29881-57-0 Usage
Description
The leaves and stems of Stemona japonica Miq. contain this alkaloid which is
dextrorotatory having [α]D + 273° (MeOH). The ultraviolet spectrum has only a
single absorption maximum at 296 mil in EtOIl.
References
Irie et at., Chem. Commun., 1066 (1970)
Check Digit Verification of cas no
The CAS Registry Mumber 29881-57-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,9,8,8 and 1 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 29881-57:
(7*2)+(6*9)+(5*8)+(4*8)+(3*1)+(2*5)+(1*7)=160
160 % 10 = 0
So 29881-57-0 is a valid CAS Registry Number.
29881-57-0Relevant articles and documents
Semi-syntheses of new stemofoline derivatives
Ye, Yang,Velten, Robert F.
, p. 7171 - 7173 (2007/10/03)
Semi-syntheses of several new stemofoline derivatives are described. Acidic hydrolysis of the tetronate moiety of stemofoline, followed by re-esterification gave homologues of stemofoline and isostemofoline. Hydrazinolysis resulted in new pyridazinones. O