All articles by Helmer Kofod
23 articlesArticles in volume 7 (1953)
| The Swelling of Polymethylenes in Low Molecular Weight Alkane Vapours. Pages: 241-273. DOI number: 10.3891/acta.chem.scand.07-0241 |
| On the Isomerism of Hydroxyurea. I. Kinetics of the Reaction between Hydroxylammonium Ion and Cyanate Ion. Pages: 274-279. DOI number: 10.3891/acta.chem.scand.07-0274 |
| The Anomalous Electric Dipole Moment of p-Quinones. Pages: 928-932. DOI number: 10.3891/acta.chem.scand.07-0928 |
| Brønsted's Congruence Principle and Mixtures of n-Alkanes of Widely Different Chain Lengths. Pages: 933-937. DOI number: 10.3891/acta.chem.scand.07-0933 |
| On the Isomerism of Hydroxyurea. II. Preparation of the Isomers. Pages: 938-941. DOI number: 10.3891/acta.chem.scand.07-0938 |
| Furfuryl Mercaptan. An Improved Preparative Method. Pages: 1302-1306. DOI number: 10.3891/acta.chem.scand.07-1302 |
Articles in volume 8 (1954)
| On the Isomerism of Hydroxyurea. III. Some Physical Properties of the Isomers. Kofod, Helmer; Huang, Tso-Yueh Pages: 485-493. DOI number: 10.3891/acta.chem.scand.08-0485 |
| On the Isomerism of Hydroxyurea. IV. Acid-Base Properties of the Isomers. Kofod, Helmer; Huang, Tso-Yueh Pages: 494-502. DOI number: 10.3891/acta.chem.scand.08-0494 |
| Paper Chromatography of Podophyllin. Jørgensen, Chr.; Kofod, Helmer Pages: 941-953. DOI number: 10.3891/acta.chem.scand.08-0941 |
| Bromopodophyllotoxin. Kofod, Helmer; Jørgensen, Chr. Pages: 1294-1295. DOI number: 10.3891/acta.chem.scand.08-1294 |
| Dehydropodophyllotoxin, a New Compound Isolated from Podophyllum peltatum L. Kofod, Helmer; Jørgensen, Chr. Pages: 1296-1297. DOI number: 10.3891/acta.chem.scand.08-1296a |
Articles in volume 9 (1955)
| Desoxypodophyllotoxin, Isolated from Podophyllin. Kofod, Helmer; Jørgensen, Chr. Pages: 346-347. DOI number: 10.3891/acta.chem.scand.09-0346 |
| A Note on the Melting Point of Podophyllotoxin. Kofod, Helmer; Jørgensen, Chr. Pages: 347-348. DOI number: 10.3891/acta.chem.scand.09-0347 |
| On the Isomerism of Hydroxyurea. V. Polarographic Behaviour of the Lower-Melting Isomer. Pages: 455-470. DOI number: 10.3891/acta.chem.scand.09-0455 |
| The Action of Bromine on Podophyllotoxin and Picropodophyllin. Kofod, Helmer; Jørgensen, Chr. Pages: 1327-1336. DOI number: 10.3891/acta.chem.scand.09-1327 |
| On the Isomerism of Hydroxyurea. VI. Paper-Partition Chromatography. Pages: 1575-1586. DOI number: 10.3891/acta.chem.scand.09-1575 |
Articles in volume 10 (1956)
| On the Isomerism of Hydroxyurea. VII. The Reaction of Hydroxylamine with Cyanic Acid in Anhydrous Ether. Pages: 256-260. DOI number: 10.3891/acta.chem.scand.10-0256 |
Articles in volume 11 (1957)
| On the Isomerism of Hydroxyurea. VIII. A Polarographic Study of the Formation Process in Aqueous Solution. Pages: 5-10. DOI number: 10.3891/acta.chem.scand.11-0005 |
| On the Isomerism of Hydroxyurea. IX. Absorption Spectra in the Infra-Red. Pages: 1276-1277. DOI number: 10.3891/acta.chem.scand.11-1276 |
Articles in volume 12 (1958)
| On the Isomerism of Hydroxylurea. X. Kinetics of the Isomerization. Pages: 1062-1078. DOI number: 10.3891/acta.chem.scand.12-1062 |
Articles in volume 13 (1959)
| On the Isomerism of Hydroxyurea. XI. Absorption Spectra in the Infra-Red. Pages: 461-472. DOI number: 10.3891/acta.chem.scand.13-0461 |
Articles in volume 17 (1963)
| Constituents of the Umbelliferous Plants. I. Constituents of the Root of Angelica archangelica L. Nielsen, Bent Eichstedt; Kofod, Helmer Pages: 1161-1163. DOI number: 10.3891/acta.chem.scand.17-1161 |
| Constituents of the Umbelliferous Plants. II. A Note on the Isolation of O-beta-D-Glucosyl-beta-sitosterol from the Root of Levisticum officinale L. Nielsen, Bent Eichstedt; Kofod, Helmer Pages: 1167-1168. DOI number: 10.3891/acta.chem.scand.17-1167 |