Aldrich Interactive Handbook - (Page 3063)
Organic Ring System and Numbering
Cyclopropane
3 1 2
1,3-Dioxolane
3
4
O
2
3H-1,2-Oxathiole
5 2
3
4 5
O
1
S
O
1
Cyclobutane
1
2
Pyrazolidine
2
3
4 5 1
4
3
H
N
Isoxazole (1,2-Oxazole)
3 2
4 5
N H
N
O
1
Cyclopentane
2
3
4 5 1
Imidazolidine
H
2
3
4 5 1
N N H
3
Oxazole (1,3-Oxazole)
3
4
N
2
O
1
5
Tetrahydrofuran
2
3
4 5
2-Pyrazoline
2
4 5 1
O
1
N
Thiazole (1,3-Thiazole)
3
4
N
2
N H
S
1
5
Furan
2
3
4 5
2-Imidazoline
3
4
N
2
O
1
N H
3
5 1
Isothiazole (1,2-Thiazole)
3 2
4 5
N
S
1
Tetrahydrothiophene
2
3
4 5
Pyrazole (1,2-Diazole)
2
4 5 1
1,2,3-Oxadiazole
2
3
4 5
S
1
N
N H
N N O
1
Thiophene
2
3
4 5
1H-Imidazole
3
4
N
2
1,2,4-Oxadiazole
5 2
3
4
N N
1
S
1
N H N
O
1
5
Pyrrolidine
2
3
4 5 1
2H-Imidazole (1,3-Diazole)
3 2
4 5
1,2,5-Oxadiazole (Furazan)
3 2
4
N H
3
N
1
N
O
1
N
5
3-Pyrroline
2
4 5 1
1,2,3-Triazole
2
3
4 5 1
N H
3
N N N H
3
1,3,4-Oxadiazole
3
4
N N
2
O
1
5
2-Pyrroline
2
4 5 1
1,2,4-Triazole
2
4
N N N H
5 1
1,2,3,4-Oxatriazole
2
3
4 5
N H
3
N N N O
1
Pyrrole (Azole)
2
4 5 1
2-Thiazoline
3
4
N
2
1,2,3,5-Oxatriazole
5 2
3
4 5
N H
3
S
1
N N N O
1
2H-Pyrrole (2H-Azole)
2
4 5
3H-1,2-Dithiole
2
3
4 5
3H-1,2,3-Dioxazole
H
2
3
4 5
N
1
S
S
1
N O O
1
3H-Pyrrole (3H-Azole)
2
3
4 5
2H-1,3-Dithiole
3
4
1,2,4-Dioxazole
5 2
3
4
S N
1 2
N S
1
O
O
1
5
To cross reference another vendor's product, visit sigma-aldrich.com/searchcenter
3063 2855
http://www.sigma-aldrich.com/searchcenter
Table of Contents for the Digital Edition of Aldrich Interactive Handbook
Sigma-Aldrich Group
Table of Contents
How to Use This Handbook
General Information
Sigma-Aldrich® Online Services
Safety Information
To Place an Order
Chem Product Central
Aldrich® Chemistry Publications
Sigma-Aldrich and the Environment
Supporting the Chemistry Community
Catalog Features
Alphabetical Listings
Molecular Formula Index
CAS® Number Index
Product Number Index
Trademark Index
Abbreviations and Acronyms
Organic Ring System and Numbering
Periodic Table
Conversion Tables
Worldwide Service and Support Information
Aldrich Interactive Handbook
https://www.nxtbookmedia.com