The product is from Chinese herbal medicine, and SheZu haperziaceae name qianceng tower grass, basically originate in hunan, zhejiang, guangxi, yunnan area, the separation from natural products get huperzine a is a kind of cholinesterase the reversible inhibitor, high selectivity, low toxicity and efficacy of time is long, etc, is by far the treatment of senile dementia international ideal drug candidates. Used for myasthenia gravis, senile memory loss and alzheimer's, youth learning disabilities and memory enhancement.

Specification: 1%，5%，99%（HPLC）

Plants Huperziaceae plant source: clubmosses families SheZu Huperzia serrata (Thunb. Haperziaceae Trev. All the grass.)

English name: Huperzine A

Different name: f set alkali, double Fordin, Selagine PE flat,

Chemical name: 5,9 - Methanocycloocta [b] pyridine - 2 (1H) a-one, 5 - amino - 11 - ethylid - 5,6,9,10 - tetrahydro empresa nacional DE electricidade (ene) - methyl -, 7 - [regular - (5 alpha, beta, 9]] - 11E)

Molecular formula and molecular weight: C15H18N2O; 242.32

Chemical classification: alkaloids alkaloid

Physical character: crystal, mp 229 ~ 230 ℃

CAS: 102518 -9-6