Tetrahedron has developed new synthetic processes allowing the industrial production of the following known compounds:

Tetrahedron has also designed new and proprietary antioxidants, which are selenoorganic compounds:
  • The basic structure is NutraSelen® (THD-177) which is a novel organic source of selenium, in particular through its ability to be bioconverted into L-selenomethionine, the natural source of selenium in human and animals.

A licensing agreement was signed to use NutraSelen® in Animal Nutrition.

Tetrahedron is a supplier of NutraSelen® (see below) as well as of L-(+)-ergothioneine and L-2-thiohistidine, which can be ordered on line (see below) according to our General Conditions of Sale ("Conditions générales de vente"). For request of quotation on larger quantities, please contact us.

Product CAS RN
Molecular formula
Molecular weight (g/mol)
Purity* To order**
(*) by 1H-NMR
(**) DDU
NutraSelen® 873660-49-2
C5H10O3Se
197.1
≥98% on request
L-Ergothioneine 497-30-3
C9H15N3O2S
229.3
≥98%
Package
semi-bulk on request
L-2-Thiohistidine 2002-22-4
C6H9N3O2S
187.2
≥97%
Package
semi-bulk on request

For academics, free 100-mg samples of L-2-thiohistidine and NutraSelen® are available upon request.

Tetrahedron is also a supplier of the following series of 2-thioimidazole compounds, which can be ordered on line (see below) according to our General Conditions of Sale ("Conditions générales de vente"):
Product CAS RN
Molecular formula
Molecular weight (g/mol)
Purity* To order**
(*) by 1H-NMR
(**) DDU
D-2-Thiohistidine -
C6H9N3O2S
187.2
≥97%
Package
D,L-2-Thiohistidine 13552-61-9
C6H9N3O2S
187.2
≥97%
Package
α-N-Methyl-
L-2-thiohistidine
-
C7H11N3O2S
201.2
≥98%
Package
α-N,N-Dimethyl-
L-2-thiohistidine
170227-63-1
C8H13N3O2S
215.2
≥98%
Package