Reference health

The discovery of crown ethers

https://doi.org/10.1007/bf00658980
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15/15 checkable references clean · checked 2026-07-24

Every reference with a DOI in the deposited reference list resolved to a known work in Crossref or DataCite at the dated check, and none carried a retraction, withdrawal, or removal notice.

21 without a DOI — not checked. A reference deposited without a DOI is never matched by title or guessed at; it stays outside the checked set, and this line discloses that.

The 15 checked references that resolve
resolves10.1021/ie50473a011
Inhibition of Deterioration of Cracked Gasoline durinng Storage
resolves10.1021/jo01353a005
Reversible Oxidation of Phthalocyanines
resolves10.1021/ie50562a036
Mechanism of Antioxidant Action in Gasoline
resolves10.1021/ja01566a074
Preparation of N,N'-Disubstituted p-Quinonediimine-N,N'-dioxides
resolves10.1021/ja01575a050
Products of the Photochemical Decomposition of N,N'-Disubstituted p-Quinonediimine-N,N'-dioxides
resolves10.1021/jo01096a027
Preparation and Properties of Esters of N-Substituted Peroxycarbamic Acids
resolves10.1021/jo01045a503
Photoaddition of Tetrahydrofuran to 7,7,8,8-Tetracyanoquinodimethan and Tetracyanoethylene
resolves10.1021/ja00986a052
Cyclic polyethers and their complexes with metal salts
resolves10.1016/0160-9327(71)90041-X
Cryptates
resolves10.1021/ja00705a605
Crystalline Salt Complexes of Macrocyclic Polyethers
resolves10.1021/ja00705a606
New Macrocyclic Polyethers
resolves10.1021/jo00801a003
Macrocyclic polyether sulfides
resolves10.1021/jo00811a027
Crystalline complexes of macrocyclic polyethers with thiourea and related compounds
resolves10.1002/ange.19720840104
Makrocyclische Polyäther und ihre Komplexe
resolves10.15227/orgsyn.052.0066
MACROCYCLIC POLYETHERS: DIBENZO-18-CROWN-6 POLYETHER AND DICYCLOHEXYL-18-CROWN-6 POLYETHER
The 21 references without a DOI — listed, not checked
no DOI — not checkedF. B. Downing, A. E. Parmalee and C. J. Pedersen: U.S. Patent 2,004,160 (6/11/35) to Du Pont.
no DOI — not checkedF. B. Downing and C. J. Pedersen: U.S. Patent 2,008,753 (7/23/35) to Du Pont; also 2,087,103 (7/13/37).
no DOI — not checkedR. G. Clarkson and C. J. Pedersen: U.S. Patent 2,054,282 (9/15/36) to Du Pont.
no DOI — not checkedL. Spiegler and C. J. Pedersen: U.S. Patent 2,087,098 (7/13/37) to Du Pont.
no DOI — not checkedF. B. Downing and C. J. Pedersen: U.S. Patent 2,121,397 (6/21/38) to Du Pont.
no DOI — not checkedF. B. Downing and C. J. Pedersen: U.S. Patent 2,181,121 (11/28/39) to Du Pont.
no DOI — not checkedC. J. Pedersen:Oil & Gas Journal, p. 97, July 27, (1939).
no DOI — not checkedC. J. Pedersen:Delaware Chemical Symposium, Dec. 1, (1948). ?Prooxidant Catalytic Activity of Metal Chelates?.
no DOI — not checkedC. J. Pedersen:Symposium on Chelate Chemistry. Centenary Celebration of Brooklyn Polytechnic Institute, New York, N.Y. Published inAdvances in Chelate Chemistry, p. 113 (1954).
no DOI — not checkedC. J. Pedersen:Delaware Chemical Symposium, Jan. 21, (1950). ?Mechanism of Decomposition of Perbenzoic Acid Compared with Benzoyl Peroxide?.
no DOI — not checkedC. J. Pedersen: ?Antioxidants?,Encyclopedia Britannica, (1953).
no DOI — not checkedC. J. Pedersen: U.S. Patent 2,867,516 (1/6/59) to Du Pont.
no DOI — not checkedC. J. Pedersen: U.S. Patent 3,341,311 (9/12/67) to Du Pont.
no DOI — not checkedC. L. Pedersen: U.S. Patent 3,039,299-300 (6/12/62) to Du Pont.
no DOI — not checkedC. J. Pedersen: U.S. Patent 3,232,914 (2/1/66) to Du Pont.
no DOI — not checkedC. J. Pedersen: U.S. Patent 3,320,214 (5/16/67) to Du Pont.
no DOI — not checkedC. J. Pedersen: U.S. Patent 3,381,778 (1/2/68) to Du Pont.
no DOI — not checkedC. J. Pedersen:Aldrichimica Acta, (4)1, 1 (1971).
no DOI — not checkedC. J. Pedersen:Fed. Proc. Fed. Am. Soc. Exp. Biol. 27, 1305 (1968).
no DOI — not checkedC. J. Pedersen: U.S. Patents 3,562,295, (2/9/71); 3,622,577 (11/23/71); 3,686,225 (8/22/72); 3,687,978 (8/29/72); with M. Bromels 3,847,949 (11/12/74); 3,856,813 (12/24/74); 3,873,569 (3/25/75); 3,987,061 (10/19/76); 3,998,838 (12/21/76); 4,031,111 (6/21/77); all to Du Pont.
no DOI — not checkedC. J. Pedersen and H. E. Schroeder: inCurrent Topics in Macrocyclic Chemistry in Japan, E. Kimura (Ed.), Hiroshima Univ. School of Medicine (1987), p. 1, 5.
What this badge says. CiteStamped means the CHECKABLE references of this work were clean at the dated check: each resolved to a known work in a public registry, and none carried a retraction notice at that time. It says nothing about the quality, findings, or importance of the work itself, and nothing about references deposited without a DOI.

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