CAS 102518-79-6 | (-)-Huperzine A
Molecular Formula: C15H18N2O
Molecular Weight: 242.32
EINECS: 600-320-6
Purity: 97% Min.
Package: 1 g / 5 g / 25 g / 100 g / 1 kg / 25 kg
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Product Introduction
Specification of CAS 102518-79-6 | (-)-Huperzine A
ITEMS | SPECIFICATION |
Melting point | 211-216 C |
alpha | D -147° (c = 0.36 in CH3OH) (Ayer); D24.5 -150.4° (c = 0.498 in MeOH) (Liu) |
Storage temp. | Keep in dark place,Inert atmosphere,2-8°C |
Form | neat |
Density | 1.20 g/cm3 |
Boiling point | 505.0 °C |
pka | 12.25 |
optical activity | [α]/D -153±5°, c = 0.5 in methanol |
CAS DataBase Reference | 102518-79-6(CAS DataBase Reference) |
Synthesis of CAS 102518-79-6 | (-)-Huperzine A
Conditions
Stage #1: methyl ((5S,E)-11-ethylidene-2-methoxy-7-methyl-5,6,9,10-tetrahydro-5,9-methanocycloocta[b]pyridin-5-yl)carbamate With trimethylsilyl iodide In chloroform for 6h; Reflux; Inert atmosphere;
Stage #2: With methanol In chloroform for 3h; Reflux; Inert atmosphere;
Reference
Koshiba, Takahiro; Yokoshima, Satoshi; Fukuyama, Tohru
[Organic Letters, 2009, vol. 11, # 22, p. 5354 - 5356]
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