUANTITYPriceCitationsRATING

N-Phenylthiourea

103-85-5sc-236086
100 g
$319.00
(0)

PTC is a well-known compound that activates certain bitter taste receptors, potentially including T2R49.

Quinine

130-95-0sc-212616
sc-212616A
sc-212616B
sc-212616C
sc-212616D
1 g
5 g
10 g
25 g
50 g
$79.00
$104.00
$166.00
$354.00
$572.00
1
(0)

Quinine, a compound found in tonic water, is a classic bitter compound that may activate T2R49.

Denatonium benzoate

3734-33-6sc-234525
sc-234525A
sc-234525B
sc-234525C
sc-234525D
1 g
5 g
25 g
100 g
250 g
$32.00
$47.00
$141.00
$473.00
$921.00
(1)

Denatonium is one of the most bitter substances known and may interact with T2R49.

6-Propyl-2-thiouracil

51-52-5sc-214383
sc-214383A
sc-214383B
sc-214383C
10 g
25 g
100 g
1 kg
$37.00
$56.00
$224.00
$1997.00
(0)

PROP is structurally similar to PTC and known to activate bitter taste receptors.

Aloin

1415-73-2sc-214525
sc-214525A
25 mg
100 mg
$159.00
$271.00
1
(1)

Aloin, a compound in aloe, is bitter and may activate bitter taste receptors like T2R49.

Caffeine

58-08-2sc-202514
sc-202514A
sc-202514B
sc-202514C
sc-202514D
50 g
100 g
250 g
1 kg
5 kg
$33.00
$67.00
$97.00
$192.00
$775.00
13
(1)

Caffeine, a bitter compound in coffee and tea, may interact with T2R49.

Saccharin

81-07-2sc-212902
sc-212902A
sc-212902B
100 mg
1 g
10 g
$173.00
$235.00
$286.00
(0)

Saccharin is an artificial sweetener with a bitter aftertaste that may activate T2R49.

D-(−)-Salicin

138-52-3sc-218004
5 g
$59.00
(0)

Salicin, a bitter compound in willow bark, might activate T2R49.

Naringin

10236-47-2sc-203443
sc-203443A
25 g
50 g
$45.00
$101.00
7
(1)

Naringin, a bitter flavonoid in grapefruits, may activate T2R49.