NORDIHYDROGUAIARETIC ACID
Prepared at the 17th JECFA (1973), published in FNP 4 (1978) and in FNP 52 (1992). Metals and arsenic specifications revised at the 63rd JECFA (2004). No ADI was allocated at the 17th JECFA (1973)
SYNONYMS NDGA
DEFINITION
Chemical names
4,4'-(2,3-Dimethyltetramethylene)-dipyro-catechol; 1,4-dipyro-catechol-2,3-dimethyl-butane; nordihydroguaiaretic acid; ß,gamma -dimethyl-alpha,delta-bis(3,4-dihydroxyphenyl) butane
C.A.S. number 500-38-9
Chemical formula C18H22O4
Formula weight 302.36
Assay Not less than 95% and not more than 102%
DESCRIPTION White to greyish-white crystalline solid and may be prepared from the
evergreen desert shrub, Larrea divaricata, (Fam. Zygophyllaceae)
FUNCTIONAL USESAntioxidant
