S-2-Aminobutanamide hydrochloride

Details Specifications
CAS No.
7682-20-4
Mol. Weight
136.8
Appearance
White to off white powder
Synonyms
(S)-(+)-2-Aminobutanamide hydrochloride
Storage
Preserve in well closed container and store at controlled room temperature

Disclaimer: 

The information provided on this webpage is based on the best available knowledge at the time of publication; however, accuracy and completeness are not guaranteed. Product specifications may change without notice. It is the responsibility of the purchaser or user to verify suitability and compliance. This product is intended for research use only and is not approved for human consumption.

S-2-Aminobutanamide hydrochloride (CAS 7682-20-4), also known as (S)-(+)-2-aminobutanamide hydrochloride, is a chiral amino amide salt that serves as a key starting material (KSM) in the manufacture of antiepileptic active pharmaceutical ingredients. It is best recognised as Levetiracetam KSM-I, the foundational chiral building block from which the levetiracetam molecular framework is constructed, and it is equally relevant to the synthesis of the follow-on antiepileptic brivaracetam.

Supplied as a white to off-white powder with a molecular weight of 136.8 as published in the product specification, the compound provides the defined (S)-stereocentre that determines the pharmacological activity of the downstream API. Because the therapeutic activity of levetiracetam resides almost entirely in the S-configuration, the enantiomeric purity of this intermediate directly governs the quality, yield, and regulatory acceptability of the finished drug substance, making the choice of supplier a critical decision for API manufacturers.

As established API manufacturers in India, Shilpa Pharma Lifesciences supplies S-2-Aminobutanamide hydrochloride as a bulk API intermediate to pharmaceutical manufacturers worldwide. Backed by integrated CDMO services, Shilpa Pharma supports partners from development-scale evaluation through sustained commercial supply.

S-2-Aminobutanamide hydrochloride is supplied for use by pharmaceutical manufacturers as a key starting material in the multi-step synthesis of antiepileptic active pharmaceutical ingredients. In the levetiracetam route, the free amine liberated from the hydrochloride salt is condensed with a suitable four-carbon electrophile and cyclised to construct the 2-oxopyrrolidine acetamide core, with the pre-established (S)-stereocentre carried through to the final API without the need for a late-stage chiral resolution.

In a development and manufacturing context, the S-2-Aminobutanamide hydrochloride API intermediate supports process route development and optimisation, chiral method development and enantiomeric purity determination, impurity profiling and reference standard qualification, process validation batches, and scale-up to commercial campaigns. Its use as a pre-formed chiral synthon is a significant efficiency advantage, avoiding the yield losses inherent in resolving a racemate at a later stage of the sequence.

The material is provided exclusively to qualified pharmaceutical manufacturers, biotechnology companies, and international trading partners for development and manufacturing use under applicable regulatory frameworks.

As a pharmaceutical intermediate rather than a finished active, the relevant safety considerations for S-2-Aminobutanamide hydrochloride are occupational and chemical rather than clinical. The compound should be regarded as a potential irritant to the eyes, skin, and respiratory tract, and should be handled by trained personnel using appropriate engineering controls, local exhaust ventilation, and personal protective equipment including gloves, eye protection, and respiratory protection where dust generation is likely. Practices that minimise airborne dust during charging, sampling, and transfer operations are recommended.

The material should be preserved in a well closed container and stored at controlled room temperature, protected from moisture, to maintain quality and enantiomeric integrity over its shelf life. Complete handling, exposure control, first aid, and disposal guidance is provided in the product’s Safety Data Sheet (SDS), which should be reviewed before use.

This information is provided for scientific and technical reference to pharmaceutical professionals and does not constitute medical advice.

The cost of S-2-Aminobutanamide hydrochloride varies according to order volume, required specifications including enantiomeric purity limits, packaging, documentation, and delivery destination. As bulk intermediate pricing is project- and quantity-specific, Shilpa Pharma does not publish standard list pricing for this product.

For current S-2-Aminobutanamide hydrochloride pricing, bulk quantity cost estimates, and commercial supply terms, pharmaceutical buyers are invited to contact Shilpa Pharma directly. As a trusted S-2-Aminobutanamide hydrochloride supplier and exporter, Shilpa Pharma provides a tailored quotation based on the required quantity, specification, and documentation needs, along with competitive, cost-effective supply options that support long-term programme economics for both development-scale and commercial-scale requirements.

Shilpa Pharma Lifesciences is one of the most trusted S-2-Aminobutanamide hydrochloride manufacturers in India and a full-scale CDMO partner, supplying high-quality actives and intermediates to pharmaceutical companies across more than 80 countries. For this API intermediate, partners choose Shilpa Pharma for:

  • Chiral synthesis expertise: proven capability in stereoselective chemistry, with rigorous control of enantiomeric purity as the defining quality attribute of this material.
  • Regulatory-ready manufacturing: produced at cGMP-compliant facilities supported by approvals from USFDA, EU GMP, PMDA, TGA, ANVISA, COFEPRIS, and KFDA.
  • Documentation for KSM filings: technical and analytical support for starting-material justification, specification setting, and inclusion in regulatory submissions.
  • Analytical depth: chiral method development and validation, impurity profiling, and reference standard qualification carried out in-house.
  • Reliable global supply: scalable capacity with established export, logistics, and documentation infrastructure, positioning Shilpa Pharma among dependable S-2-Aminobutanamide hydrochloride suppliers and exporters for regulated and emerging markets.
  • Backward integration advantage: intermediate and API capability under one roof, offering supply-chain continuity and reduced vendor risk.

Partner with Shilpa Pharma, a trusted S-2-Aminobutanamide hydrochloride manufacturer and exporter, for a dependable, scalable, and cost-effective global source of this intermediate.

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Questions & Answers

FAQ on S-2-Aminobutanamide hydrochloride

Everything You Need to Know About Shilpa Pharma

It is a chiral key starting material used in the manufacture of antiepileptic active pharmaceutical ingredients, most notably levetiracetam, where it is designated KSM-I. It supplies the defined (S)-stereocentre and the amide functionality that are carried through into the final drug substance.
The principal application is levetiracetam, the widely used broad-spectrum antiepileptic. The same chiral synthon is also relevant to the synthesis of brivaracetam, a follow-on antiepileptic sharing the 2-oxopyrrolidine acetamide framework, which makes the intermediate valuable across more than one commercial programme.
The anticonvulsant activity of levetiracetam resides in the S-configuration, while the R-enantiomer is essentially inactive and is treated as an impurity in the finished API. Starting from an enantiomerically defined intermediate carries the correct stereochemistry through the entire route, avoiding the substantial yield loss associated with resolving a racemate at a later stage.
Enantiomeric purity is the defining quality attribute of this material and is controlled by validated chiral analytical methods. Specification limits are typically agreed with the buyer to align with the enantiomeric impurity limits of the downstream drug substance, and Shilpa Pharma can supply material against customer-specific specifications.
A key starting material is the point in a synthetic route from which cGMP controls and regulatory scrutiny formally begin, as framed under ICH Q11. The selection and justification of a KSM, along with its specification and supplier controls, forms part of the drug substance submission, so a well-characterised intermediate with robust documentation directly supports a smoother filing.
The compound carries CAS number 7682-20-4, is also known as (S)-(+)-2-aminobutanamide hydrochloride, and is supplied as a white to off-white powder with a molecular weight of 136.8 as published in the product specification. A full specification sheet and technical documentation are available on request.
It should be preserved in a well closed container at controlled room temperature, protected from moisture, to maintain quality and enantiomeric integrity. It should be handled as a potential irritant, using appropriate ventilation and personal protective equipment, with the Safety Data Sheet reviewed before use.
Yes. Shilpa Pharma routinely supplies intermediates against customer-defined specifications covering assay, chiral purity, related substances, residual solvents, and other attributes, supported by in-house analytical method development and validation.
Shilpa Pharma Lifesciences is among the leading API manufacturers in India and global exporters, supplying this intermediate to pharmaceutical partners across the USA, Europe, Japan, and 80+ countries, with established export and documentation infrastructure. Minimum order quantities apply.
Yes. Through its integrated CDMO services, Shilpa Pharma offers route and process development, analytical characterisation, impurity control, and scale-up across both intermediates and active pharmaceutical ingredients, giving partners the option to consolidate their supply chain under a single regulatory umbrella.

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