An Analytical Reference Standard
Technical Support & Resources

Visit our FAQ

Contact Us

Toll Free Phone (USA and Canada Only): (888) 526-5351
Direct Phone: (734) 975-3888

Request Technical Support

Technical Support Request

To streamline the process attach the appropriate questionnaire to your inquiry.

Download IHC QuestionnaireDownload WB Questionnaire

View Our Privacy Statement for details on how we use and protect your data. In addition, this site is protected by hCaptcha and its Privacy Policy and Terms of Service apply.

Orphenadrine (citrate)

Item No. 39028

Product Insert (PDF)GC-MS (PDF)Safety Data Sheet (SDS) (PDF)
Technical Information
Formal Name
N,N-dimethyl-2-[(2-methylphenyl)phenylmethoxy]-ethanamine, 2-hydroxy-1,2,3-propanetricarboxylate
CAS Number
4682-36-4
Molecular Formula
C18H23NO • C6H8O7
Formula Weight
461.5
Purity
≥98%
Formulation (Request formulation change)
A solid
Solubility(Learn about Variance in Solubility)
DMSO: Sparingly soluble: 1-10 mg/ml
SMILES
CN(C)CCOC(C1=CC=CC=C1C)C2=CC=CC=C2.OC(CC(O)=O)(C(O)=O)CC(O)=O
InChi Code
InChI=1S/C18H23NO.C6H8O7/c1-15-9-7-8-12-17(15)18(20-14-13-19(2)3)16-10-5-4-6-11-16;7-3(8)1-6(13,5(11)12)2-4(9)10/h4-12,18H,13-14H2,1-3H3;13H,1-2H2,(H,7,8)(H,9,10)(H,11,12)
InChi Key
MMMNTDFSPSQXJP-UHFFFAOYSA-N
Shipping & Storage Information
Storage
-20°C
Shipping
Room temperature in continental US; may vary elsewhere
Recommended Products

Certificates of Analysis & Batch Specific Data

Provide batch numbers separated by commas to download or request available product inserts, QC sheets, certificates of analysis, data packs, and GC-MS data.

Download most recent Certificate of Analysis for this product

    25 mg

    $49

    Add

    50 mg

    $88

    Add

    100 mg

    $157

    Add
    Cayman Chemical
    Cayman Spectral Library

    Our free, searchable, GC-MS spectral database contains 70eV EI mass spectral data of 2,000+ of Cayman’s forensic drug standards.

    DOWNLOAD THE DATABASE
    Product Description

    Orphenadrine (citrate) (Item No. 39028) is an analytical reference standard categorized as a muscle relaxant, an anticholinergic agent, and an antihistamine.1,2,3 Orphenadrine has been associated with misuse.2,3 Formulations containing orphenadrine have been used in the treatment of musculoskeletal pain. This product is intended for research and forensic applications.

    WARNING This product is not for human or veterinary use.

    References & Product Citations
    Product Description References

    1. Hunskaar, S., and Donnell, D. Clinical and pharmacological review of the efficacy of orphenadrine and its combination with paracetamol in painful conditions. J. Int. Med. Res. 19(2), 71-87 (1991).

    2. Chiappini, S., Mosca, A., Miuli, A., et al. Misuse of anticholinergic medications: A systematic review. Biomedicines 10(2), 355 (2022).

    3. Nerush, M.O., Shevyrin, V.A., Golushko, N.I., et al. Classics in chemical neuroscience: Deliriant antihistaminic drugs. ACS Chem Neurosci. 15(21), 3848-3862 (2024).