Kernel Metadata Declaration — on demand
ISO 26324 asks a DOI Registration Agency to produce a Kernel Metadata Declaration for every DOI it issues. Give any DOI: its public record becomes a record in the Smart Scholars DOI Metadata Format 1.0, checked against every rule, and declared as the Kernel XML.
✓ Meets every rule of the format
The record below is complete and every controlled value is a DOI Attribute Value Set 2.3 spelling. The Declaration on the right follows DOIMetadataKernel.xsd element by element.
What the DOI identifies
Catalytic Oxidation of Certain Xanthine Alkaloid Compounds under Conventional and Non-Conventional Conditions
10.46243/jst.2021.v6.i3.pp123-127 · JournalArticle — an article in a journal · Digital · Visual · Language · en
Published 2021-06-01
Part of Journal of Science & Technology · ISSN 2456-5660 · vol. 06 · no. 03 · pp. 123–127
Principal agents
- S. Shylaja (author → Author)
- Longman Publishers (publisher → Publisher)
Also in the record, outside the Kernel: the abstract, the licence, 4 links, 15 references. Source: Crossref (member 25296), registered 2026-09-12, last deposited 2026-09-20.
System metadata — ISO 26324:2025, Annex B · DOI Handbook 10.1
Each element by the standard's name and the Handbook's (in grey), read off the record.
| DOI Name DOI name | 10.46243/jst.2021.v6.i3.pp123-127 |
| Referent Type referentType | Creation |
| Referent Sub-Type referentSubType | JournalArticle — an article in a journal |
| Referent Name(s) referentName(s) | Catalytic Oxidation of Certain Xanthine Alkaloid Compounds under Conventional and Non-Conventional Conditions (PrincipalTitle, en) |
| Basic Metadata basicMetadata | author: S. Shylaja publisher: Longman Publishers published: 2021-06-01 part of: Journal of Science & Technology · ISSN 2456-5660 · vol. 06 · no. 03 · pp. 123–127 language: en form: Digital · Visual · Language |
| Referent Identifier(s) alternateIdentifier(s) | none besides the DOI |
| Registration Authority registrationAuthorityCode | Crossref — issued by Crossref (member 25296); held here as a copy |
| Created Date issueDate | 2026-09-12 |
| relatedIdentifiers | none needed — the descriptive metadata is in this record |
The record
{
"format": "smartscholars-doi-metadata/1.0",
"doi": "10.46243/jst.2021.v6.i3.pp123-127",
"referent": "Creation",
"type": "JournalArticle",
"structural_type": "Digital",
"modes": [
"Visual"
],
"characters": [
"Language"
],
"titles": [
{
"value": "Catalytic Oxidation of Certain Xanthine Alkaloid Compounds under Conventional and Non-Conventional Conditions",
"type": "PrincipalTitle",
"lang": "en"
}
],
"identifiers": [
{
"type": "DOI",
"value": "10.46243/jst.2021.v6.i3.pp123-127"
}
],
"agents": [
{
"role": "author",
"name": {
"given": "",
"family": "S. Shylaja"
},
"sequence": "first"
},
{
"role": "publisher",
"name": {
"org": "Longman Publishers"
}
}
],
"dates": {
"published": "2021-06-01",
"date_type": "PublicationDate",
"online": "2021-06-01"
},
"language": "en",
"container": {
"type": "Journal",
"titles": [
{
"value": "Journal of Science & Technology",
"type": "PrincipalTitle"
}
],
"identifiers": [
{
"type": "ISSN",
"value": "2456-5660",
"medium": "electronic"
}
],
"volume": "06",
"issue": "03",
"pages": {
"first": "123",
"last": "127"
}
},
"links": [
{
"url": "https://www.jst.org.in/index.php/pub/article/view/836",
"return_type": "text/html",
"primary": true
},
{
"url": "https://www.jst.org.in/index.php/pub/article/download/836/765",
"purpose": "text-mining",
"return_type": "application/pdf"
},
{
"url": "https://www.jst.org.in/index.php/pub/article/download/836/2447",
"purpose": "text-mining",
"return_type": "application/xml"
},
{
"url": "https://www.jst.org.in/index.php/pub/article/view/836/765",
"purpose": "similarity-checking"
}
],
"abstract": {
"value": "Oxidation of Xanthine alkaloids such as Xanthine (XAN), hypoxanthine (HXAN), caffeine 1 (CAF), theophylline (TPL), theobromine (TBR), have been undertaken by Ru(III) in acetonitrile medium. The reaction is too sluggish in solution phase, but moderately fast in presence of Poly ethylene glycols (PEG) such as PEG-200, 300,400&600. PEG bound Ru(III) [H-(OCH2 -CH2 )n -O –RuCl2 (H2O)3 (CH3CN)2 ) is considered to be more reactive than Ru(III) and thus accelerate the reaction rates. However, the reactions are dramatically enhanced under microwave irradiations. Present protocol has several advantages, such as solvent-free conditions, during work-up, fast reaction times, high yields, eco-friendly operational and experimental simplicity, readily available additives as catalysts.",
"lang": "en"
},
"license": {
"url": "https://creativecommons.org/licenses/by/4.0/",
"start": "2021-06-01",
"applies_to": "vor"
},
"references": [
{
"key": "ref1",
"doi": "10.1039/b200559j",
"unstructured": "A. Haimov and R. Neumann, “Polyethylene glycol as a non-ionic liquid solvent for polyoxometalate catalyzed aerobic oxidation,” Chemical Communications, no. 8, pp. 876–877, 2002"
},
{
"key": "ref2",
"doi": "10.1016/s0040-4020(01)89486-2",
"unstructured": "N. L. Bauld, “Cation radical cycloadditions and related sigmat-ropic reactions,” Tetrahedron, vol. 45, no. 17, pp. 5307–5363, 1989"
},
{
"key": "ref3",
"doi": "10.1007/3-540-57565-0_76",
"unstructured": "M. Schmittel, “Umpolung of ketones via enol radical cations,”in Topics in Current Chemistry, vol. 169, pp. 183–230, 1994"
},
{
"key": "ref4",
"doi": "10.1002/anie.199703921",
"unstructured": "M. Schmittel and A. Langels, “A short-lived radical dication as a key intermediate in the rearrangement of a persistent cation: the oxidative cyclization of 2,2-dimesityl-1-(4-N,N-dimethylaminophenyl)ethenol,” Angewandte Chemie, vol. 36,no. 4, pp. 392–395, 1997"
},
{
"key": "ref5",
"doi": "10.1039/c39930001739",
"unstructured": "M. Rock and M. Schmittel, “Controlled oxidation of enolates to a-carbonyl radicals and a-carbonyl cations,” Journal of the Chemical Society, Chemical Communicationspp, no. 23, pp.1739–1741, 1993"
},
{
"key": "ref6",
"doi": "10.1021/jo00034a038",
"unstructured": "B.B. Snider and T. Kwon, “Oxidative cyclization of.delta.epsilon.- and.epsilon.,.zeta.-unsaturated enol silyl ethers and unsaturated siloxycyclopropanes,” The Journal of Organic Chemistry, vol. 57, no. 8, pp. 2399–2410, 1992"
},
{
"key": "ref7",
"doi": "10.1039/b517397c",
"unstructured": "R. Kumar, P. Chaudhary, S. Nimesh, and R. Chandra, “Polyethy-lene glycol as a non-ionic liquid solvent for Michael addition reaction of amines to conjugated alkenes,” Green Chemistry, vol.8, no. 4, pp. 356–358, 2006"
},
{
"key": "ref8",
"doi": "10.1246/cl.2005.576",
"unstructured": "K. Tanemura, T. Suzuki, Y. Nishida, and T. Horaguchi, “Aldol condensation in water using polyethylene glycol 400,” Chem-istry Letters, vol. 34, no. 4, pp. 576–577, 2005"
},
{
"key": "ref9",
"doi": "10.1016/0040-4039(95)00631-l",
"unstructured": "L. Heiss and H. J. Gais, “Polyethylene glycol monomethyl ether-modified pig liver esterase: preparation, characterization and catalysis of enantioselective hydrolysis in water and acylation in organic solvents,” Tetrahedron Letters, vol. 36, no. 22, pp. 3833–3836, 1995"
},
{
"key": "ref10",
"doi": "10.1039/b102337n",
"unstructured": "V. N. Vasudevan and S. V. Rajendra, “Microwave-accelerated Suzuki cross-coupling reaction in polyethylene glycol (PEG),”Green Chemistry, no. 3, pp. 146–148, 2001"
},
{
"key": "ref11",
"unstructured": "P. Anastas and J. Warner, “Green Chemistry: Theory and Practice,” Oxford University Press, New York, 1998"
},
{
"key": "ref12",
"unstructured": "D. E. Metzler, “Biochemistry: The Chemical Reactions of Living Cells,” Academic Press, New York, 1977, p. 882"
},
{
"key": "ref13",
"doi": "10.1111/j.1753-4887.1978.tb03717.x",
"unstructured": "D. M. Graham, “Caffeine—Its Identity, Dietary Sources,Intake and Biological Effects,” Nutrition Reviews, Vol.36, No. 4, 1978, pp. 97- 102"
},
{
"key": "ref14",
"doi": "10.1021/bk-1997-0680",
"unstructured": "J. M. Harris and S. Zalipsky, “Poly(Ethylene Glycol): Chemistry and Biological Applications,” ACS Books, Washington DC, 1997. doi:10.1021/bk-1997-0680"
},
{
"key": "ref15",
"unstructured": "R. S. Varma, “Microwaves: Theory and Application in Material Processing IV,” D. E. Clark, W. H. Sutton and D.A. Lewis, Eds., American Ceramic Society, Westerville,1997, p. 357"
}
],
"record": {
"registrant": "Longman Publishers",
"registered": "2026-09-12",
"updated": "2026-09-20",
"issue_number": 1,
"source": "crossref-api",
"source_agency": "Crossref (member 25296)"
}
}The Kernel Metadata Declaration
DOIMetadataKernel.xsd · namespace http://www.doi.org/2010/DOISchema · Attribute Value Sets 2.3 · draft — the agency's DOI name is filled in on accreditation
<?xml version="1.0" encoding="UTF-8"?>
<!-- DRAFT declaration: Smart Scholars is not yet a DOI Registration Agency. registrationAgencyDoiName is a marker (10.0/ is no RA's prefix) and is filled in on accreditation. -->
<kernelMetadata xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.doi.org/2010/DOISchema https://www.doi.org/doi_schemas/DOIMetadataKernel.xsd" xmlns="http://www.doi.org/2010/DOISchema">
<referentDoiName>10.46243/jst.2021.v6.i3.pp123-127</referentDoiName>
<primaryReferentType>Creation</primaryReferentType>
<registrationAgencyDoiName>10.0/smart-scholars-draft</registrationAgencyDoiName>
<issueDate>2026-10-04</issueDate>
<issueNumber>1</issueNumber>
<referentCreation>
<name primaryLanguage="en">
<value>Catalytic Oxidation of Certain Xanthine Alkaloid Compounds under Conventional and Non-Conventional Conditions</value>
<type>PrincipalTitle</type>
</name>
<identifier>
<nonUriValue>10.46243/jst.2021.v6.i3.pp123-127</nonUriValue>
<uri returnType="text/html" doesContentNegotiation="true">https://doi.org/10.46243/jst.2021.v6.i3.pp123-127</uri>
<type>DOI</type>
</identifier>
<identifier>
<uri returnType="text/html">https://www.jst.org.in/index.php/pub/article/view/836</uri>
<type>URI</type>
</identifier>
<identifier>
<uri>https://www.jst.org.in/index.php/pub/article/download/836/765</uri>
<type>URI</type>
</identifier>
<identifier>
<uri returnType="application/xml">https://www.jst.org.in/index.php/pub/article/download/836/2447</uri>
<type>URI</type>
</identifier>
<identifier>
<uri>https://www.jst.org.in/index.php/pub/article/view/836/765</uri>
<type>URI</type>
</identifier>
<structuralType>Digital</structuralType>
<mode>Visual</mode>
<character>Language</character>
<type>JournalArticle</type>
<principalAgent>
<name>
<value>S. Shylaja</value>
<type>PrincipalName</type>
</name>
<role>Author</role>
</principalAgent>
<principalAgent>
<name>
<value>Longman Publishers</value>
<type>PrincipalName</type>
</name>
<role>Publisher</role>
</principalAgent>
<linkedCreation>
<name>
<value>Journal of Science & Technology</value>
<type>PrincipalTitle</type>
</name>
<identifier>
<nonUriValue>2456-5660</nonUriValue>
<type>ISSN</type>
</identifier>
<referentCreationRole>Part</referentCreationRole>
<referentCreationSequenceIdentifier>
<value>06</value>
<type>VolumeNumber</type>
</referentCreationSequenceIdentifier>
<referentCreationSequenceIdentifier>
<value>03</value>
<type>IssueNumber</type>
</referentCreationSequenceIdentifier>
<referentCreationSequenceIdentifier>
<value>123-127</value>
<type>PageNumber</type>
</referentCreationSequenceIdentifier>
</linkedCreation>
<language>en</language>
<languageOfReferentContent>
<language>en</language>
<languageOfReferentContentType>Original</languageOfReferentContentType>
</languageOfReferentContent>
<creationDate>
<date>2021-06-01</date>
<creationDateType>PublicationDate</creationDateType>
</creationDate>
</referentCreation>
</kernelMetadata>
