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007 Introduction Field 007 Values Table 007 Electronic Resource 007 Globe 007 Map 007 Microform 007 Motion Picture 007 Nonprojected Graphic 007 Projected Graphic 007 Remote-sensing Image 007 Sound Recording 007 Tactile Material 007 Videorecording 010 LC Control No. 012 Terminal Display 013 Patent Control Information 015 National Bibliography No. 016 National Bibliographic Agency Control No. 017 Copyright/Legal Deposit No. 018 Copyright Article-Fee Code 019 OCLC Control No. Cross-Reference 020 ISBN 022 ISSN 024 Other Standard Identifier 025 Overseas Acquisition No. 026 Fingerprint Identifier 027 STRN 028 Publisher No. 029 Other System Control No.

030 CODEN Designation

031 Musical Incipits Information 032 Postal Registration No. 033 Date/Time/Place of an Event 034 Coded Cartographic Mathematical Data 035 System Control No. 036 Original Study No. 037 Source of Acquisition 040 Cataloging Source 041 Language Code 042 Authentication Code 043 Geographic Area Code 044 Country Code 045 Time Period 046 Special Coded Dates 047 Musical Composition Code 048 Number of Instruments/Voices Code 049 Local Holdings 050-099 Introduction 050 LC Call No. 051 LC Copy, Issue, Offprint Statement 052 Geographic Classification 055 Classification No.-Canada 060 NLM Call Number 061 NLM Copy Statement 066 Character Sets 070 NAL Call No. 071 NAL Copy Statement 072 Subject Category Code 074 GPO Item No. 079 OCLC Master Record Number 080 UDC No. 082 DDC No. 084 Other Classification No. 086 GovDoc Classification No. 088 Report No. 090 Local LC-type Call No. 092 Local Dewey Call No. 096 Local NLM-type Call No. 098 Other Classification Schemes 099 Local Free-Text Call No.

Contents   Fixed field   0xx   1xx   2xx   3xx   4xx   5xx   6xx   7xx   8xx   9xx

030  CODEN Designation (R)

Input Standards

Required if applicable/Required if applicable
1st Indicator  Undefined
blank character  Undefined
2nd Indicator  Undefined
blank character  Undefined
Subfields (R=Repeatable  NR=Nonrepeatable) Input Standards
‡a CODEN (NR) Required if applicable/Required if applicable
‡z Canceled/invalid CODEN (R) Required if applicable/Required if applicable


Definition

Contains the CODEN designation assigned to a periodical title by the Chemical Abstracts Service. Each CODEN consists of four mnemonic letters and a fifth letter, A, B, C, or D. The sixth character, a check character, is alphabetic or numeric.

Validation

 

The sixth character of a CODEN is a calculated check character, either numeric, 2–9, or alphabetic, A–Z. It is used to identify and eliminate typographical errors.

When you validate a record containing field 030, the system checks the CODEN in subfield ‡a to verify that the content and length are correct and that the check character matches the calculated check character.

If there is an error in the CODEN (e.g., the CODEN is too long or too short, has an incorrect character in any position or incorrect value in the check digit), the system displays an error message with the CODEN remaining in subfield ‡a. If you made a typographical error, correct the CODEN and validate the record again. If the error message appears again and you transcribed the CODEN exactly, the CODEN is in error. Put the CODEN in subfield ‡z

1st Indicator

 Undefined. The 1st indicator position is undefined and contains a blank (blank character ).
blank character Undefined

 Undefined. The 2nd indicator position is undefined and contains a blank (blank character ).
blank character Undefined

Subfields
‡a CODEN

Enter the entire CODEN and the check character. Do not enter spaces or punctuation (e.g., hyphens) which may appear between the fourth and fifth characters.

030 AISJB6
030 CADIDW
‡z Canceled/invalid CODEN

Enter the number in the same form as a valid CODEN.

Printing

 Field 030 does not print.

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