520-55-8 Usage
Description
This alkaloid from Ravenia spectabilis (Syn. Lemonia spectabilis) crystallizes as
the monohydrate, m.p. 98~9°C. The base is slightly 1aevorotatory with [α]D ~
5.9° (CHC13) and gives a crystalline picrate, m.p. 198°C (dec.). The structure
has been derived from spectroscopic data, particularly the fragmentation pattern
of the mass spectrum.
References
Talapatra et al., Tetrahedron Lett., 4789 (1969)
Check Digit Verification of cas no
The CAS Registry Mumber 520-55-8 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 5,2 and 0 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 520-55:
(5*5)+(4*2)+(3*0)+(2*5)+(1*5)=48
48 % 10 = 8
So 520-55-8 is a valid CAS Registry Number.
InChI:InChI=1/C18H25NO7/c1-10-15(21)25-13-6-8-19-7-5-12(14(13)19)9-24-16(22)17(3,23)18(10,4)26-11(2)20/h5,10,13-14,23H,6-9H2,1-4H3/t10-,13+,14+,17-,18+/m0/s1