Colorimetric Assay of Caffeine in Crude Drugs and in Pharmaceutical Preparations

References

• Daoust , R. A. 1953 . J. Amer. Pharm. Ass. Sci. Ed. , 42 ( 12 ) : 744 – 764 .
   Google Scholar
• Jayaramen , K. S , Ramannjam , S. and Vijay araghavan , P. K. 1962 . Current Sci. , 13 : 282 – 233 . Indian J. Technol., 3, 337–338 (1965)
   Google Scholar
• Cook , C. E. , Tallent , C. T. , Amerson , E. W. , Myers , M. W. , Kepler , J. A. , Taylor , G. F. and Christensen , H. D. 1976 . J. Pharmacol. Exp. Ther. , 199 : 679 686
   PubMed Web of Science ®Google Scholar
• Clarke , E. G. C. 1978 . “Isolation and Identification of Drugs in Pharmaceuticals, Body Fluids and Post Morten Materials” , 234 – 235 . London : The Pharmaceutical Press .
   Google Scholar
• Bensussan , I. J. 1946 . L'opium—paris: Vigot Freres thru. Hanson, A. and Lindgren, J.F.; Arch. Toxicol. 31, 1–6 (1973).
   Google Scholar
• Hangon , A. and Liadgren , J. P. 1973 . Arch. Toxicol. , 31 : 1 – 6 .
   Web of Science ®Google Scholar
• Handritschk , Schwarz . Ger (Fast) Pat., 17, 589 . 1959 . Thru. Chem. Abst., 55, 3630a (1961)
   Google Scholar
• Sengupta , P. , Mondal , A. , Sen , A. R. and Roy , B. R. 1975 . Int. Flavours Fd. Additives , 6 ( 6 ) : 340 347 thru. Anal. Abs. 30 (5), 5F46 (1976)
   Google Scholar