1504  Alkaloids  from  Remijia  Purdieana.  {"^""Apririsss™" 
strongly  dextrorotaiy  =  about  100°).  Dissolved  in  sulphuric 
acid  containing  raolybdic  acid,  the  solution  at  first  colorless  becomes 
after  a  time  an  intense  dark  green.  The  hydrochloride,  CaaHggNgO^, 
HCl  +  H2O,  crystallizes  in  colorless  needles,  sparingly  soluble  in  boil- 
ing water  and  alcohol,  insoluble  in  dilute  hydrochloric  acid.  The 
jplatinochloride  (C22H2gN204)2,H2PtClg  +  2H2O,  forms  yellow  needles 
insoluble  in  water  and  alcohol.  The  normal  sulphate  (C22H2gN20j2, 
H2SO4  +  8II2O,  forms  concentric  groups  of  colorless  needles,  sparingly 
soluble  in  cold  water  or  alcohol.  The  thiocyanate  forms  white  needles 
insoluble  in  water. 
Conchairamine  crystallizes  with  both  water  and  alcohol  of  crystal- 
lization in  thick  colorless  prisms  of  the  formula  C22H2gIS"204  +  H2O 
-j-  C2HgO,  the  compound  showing  three  melting  points,  namely,  82  to 
86°  for  the  whole  compound,  108  to  110°  after  expulsion  of  the 
alcohol,  and  about  120°  for  the  anhydrous  compound,  the  mass  resolidi- 
fying between  each  temperature.  A  small  portion  is  converted  by  the 
heating  into  amorphous  conciiairamine.  Conchairamine  is  readily 
soluble  in  hot  alcohol,  in  ether,  and  chloroform,  sparingly  soluble  in 
cold  alcohol.  Its  solution  in  97  per  cent,  alcohol  has  a  rotary  power 
[a]^  =  4-  68-4°  at  p.  =  2  and  t.  =  15°.  The  alcoholate  dissolves  in 
sulphuric  acid  containing  molybdic  acid,  giving  a  brown  coloration 
that  soon  becomes  intensely  dark  green.  With  potassium  chromate 
and  sulphuric  acid,  it  gives  a  coloration  at  first  reddish  brown,  then 
dark  green,  and  reddisii  yellow  if  boiled  with  excess.  The  hydrochlo- 
ride, C22H.gN204,HCl  +  2H2O,  crystallizes  in  colorless  plates,  readily 
soluble  in  hot  water  and  alcohol,  sparingly  soluble  in  cold  water,  nearly 
insoluble  in  ether.  The  lylatinochloride,  (C22H2gN204)2,H2PtClg  -f 
5H2O,  forms  a  dark  yellow  flocculent  precipitate.  The  hydriodide, 
C22H2gN204,HI  +  H2O,  crystallizes  in  colorless  needles,  sparingly 
soluble  in  cold  water.  The  thiocyanate  crystallizes  in  colorless  needles, 
very  sparingly  soluble  in  hot  water.  The  sulphate  (C22H2gN20j2- 
H2SO4  +  9 H2O,  crystallizes  in  long  lustrous  prisms,  soluble  in  boiling 
water.  The  nitrate  forms  satiny  plates  or  needles  very  sparingly  soluble 
in  water. 
Conchairamine  methiodid.e,  C22H26N204,MeI,  is  obtained  either  in  red 
crystals  containing  ]  mol.  H2O,  or  in  colorless  crystals  with  SHgO. 
The  chloride,  C22H2gN204,MeCl  -f  2H2O,  crystallizes  in  large  color- 
less rhombohedrons,  readily  soluble  in  w^ater  and  alcohol.    The  pla- 
