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CS-W001157 4
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tert-Butyl 7-formyl-2-azaspiro[3.5]nonane-2-carboxylate

  • CAS No. 1434142-21-8

  • Cat. No. CS-0048140
  • Purity≥97%
  • MDL No.None
  • HazMat Fee +

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    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.

tert-Butyl 7-formyl-2-azaspiro[3.5]nonane-2-carboxylate|CS-0048140

Structure of 1434142-21-8

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Description

tert-Butyl 7-formyl-2-azaspiro[3.5]nonane-2-carboxylate features a spirocyclic scaffold with a formyl group at the C7 position and a tert-butyl ester at C2, enabling direct functionalization. The electron-deficient aldehyde facilitates nucleophilic additions and condensation reactions. This bench-stable intermediate integrates efficiently into complex heterocyclic syntheses, particularly in medicinal chemistry campaigns targeting constrained nitrogen-containing frameworks.

Application

tert-Butyl 7-formyl-2-azaspiro[3.5]nonane-2-carboxylate serves as a versatile spirocyclic scaffold for medicinal chemistry campaigns, enabling direct access to complex nitrogen-containing heterocycles. The pendant aldehyde group facilitates efficient imine formation, reductive amination, and cyclization reactions under mild conditions. Its tert-butyl ester offers excellent bench stability and simplifies purification, while the constrained spiro architecture provides defined stereochemical control in downstream transformations.

General Information

  • CAS No. 1434142-21-8
  • Cat. No. CS-0048140
  • Purity ≥97%
  • MDL No. None
  • Storage -20°C, stored under nitrogen
  • Shipping Room temperature in continental US; may vary elsewhere.
  • Molecular Formula C₁₄H₂₃NO₃
  • Molecular Weight 253.34
  • Synonym(s) None
  • SMILES CC(C)(C)OC(=O)N1CC2(C1)CCC(CC2)C=O

Computational Chemistry Data

  • TPSA   46.61
  • LogP   2.6126
  • H_Acceptors   3
  • H_Donors   0
  • Rotatable_Bonds   1

Safety Information

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GHS Pictogram :
GHS No : GHS07
Signal Word : Warning
UN#: N/A
Class : N/A
Packing Group : N/A
Hazard Statements : H302
Precautionary Statements : P264-P270-P330-P501

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