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CS-W001157 4
Total: USD 88.00

4-Amino-3-ethylbenzoic acid

  • CAS No. 51688-75-6

  • Cat. No. CS-0028776
  • Purity≥95%
  • MDL No.MFCD04114098
  • HazMat Fee +

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    The shipment is processed through FedEx Ground under the Limited Quantity option.

    Each bottle is packed as an Excepted Quantity, with a maximum of 1g for items in class 6.1 packing group I or II, and up to 25g for all other hazardous materials.

    If shipping is charged to your FedEx account, the HazMat fee will be billed directly by the courier. Otherwise, the fee will be included on your invoice. To help you avoid the HazMat fee, we can package a 5g order of a class 6.1 packing group I or II material as five separate 1g units, and a 100g order of any other dangerous good as four 25g units. This packaging adjustment will be made unless you instruct otherwise on your purchase order. Below, you will find the fee schedule from FedEx for handling hazardous materials.

    Type
    HazMat Fee
    Excepted Quantity $0.00
    FedEx Limited Quantities Ground $0.00
    Hazmat Ground shipping $50.00+
    Inaccessible (Haz class 6.1 or 9), Domestic $68.00+
    Accessible (Haz class 3, 4, 5 or 8), Domestic $158.00+
    Inaccessible (Haz class 6.1 or 9), International $108.00+
    Accessible (Haz class 3, 4, 5 or 8), International $238.00+

    An item is classified as a dangerous good if our website displays Hazardous Material (HazMat) information for it.

    There is a HazMat shipping fee for each item that qualifies as a dangerous good. Please contact our quotation team via email to confirm the details.

*For research and further manufacturing use only, not for direct human use.

4-Amino-3-ethylbenzoic acid|CS-0028776

Structure of 51688-75-6

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Description

4-Amino-3-ethylbenzoic acid features a conjugated aromatic core with strategically positioned amino and ethyl groups, enabling versatile integration into pharmaceutical intermediates and bioactive molecule scaffolds. The electron-donating amino substituent enhances reactivity in coupling processes, while the para-amino orientation supports predictable electronic modulation. This bench-stable derivative combines synthetic accessibility with functional group compatibility for use in medicinal chemistry campaigns.

Application

4-Amino-3-ethylbenzoic acid serves as a versatile building block for bioactive heterocycles and pharmaceutical intermediates, enabling efficient derivatization via amide coupling, electrophilic substitution, or reductive amination. The ortho-alkylated aromatic scaffold provides enhanced metabolic stability and modulates solubility, while the carboxylic acid and primary amine groups offer orthogonal handles for sequential functionalization. Bench-stable and readily purified by recrystallization, it supports scalable synthesis in medicinal chemistry campaigns.

General Information

  • CAS No. 51688-75-6
  • Cat. No. CS-0028776
  • Purity ≥95%
  • MDL No. MFCD04114098
  • Storage 4°C
  • Shipping Room temperature in continental US; may vary elsewhere.
  • Molecular Formula C₉H₁₁NO₂
  • Molecular Weight 165.19
  • Synonym(s) None
  • SMILES O=C(O)C1=CC=C(N)C(CC)=C1

Computational Chemistry Data

  • TPSA   63.32
  • LogP   1.5294
  • H_Acceptors   2
  • H_Donors   2
  • Rotatable_Bonds   2

Safety Information

Download SDS
GHS Pictogram :
GHS No : GHS07
Signal Word : Warning
UN#: N/A
Class : N/A
Packing Group : N/A
Hazard Statements : H302-H315-H319-H335
Precautionary Statements : P261-P264-P270-P271-P280-P302+P352-P304+P340-P305+P351+P338-P330-P362+P364-P403+P233-P405-P501

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