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NAICS
NAICS Codes

Official North American industry classification system for business reporting and analysis.

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SIC
SIC Codes

Established U.S. industry classification system widely used across business, reporting, analytics, and cross-dataset comparability.

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Code Systems
Code Systems

Standard classification systems used to organize industries, products, occupations, and business identifiers across U.S. and global datasets

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Classification Conversion Tools

Convert industry codes between classification systems

U.S Industry Codes SIC → NAICS NAICS → SIC
International Industry Codes ISIC → NAICS NAICS → ISIC
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Governance

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ISIC (International) SOC (Occupations)

Companies for "clinical-trials-research"

  • Clinical Trials Research Inc
    Sacramento, CA, 95821 Country: US US
    541720 - Research and Development in the Social Sciences and Humanities
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  • Clinical Trials Research Unit
    Milwaukee, WI, 53201 Country: US US
    621399 - Offices of All Other Miscellaneous Health Practitioners
    More Companies in this Industry
  • Clinical Trial Research Center
    Camden, NJ, 08104 Country: US US
    541715 - Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology]
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  • Advanced Clinical Trials and Research
    Miami, FL, 33135 Country: US US
    541720 - Research and Development in the Social Sciences and Humanities
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  • Agile Clinical Research Trials, LLC
    Atlanta, GA, 30328 Country: US US
    624190 - Other Individual and Family Services
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  • Trials and Clinical Research of Homestead
    Homestead, FL, 33030 Country: US US
    541720 - Research and Development in the Social Sciences and Humanities
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Sector-level SIC & NAICS classification hubs defining scope, boundaries, examples, and cross-industry distinctions.

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Code lookups, conversions, and research utilities for SIC, NAICS, ISIC, and related classification systems.

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