Version 2.85 of Molecular Weight Calculator for Dos now available.

      New Features:  Now recognizes the MWTPATH environment variable for 
                       specification of the location of the program's
                       data files.

    Why is it better than other programs available?  First of all it's
free, yet fully functional.  I feel it is very powerful, more functional
and more user friendly than other molecular weight programs I've
found over the net.  I like it so much that I'm making it available
for others so that they can use it in their research and studies.  Plus, the
program is fully Windows compatible.  Note that a windows version is
also available.


AVAILABILITY
------------------------------------------------------------------------------
   Dos Version (MWT v2.85)

The program is available via the web at http://plains.uwyo.edu/~monroem/ or at
http://www.coast.net/SimTel/msdos/chemstry.html and
http://www.cdrom.com/simtel.net/msdos/chemstry.html

The program is also available via Anonymous FTP at ftp.coast.net under the
SimTel/msdos/chemstry directory in the mwt2_85.zip file, at ftp.simtel.net
under pub/simtelnet/msdos/chemstry in the mwt2_85.zip file, and ftp.ccl.net
under the pub/chemistry/software/MS-DOS/Molecular-Weight-Calculator directory
in the mwt2_85.exe file.

    Windows Version (MWT Win v3.1)

The program is available via the web at http://plains.uwyo.edu/~monroem/ or at
http://www.coast.net/SimTel/win3/chem.html and
http://www.cdrom.com/simtel.net/win3/chem.html under the file mwt3_1.zip

The program is also available via Anonymous FTP at ftp.coast.net under the
SimTel/win3/chem directory in the mwt3_1.zip file, at ftp.simtel.net under
pub/simtelnet/win3/chem in the mwt3_1.zip file, and ftp.ccl.net (around
August 1, 1996) under the pub/chemistry/software/MS-WINDOWS/ directory in 
the mwt3_1.exe file.


    As a final option, I can mail you a UUEncoded or MIME encoded version 
via e-mail; just drop me a line.


Please see my home page for the Windows version features.

As for the Dos version, ...


FEATURES
-----------------------------------------------------------------------------
Multi Line Display	Display of up to seven formulas with their molecular
weights simultaneously.

Percent Composition	Percent composition of up to seven formulas.

Parentheses Are Allowed	Handles up to 4 layers of embedded parentheses.

For example, (CH3)3CH2CH3 is equivalent to CH3CH3CH3CH2CH3.

Hydrates or other appended compounds are allowed.

For example, FeCl3-6H2O.

User-definable abbreviations	Default abbreviations are included for common
parts of compounds, including amino acids.  See full list.

For example, PhCl = C6H5Cl and HOac = CH3COOH.

Smart Case Conversion	The program will automatically convert lowercase
letters to uppercase where appropriate for ease of entering a formula.  Exact
case matching and non-conversion are also available.

Up to 150 user-defined abbreviations can be added.

Isotopes are recognized using the following notation:

^13C is Carbon-13
	C6H5^18OH is heavy-oxygen (Oxygen-18) labeled phenol

Feature of weighting parts of a compound relative to the other parts.

For example,

[.2Na]Cl would have a weight of 0.2*22.989768+35.4527=40.0507
NaCl-[.5H2O] would have a weight of
22.989768+35.4527+0.5*(2*1.00794+15.9994)=67.4501

Percent Solver mode for finding the value of "x" in a compound that satisfies
user-specified percent composition requirements.

Accuracy of the final digit of the molecular wt. and percent composition.

Capability to set optional features at the command line when starting the
program.

Capability of printing results.

Extensive On-Line Help and Error Checking


THE AUTHOR
------------------------------------------------------------------------------
Contacting the Author

You can contact me by E-mail at Monroem@UWyo.Edu until I graduate in May 1997. 
After that, E-mail BPat@UWyo.Edu for information on my whereabouts.

About the Author

I am an undergraduate chemistry major at the University of Wyoming in Laramie,
Wyoming.  I plan to attend graduate school and aim to obtain a doctorate in
chemistry.  I taught myself to program in BASIC on an Apple //c (with 128 Kb of
Ram and no hard disk) in 1986 during 6th grade.  Since then, I have updated to
GW-Basic, then QuickBasic v4.5, QuickBasic v7.1 for DOS, and now Visual Basic
3.0 for Windows.  I am familiar with C, and, though I know it is much faster
than Basic, I stick with the various forms of Basic since I am much more
comfortable with the language.  I have also been told that Visual Basic is
easier to learn than Visual C, and, in fact, I taught myself Visual basic in
two days.

/============================================================================\
I was goin' Chopin', but I forgot my Lizst! Had to go Bach to get it.

                                   What are the following?
Matthew Monroe               Black Angus            :      Black Angus
Chemistry Major              Black Angus            :      Texas Longhorn
University of Wyoming        Black Angus            :      Brown Swiss
                             -------------------------------------------------
monroem@uwyo.edu             Homogeneous Catalyst   :   Heterogeneous Catalyst

/----------------------------------\
| http://plains.uwyo.edu/~monroem/ |           This tagline is umop apisdn.
\============================================================================/