Many information sources now also use the CAS RN to overcome potential nomenclature confusion. Most governments have a patent office, and there are usually branches in main centres. If you are able to obtain access to the patents at the patent office, and are familiar with patent codes, or know the patent number, the cost will be lower than using a patent attorney. If you do not know how to search for patents, and your time is valuable, you will find that using a patent attorney will be very cost effective. The chemicals usually found in home chemistry sets can usually be purchased at the shop where the set was obtained, or the local hardware shop or pharmacist, provided the chemical is not subject to government or state restrictions.
Many chemicals are only available to approved purchasers.
Most national chemical societies publish an annual listing of suppliers with their journals. Smaller specialist and boutique suppliers are usually more likely to sell small quantities of chemicals to individuals. I'm not sure about the US, but here in NZ discounts can halve the price of most chemicals. If you are intending to acquire a wide range of chemicals over time, an account may be a good idea, however remember that you may then be subject to inspection visits by regulators if you purchase certain chemicals. As with chemicals, simple laboratory equipment can be purchased from the suppliers of home chemistry sets.