Antibiotic intermediates
Enzyme solutions supporting key beta-lactam antibiotic intermediates, including 7-ADCA, 6-APA, 7-AVNA, 7-ACA and D-7-ACA.
Start a conversation ↗ Enzyme science, made practical
Enzyme solutions.
Antibiotic expertise.
We provide enzyme solutions for the penicillin and cephalosporin industries—from key pharmaceutical intermediates to the production of semisynthetic antibiotics.
Industry-focusedAntibiotic applications
Quality-mindedClear documentation
Globally connectedResponsive supply
01Identify
the challenge
the challenge
02Define
the solution
the solution
CWIEnzyme
solutions
solutions
Explore our expertiseScience, process and application
01Companyapproach↓ 02Enzyme
solutions↓ 03Enzyme
knowledge↓ 04Industry
impact↓
What we do
Enzyme expertise across
your antibiotic process.
Crawford Wisdom International provides enzyme solutions for manufacturers throughout the penicillin and cephalosporin value chain.
Our product range supports key antibiotic intermediates—including 7-ADCA, 6-APA, 7-AVNA, 7-ACA and D-7-ACA—and semisynthetic antibiotics such as amoxicillin, ampicillin, cefalexin, cefprozil, cefaclor and cefradine. We also support other pharmaceutical enzyme solutions.
Our capabilities
Built around your
development pathway.
Practical enzyme solutions for established antibiotic processes and new enzymatic applications.
Semisynthetic antibiotics
Enzymatic process support for amoxicillin, ampicillin, cefalexin, cefprozil, cefaclor and cefradine.
Explore support ↗Other pharmaceutical solutions
Responsive technical and product support for additional enzymatic processes and pharmaceutical applications.
Discuss supply ↗Where we add value
Focused on beta-lactam
antibiotic production.
We work with penicillin and cephalosporin manufacturers to support efficient enzyme-enabled processes, from core intermediates to finished antibiotic products.
01
7-ADCA · 6-APA · 7-AVNA
↗02
7-ACA · D-7-ACA
↗03
Amoxicillin · ampicillin
↗04
Cephalosporin antibiotics
↗05
Other pharmaceutical solutions
↗
CephalexinCefprozilCefaclorCefradine
Enzyme knowledge
From biological catalyst
to industrial process.
Enzymes are biological catalysts that accelerate specific reactions without being consumed by the reaction. Their selectivity can make them valuable tools for producing complex pharmaceutical intermediates and active ingredients.
What is an enzyme?
An enzyme binds a suitable substrate at its active site and lowers the energy needed for a reaction. Enzyme performance depends on factors including pH, temperature, substrate concentration, product concentration and the surrounding solvent system.
Pharmaceutical applications
Enzymes support selective hydrolysis, acylation, deacylation, chiral resolution and other biotransformations used in antibiotic intermediates, active pharmaceutical ingredients and speciality pharmaceutical products.
Penicillin G amidase
One enzyme, two useful directions.
Penicillin G amidase—also known as penicillin G acylase—hydrolyses the side-chain amide bond of penicillin G to produce 6-APA and phenylacetic acid. Under controlled synthesis conditions, acylase activity can also be used to attach a suitable side chain to a beta-lactam nucleus.
SubstratePenicillin G
H₂O→Penicillin G amidase
Core intermediate6-APA
+Side-chain productPhenylacetic acid
Acylase enzymes
Supporting penicillin and cephalosporin pathways
Acylases remove or transfer acyl groups. In cephalosporin processing, suitable acylase systems can support conversion of acylated intermediates toward 7-ACA. Enzyme choice must match the exact substrate: activity toward one intermediate does not guarantee efficient activity toward another.
Common process challenges
Where enzyme performance can be lost
Laboratory activity does not automatically translate into an efficient production process. Reaction conditions, enzyme lifetime and downstream recovery must be considered together.
Reaction products can shift pH, while excessive temperature or unsuitable pH can reduce enzyme activity and stability.
High substrate or product levels may inhibit activity. In synthesis reactions, competing hydrolysis can reduce the desired conversion.
With immobilised enzymes, diffusion through beads or supports can limit the rate even when the enzyme itself remains active.
Mechanical stress, impurities and repeated cycles can reduce activity, making enzyme stability and reuse validation important.
Enzyme selection should consider filtration, crystallisation, impurity control and product isolation—not reaction conversion alone.
We help evaluate enzyme selection, operating window, dosage, substrate feeding, immobilisation strategy and performance monitoring for the intended process.
Learning centre
Essential questions about industrial enzymes
Short explanations for technical, procurement and business teams evaluating an enzyme-enabled process.
Why use an enzyme instead of a conventional chemical route?+
Enzymes can offer high reaction and stereochemical selectivity under comparatively mild conditions. The best route depends on overall yield, raw materials, cycle time, downstream recovery, waste treatment and cost—not selectivity alone.
What controls enzyme activity?+
Important variables include pH, temperature, substrate and product concentration, ionic strength, solvent composition, mixing and reaction time. Each enzyme preparation has its own practical operating window.
What is an immobilised enzyme?+
An immobilised enzyme is attached to or contained within a solid support. This can simplify separation and enable reuse, although support chemistry, particle strength and internal diffusion can affect performance.
Can one acylase work for every substrate?+
No. Enzymes are substrate-selective. Activity observed with penicillin G or one cephalosporin intermediate cannot be assumed for a different nucleus, side chain or activated donor without testing.
What should be measured during scale-up?+
Teams commonly monitor conversion, selectivity, pH demand, temperature, mixing, substrate feed, impurity formation, enzyme activity retention, filtration behaviour and product recovery.
Commercial applications
Connecting enzyme science
with production goals.
Illustrative pathways showing where enzyme technology can support penicillin and cephalosporin manufacturing. The exact enzyme, substrate form and operating conditions must be evaluated for each process.
SubstratePenicillin G
Penicillin G amidase · H₂O⟶
Core6-APA
+Side chainPhenylacetic acid
6-APA
+Side-chain donor
PGA / acylase · controlled pH⟶
ProductsAmoxicillin
or Ampicillin
or Ampicillin
SubstrateAcylated cephalosporin intermediate
Substrate-specific acylase · H₂O⟶
Core7-ACA
or related nucleus
or related nucleus
7-ACA / 7-ADCA
+Suitable donor
Application-specific enzyme system⟶
ExamplesCephalexin · Cefaclor
Cefradine · Cefprozil
Cefradine · Cefprozil
These pathways are provided for general education and project discussion. They are not manufacturing instructions or guaranteed performance specifications.
Why enzyme-enabled processing
Addressing real
industry challenges.
Antibiotic manufacturing demands selectivity, process control and dependable output. The right enzyme solution can help manufacturers simplify difficult transformations and improve the overall process.
Higher selectivity
Enzymes can target specific bonds and reactions, helping reduce unwanted side reactions and supporting cleaner product profiles.
Milder conditions
Enzyme-enabled steps can operate under less severe temperatures and pH conditions than some conventional chemical routes.
Process efficiency
A well-matched enzyme can help simplify reaction steps, improve conversion and make downstream processing more manageable.
Reduced process burden
More selective reactions can help reduce by-products, solvent demand and waste-handling requirements across the process.
Consistent performance
Defined product specifications and application support help teams work toward repeatable results from evaluation through production.
Application support
We help connect enzyme selection with substrate, process conditions and production goals for antibiotic and other pharmaceutical applications.
Q
Quality is builtinto every conversation.
A dependable approach
Clarity at every
critical step.
In antibiotic manufacturing, consistent performance and clear specifications matter. We focus on responsive communication, transparent product information, and support aligned with each agreed enzyme application.
- ✓ Requirement-led product selection
- ✓ Specification and documentation support
- ✓ Responsive technical communication
Let's work together
Bring us your
enzyme challenge.
Tell us what you are working on. We’ll start with the science, understand the need, and explore a practical way forward.
info@cfwisdom.com ↗
Guangzhou, China