All Photos(1)




Metabolic Pathways, 22nd Ed.

Chart, 12.5 × 19 in.

Sign Into View Organizational & Contract Pricing

publication info

D.E. Nicholson, Sigma Chemical Co., St. Louis, MO, 2003

Looking for similar products? Visit Product Comparison Guide

General description

This 22nd edition of the IUBMB-Nicholson Metabolic Pathways Chart features an enhanced ATP metabolism in mitochondria and chloroplasts. It illustrates the sequences of reactions involved in different aspects of metabolism and how they are integrated. The backbone of the map is the Glycolytic Pathway, followed by the TCA (Krebs) Cycle and the ElectronTransport System, which together produce most of the energy (ATP) required for all life. Most other aspects of metabolism are associated with this backbone and are differentiated by the use of color. Human metabolism is distinguished by the use of black arrows. Some 550 reactions are identified by their IUBMB Enzyme Commission (EC) numbers which are then indexed.

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

Already Own This Product?

Documents related to the products that you have purchased in the past have been gathered in the Document Library for your convenience.

Visit the Document Library

Difficulty Finding Your Product Or Lot/Batch Number?

Product numbers are combined with Pack Sizes/Quantity when displayed on the website (example: T1503-25G). Please make sure you enter ONLY the product number in the Product Number field (example: T1503).


Product Number
Pack Size/Quantity

Additional examples:





enter as 1.000309185)

Having trouble? Feel free to contact Technical Service for assistance.

Lot and Batch Numbers can be found on a product's label following the words 'Lot' or 'Batch'.

Aldrich Products

  • For a lot number such as TO09019TO, enter it as 09019TO (without the first two letters 'TO').

  • For a lot number with a filling-code such as 05427ES-021, enter it as 05427ES (without the filling-code '-021').

  • For a lot number with a filling-code such as STBB0728K9, enter it as STBB0728 without the filling-code 'K9'.

Not Finding What You Are Looking For?

In some cases, a COA may not be available online. If your search was unable to find the COA you can request one.

Request COA

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service