Buy Wholesale and maintain an Active status for 2 months and we will refund your $39 Distributor Fee![]()
07-SEPTEMBER-2008 03:17:44 - CAS registry number CAS registry numbers are unique numerical identifiers for chemical compounds, polymers, biological sequences, mixtures and alloys. They are also referred to as CAS numbers, CAS RNs or CAS #s. Chemical Abstracts Service CAS, a division of the American Chemical Society, assigns these identifiers to every chemical that has been described in the literature. The intention is to make database searches more convenient, as chemicals often have many names. Almost all molecule databases today allow searching by CAS number. As of January 2008, there were 33,565,050 organic and inorganic substances and 59,584,048 sequences in the CAS registry.1 Around 50,000 new numbers are added each week. CAS also maintains and sells a database of these chemicals, known as the CAS registry. Contents 1 Format 2 Isomers, enzymes, and mixtures 3 Searches 4 See also 5 Notes 6 External links Format A CAS registry number is separated by hyphens into three parts, the first consisting of up to 7 digits, the second consisting of two digits, and the third consisting of a single digit serving as a check digit. The numbers are assigned in increasing order and do not have any inherent meaning. The checksum is calculated by taking the last digit times 1, the next digit times 2, the next digit times 3 etc., adding all these up and computing the sum modulo 10. For example, the CAS number of water is 7732-18-5: the checksum is calculated as 8×1 + 1×2 + 2×3 + 3×4 + 7×5 + 7×6 = 105; 105 mod 10 = 5. The Chemical Abstracts Service has announced on its web site that it will add an additional digit to new CAS registry numbers, starting about January 2008. Isomers, enzymes, and mixtures Different stereoisomers of a molecule receive different CAS numbers: D-glucose has 50-99-7, L-glucose has 921-60-8, α-D-glucose has 26655-34-5, etc. Occasionally, whole classes of molecules receive a single CAS number: the group of alcohol dehydrogenases has 9031-72-5. An example of a mixture with a CAS number is mustard oil 8007-40-7. Searches When using CAS numbers for database searches, it is useful to include the numbers of closely related compounds. For instance, to search for information about cocaine CAS 50-36-2, one should consider including cocaine hydrochloride CAS 53-21-4, since that is the most common form of cocaine when used as a drug. See also EC number Enzyme Commission EC# EINECS and ELINCS International Chemical Identifier InChI PubChem SMILES UN number Chemical database . Notes ^ CAS Registry Number and Substance Counts External links CAS registry description, by the Chemical Abstracts Service To find the CAS number of a compound given its name, formula or structure, the following free resources can be used: PubChem NIH ChemIDplus NIST Chemistry WebBook RD Chemicals NCI Database Browser Chemfinder ChemSub Online Multilingual chemical names European chemical Substances Information System ESIS - useful for finding EC# NIOSH Pocket Guide to Chemical Hazards, index of CAS numbers Retrieved from http://en..org/wiki/CAS_registry_number Categories: Chemical numbering schemes | American Chemical Society Views Article Discussion this page History Personal tools Log in / create account Navigation Main page Contents Featured content Current events Random article Search Go Search Interaction Community portal Recent changes Contact Donate to Help Toolbox What links here Related changes Upload file Special pages Printable version Permanent link Cite this page Languages العربية Bosanski Brezhoneg Català Česky Dansk Deutsch Español Euskara Ù?ارسی Français Galego 한êµì–´ Italiano עברית Magyar Nederlands 日本語 ‪Norsk bokmÃ¥l‬ ‪Norsk nynorsk‬ Polski Português РуÑ?Ñ?кий SlovenÄ?ina СрпÑ?ки / Srpski Suomi Svenska தமிழà¯? ไทย Tiếng Việt Türkçe 䏿–‡ This page was last modified on 27 August 2008, at 07:5
39 Reasons to Drink Acai Juice Every Day
What is MonaVie - Watch the 8-minute video
Discovering MonaVie Video
The Power of You Video
Effects of MonaVie Active on Antioxidant Capacity in Humans
Log into your Wholesale MonaVie Account
So many of us do not eat a balanced diet, get enough sleep, have too much stress, or are impacted with toxins and pollutants. Drinking 2 ounces of MonaVie twice a day will help your body detoxify as well as build your immune system. Its the smartest thing you can do for yourself, so start today. Buying MonaVie through our company guarantees you support 7 days a week and, if you would like to share MonaVie with your family and friends we will guide you from start to finish.
1. Click on Enroll Now (30 - 55% off retail price)
2. Pay $39 for your Wholesale ID number.
3. NO minimum order required.
4. MonaVie is delivered to your door in 3 to 5 days.