NIST tory personnel who have just started using HPLC. Eleven quiz questions with expla nations of both correct and incorrect an swers have been included to extend the training aspect of the program. Experi enced HPLC users will probably find little or no new material in the package but could benefit from the expert system or text to refresh their knowledge. The pro gram makes efficient use of the various hypertext concepts and facilitates cross referencing among related topics. Reviewed byjoost K. Strasters, Sterling Winthrop Pharmaceuticals, Collegeville, PA
QUALITY MEASURMENTS = STANDARD REFERENCE MATERIALS
UNITED STATES DEPARTMENT OF COMMERCE NATIONAL INSTITUTE OF STANDARDS AND TECHNOLOGY
The National Institute of Standards and Technology has developed a series of SRM's to serve as calibrants, test mixtures, and standardization materials for Quality Control of analytical instrumentation and methodology. MEASUREMENTS and STANDARDS are important to everyone who needs quality. NIST has over 1,000 Standard Reference Materials that can help you calibrate instruments and check on measurement accuracy. For more information phone or write for a free catalog.
SOFTWARE RELEASED Design-Expert
Telephone (301) 975-OSRM (6776) FAX (301) 948-3730
Stat-Ease Hennepin Square, Suite 191 2021 E. Hennepin Ave. Minneapolis, MN 55413-2723 800-325-9829; 612-378-9449 Version 4; $795 Design-Expert is designed to aid indus trial chemists in optimizing their process or formulation steps. Experiments can be statistically designed and organized; the validity of experimental results can also be determined statistically. Rotable 3D plots are provided to allow the visualiza tion of response surfaces. Interactive 2D graphics allow users to explore the con tours with a mouse, clicking to set flags that display coordinates and predicted response. Designs can be customized us ing 10 process variables and 24 mixture components. The program runs on IBM PCs and compatibles with a 286 or higher processor. It requires VGA graphics, 2 MB hard disk space, and 640 Κ conventional memory.
Carbon-13 NMR Module SoftShell International 715 Horizon Dr., Suite 390 Grand Junction, CO 81506-8727 303-242-7502; 303-242-6469 (fax) $99 Designed to be used in conjunction with v. 3 of Chemlntosh or ChemWindow structure drawing software, the Carbon-13 NMR Module allows one to predict car bon shifts. Once a structure is drawn, the software provides the NMR shifts and draws them next to their respective car bons. The shifts are calculated using stan dard algorithms; the order of the peaks matches the order of the actual results.
STANDARD REFERENCE MATERIAL PROGRAM Building 202, Room 204 National Institute of Standards and Technology Gaithersburg, MD. 20899 CIRCLE 11 ON READER SERVICE CARD
The Journal of Organic Chemistry
solicits manuscripts that address topics at the interface of organic chemistry and biology.
W
hile such manuscripts should address fundamental problems in organic chemistry (structure, mechanism, synthesis), we encourage submission of manuscripts in which these problems are solved with the use of techniques not traditionally associated with organic chemistry (enzyme kinetics, enzyme isolation and purification, identification of active site residues, etc.). The Journal hopes to foster integrated publications in which the chemical aspects are not separated from the biological aspects. For manuscript format, see J. Org Chem, 1990, 55 (1), 7A-10A. Send manuscripts to: C. H. Heathcock, Editor-in-Chief, The Journal of Organic Chemistry, Department of Chemistry, University of California, Berkeley, CA 94720 For subscription information American Chemical Society Sales and Distribution 1155 Sixteenth Street, N.W., Washington, D.C. 20036 (202) 872-4363 Toll Free, 1-800-227-5558 Analytical Chemistry, Vol. 66, No. 8, April 15, 1994 471 A
