α, β
Term · Chemistry · MLC-T-CHM-000026
Stereodescriptors used in several ways. In steroids, a substituent below the plane of the ring system drawn in the standard orientation is alpha, shown with a broken bond, and one above the plane is beta, shown with a solid wedge. In carbohydrates they give the configuration of the anomeric carbon, so that in alpha-D-glucopyranose the hydroxyl on C-1 and the oxygen on C-5 point the same way in a Fischer projection.
| Identifier | MLC-T-CHM-000026 |
|---|---|
| Field | Chemistry |
| Subject | Organic and Biomolecular Chemistry |
| Synonyms | alpha, beta |
| References | PAC, 1996, 68, 2193. 'Basic terminology of stereochemistry (IUPAC Recommendations 1996)' on page 2197 (https://doi.org/10.1351/pac199668122193) |
| See also | CIP priority; Stereodescriptor; Absolute configuration; Tetrapyrroles |
Record as JSON
{
"id": "MLC-T-CHM-000026",
"term": "α, β",
"field": "Chemistry",
"definition": "Stereodescriptors used in several ways. In steroids, a substituent below the plane of the ring system drawn in the standard orientation is alpha, shown with a broken bond, and one above the plane is beta, shown with a solid wedge. In carbohydrates they give the configuration of the anomeric carbon, so that in alpha-D-glucopyranose the hydroxyl on C-1 and the oxygen on C-5 point the same way in a Fischer projection.",
"synonyms": [
"alpha, beta"
],
"subject": "Organic and Biomolecular Chemistry",
"see_also": [
"CIP priority",
"stereodescriptor",
"absolute configuration",
"tetrapyrroles"
],
"references": [
"PAC, 1996, 68, 2193. 'Basic terminology of stereochemistry (IUPAC Recommendations 1996)' on page 2197 (https://doi.org/10.1351/pac199668122193)"
],
"url": "https://mlchart.com/terminology/chemistry/a-b/"
}
Record 26 of 13,676 in Chemistry terminology (MLC-0109). Request the full dataset.