Press Room

Article / Sep 19, 2003

Particle Design, New Technologies for Better Crystals

CPhI 2003, 19 September 2003

Hovione for CPhI 2003

The service of an API manufacturer not only involves the development of the chemical process and the supply of high quality API, when and where required, but also paying close attention to those physical parameters which make up the necessary requisites for a successful formulation. Chemical skills must be complemented by a pharmaceutical culture. For a successful custom synthesis partnership it is imperative that the API contractor be both cognizant of the importance of having the correct particle size and morphology, and be able to develop a process that delivers consistently the required crystal form and size. This is key in many galenic forms; in the field of inhalation for instance it is absolutely critical; it can also be the source of many last-minute surprises and frustrations until the matter is well controlled.

Traditional know-how includes: expertise in controlled crystallisation, micronization and jet milling. These are skills that Hovione has used for decades in its plants to achieve the desired crystal form and consistent particle size. All of this needs to be backed up with analytical techniques, including laser diffractometry and impaction, used in a manufacturing scenario, to assure the necessary QC controls.

But technology moves on….

Hovione is pleased to announce it is installing a state of the art Spray Drying facility, capable of evaporating 35 to 90 Kg of water per hour under the most stringent cGMP conditions. The supplier of the Spray Drier, Niro A/S has designed this to the most advanced specifications. It is equipped with two atomizer systems (a rotary and co-current two-fluid nozzle) to deliver injectable grade APIs and is configured to be “cleaned-in-place” it discharges into a classified clean-room. This multipurpose unit was the result of a close collaboration with Niro and allows Hovione to produce dry solids in either powder, granulate or agglomerate form from liquid feedstocks such as solutions, emulsions and pumpable suspensions. This technology will enable continuous production, at low-cost and with a high degree of precision, over a wide range of particle sizes. The system meets explosion-proof requirements and can therefore spray-dry out of most organic solvents in a safe and compliant environment. Niro has described the unit as one of the most flexible and versatile GMP compliant spray-driers that they have ever built.

Continuing its programme to expand scientific know-how in advanced technologies, Hovione is actively developing expertise in other particle design techniques: Supercritical Crystallization and Sono-crystallization.

Supercritical crystallization offers a trouble-free separation of the product from the solvent and the capability to control the size and form of the crystals. The principle is based on replacing a conventional solvent with a supercritical fluid, which may act as a solvent or as an anti-solvent. This technique may be used to produce very small particles with narrow size distribution.

Sono-crystallization uses ultrasound to influence crystallization behaviour by promoting cavitations within the liquid media, which serve as nuclei for new crystals to form. Benefits can include improved crystal habit, purity and the ability to manipulate crystal-size distribution and powder flow characteristics. It also offers a useful and more controllable alternative to seeding.

Also in the Press Room

See All

International Pharmaceutical Industry journal speaks with Márcio Temtem, VP Strategic Business Management at Hovione, about how the company’s deep-rooted expertise in complex chemistry differentiates it within the CDMO landscape, enables seamless integration from drug substance to drug product, and supports partners in accelerating the development of high-potency APIs, advanced formulations, and next-generation therapeutic modalities. How does your complex chemistry expertise differentiate you from other CDMOs and how does it translate into helping partners accelerate the development of increasingly sophisticated APIs and formulations? Hovione has been associated with complex chemistry since its genesis. The company started by developing very tough chemistry on corticosteroids and antibiotics, which was an expertise that in the 90s we transferred into the contract manufacturing business.  Since then, Hovione has been exploring chemistry and its complexity in contract manufacturing through several angles. One is the ability to have assets across the globe and at different scales that allow the company to address various client needs. Another example of being able to tackle the complexity is having assets that can address molecules with different levels of potency. High potency is something that we offer in many of our facilities. Over the years, we have also tackled chemistries that are difficult to manage, like hydrogenations and cryogenic reactions. All these are part of a menu that we offer into the services. Hovione is always attentive to the client’s needs. The next step after chemistry, which typically tends to be particle engineering, either by means of crystallisation, controlled crystallisation, jet milling, or one of the technologies that we master most, spray drying. We keep attentive to these needs and we keep upgrading our toolbox with new hardware and new software. On the hardware side, we recently announced a partnership with Microinnova to embed continuous flow into our offering. On the software side, we have added micellar chemistry, a water-based approach to chemically synthesise active ingredients, addressing sustainability within the broader pharmaceutical industry. How does your manufacturing approach ensure seamless integration from drug substance to drug product both technically and operationally? Hovione has sites located in Europe, Asia, and North America, designed to offer clients a seamless, integrated approach across our network, not only in terms of processes, but also in terms of technologies. These facilities serve clients globally, although naturally some clients favour the local site. In terms of integration, Hovione offers the synthesis of the active ingredient, the manufacturing of intermediates such as amorphous solid dispersions, and the final drug product all in one site. Many companies claim to offer integrated services, but they do this across multiple sites. Hovione does the integration at one site, which reduces hand-offs, streamlines operations and ensures technical alignment. How do technologies such as spray drying and particle engineering, when combined with your chemistry expertise, enhance formulation performance and streamline scale-up timelines? Spray drying has become one of the most versatile technologies in our industry. It addresses challenges that both chemists and formulators face. Chemists are often concerned with problems such as yield, purity or ways of obtaining the right solid-state characteristics of the API, such as polymorphic form. Spray drying can provide a means of isolating materials that are very difficult to isolate by other methods. Examples of compounds that benefit from this include peptides and sugars. On the formulation side, spray drying addresses one of the biggest challenges in the industry: the poor solubility and consequently bioavailability of most of the new drugs. Seventy to ninety per cent of the new drugs in development are poorly soluble. Over the past 20 years, Hovione has developed a platform for making amorphous solid dispersions by spray drying. This platform allows new formulations to be developed with minimum quantities of API and in a short number of few weeks. The technology provides a seamless scale-up from grams to tons, gives clients line-of-sight to commercial production, and saves valuable API at early stages of development. It also allows integration between drug substance and drug product, linking synthesis, intermediate manufacture, and final product in a single site, which is unique in the industry. As molecules and processes become more complex, so too do supply chains. How does Hovione ensure consistency, quality, and regulatory confidence across global operations? Hovione maintains consistency, quality and regulatory confidence through a combination of global assets, standardised platforms and processes, and cross-functional expertise. Our sites are designed to serve global clients while maintaining local responsiveness. We offer high-potency capabilities and advanced particle engineering to address complex molecular challenges. By standardising technologies and processes across sites, Hovione ensures predictable outcomes and adherence to global regulatory requirements. This integrated approach supports reliable supply chains even as molecules and processes grow more complex. With the rise of HPAPIs, novel excipients, and emerging therapeutic modalities, how is Hovione evolving its chemistry and process capabilities to support the next generation of pharmaceutical innovation? We see a trend towards more complex molecules and increasing demand for high-potency compounds. Hovione continues to invest globally, expanding capabilities in high-potency APIs, novel excipients, emerging modalities, and emerging delivery routes such as inhalation or nasal delivery. Chemistry is used as a tool to enable these delivery routes, including synthesis, crystallisation to achieve the right polymorphic form, shape, and size, and optimisation of interactions with excipients. All this is interconnected with our platforms, and amorphous solid dispersions by spray drying, designed to improve bioavailability, the one with the most market credits. Our capabilities bridge drug substance and drug product development and allow us to serve commercial products of different volumes, from small batches to larger scales, all while handling high potency and complex chemistries.   Read the full article at International-Pharma.com  

Article

International Pharmaceutical Industry journal speaks with Márcio Temtem, VP Strategic Business Management at Hovione

Mar 01, 2026