English name: VM; Folic acid; N-4 - [(2-Amido-4-oxo-1,4-dihydro-6-terene) methylamino] benzoyl-L-glutamic acid; Vitamin B; Vitamin B11; Vitamin BC; Vitamin M; L-Pteroylglutamic acid; PGA
Other names: folic acid; folic acid; Diechi glutamic acid; vitamin BC; N- [4- (2-anji-4-yangdai-6-dieding) jiaanjibenjiaxianji] -L- glutamic acid
C19H19N7O6 = 441.40
Heavy Metal: ≤20mg / kg
A UV absorption: Qualified
Loss on drying: ≤8.5%
Traits: yellow or orange crystalline powder or flakes without melting point of about 250 ℃ pigmentation and charring dissolved in hot dilute hydrochloric acid and sulfuric acid, slightly soluble in acid, phenol, pyridine, alkali hydroxide and alkali carbonate solution, dissolved less. ethanol and butanol, slightly soluble in methanol, very slightly soluble in cold water (25 ℃, 0.0016mG / ml), boiling water for about 1% of the soluble and insoluble in ether, acetone, chloroform and benzene. 1G folic acid in 10ml water suspension, pH 4.0 ~ 4.8 with sodium bicarbonate solution pH6.5 ~ 6.8 Preparation of the maximum absorption wavelength (pH 13):... 256283368nm (logε4.434.403.96) Specific rotation [α] 25D + 23 ° (c = 0.50.1mol / L sodium hydroxide solution).
Use: Biochemical studies.
Save: 2 ~ 8 ℃, dark, avoid contact with metal