Isoflex
Isoflex is a privately held U.S. manufacturer and global supplier of stable isotopes and select radioisotopes, serving universities, research labs, medical and pharmaceutical buyers, and industrial customers across science, medicine, and nuclear applications since 1996.
- Company typePrivate
- Founded1996
- HeadquartersSan Francisco, United States
- Headcount11–50
- GTM typeB2B
- OfferingHardware or Manufacturing
What Isoflex does
Isoflex (legal name: ISOFLEX USA) is a privately held, U.S.-headquartered manufacturer and global supplier of stable isotopes and select radioisotopes serving scientific, medical, and industrial customers. Founded in 1996 and operating with 11-50 employees out of San Francisco, the company supplies an extensive catalog of enriched stable isotopes (across elements such as Calcium, Chromium, Germanium, Iron, Krypton, Lead, Mercury, Potassium, Silicon, Sulfur, Molybdenum, Cadmium, Tin, and others) in multiple chemical forms — metal/elemental, oxide, chloride, carbonate, as well as specialty halides and oxo-acid salts produced via custom synthesis. The firm also supplies select radioisotopes (notably Iridium-192 and Selenium-75), specialty isotopes including Helium-3, Oxygen-18, Iron-57 and Nickel-64, nuclear-grade products (Nuclear Grade DZA, DZO pellets and powder, Lithium-7), and a molecular imaging product line covering PET-relevant isotopes and ancillary consumables (sterile vials, precursors, reagent kits, purification cartridges, cassettes, radiation shielding). Affiliate ISOFLEX Radioactive LLC distributes RITVERC JSC radionuclide and Mössbauer sources, extending the radioactive product footprint across 50+ countries.
The business runs a quote-based B2B sales model: customers — universities and research laboratories (for metabolic studies, Mössbauer spectroscopy, isotope geochemistry, high-energy accelerator research, rare isotope beams, and neutrino detectors), medical and pharmaceutical buyers (cardiology, oncology, pulmonology, neurology, and pharmaceutical tracers/precursors for radioisotope production), and industrial users (atomic clock crystals, laser production, nuclear reactor water chemistry additives, industrial gases) — request quotes for specific isotope type, enrichment level, chemical form, and quantity. Fulfillment is global with same-day shipment available for in-stock items. Revenue is generated through one-time product sales with no recurring SaaS or license component disclosed. No public pricing is listed; pricing depends on isotope rarity, enrichment, chemical form, and volume. The firm holds no disclosed patents, certifications, or regulatory actions in the available data, and operates without external fundraising history.
The go-to-market is sales-led through the company website (which features an interactive periodic table, per-isotope product pages, and quote-request forms) and direct sales, with no evidence of marketing automation, channel partners, or distributor agreements beyond the RITVERC relationship. No M&A, leadership changes, or restructuring events are recorded. The overall posture is that of an established, niche specialty-chemical supplier with a long operating history, modest headcount, a diversified vertical mix, and a recent pivot toward higher-value medical imaging and recycling-adjacent offerings — but with limited public financial disclosure.
Isoflex firmographics
Firmographics- Name
- Isoflex
- Legal name
- ISOFLEX USA
- Website
- https://isoflex.com
- Company type
- Private
- Founded year
- 1996
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- Isoflex is a privately held U.S. manufacturer and global supplier of stable isotopes and select radioisotopes, serving universities, research labs, medical and pharmaceutical buyers, and industrial customers across science, medicine, and nuclear applications since 1996.
- Ownership category
- akta.pro rank
Isoflex industry classification
Industry- Product category
- Stable Isotopes and Radioisotopes
- NAICS
- Other Basic Inorganic Chemical Manufacturing (325180), In-Vitro Diagnostic Substance Manufacturing (325413)
- SIC
- Industrial Inorganic Chemicals (2810), In Vitro & In Vivo Diagnostic Substances (2835)
- akta.pro primary industry
- Industrial Isotope Production & Supply (Co-60, Ir-192, Cs-137, Am-241, etc.) (EUAKAIAB)
- akta.pro secondary industries
- Medical Radioisotope Production (Reactor/Cyclotron, Mo-99/Tc-99m, I-131, Lu-177, etc.) (EUAKAIAA), Sealed Source Manufacturing, Encapsulation & Recycling/Take-Back (Source lifecycle management) (EUAKAIAI), Radiopharmaceutical Manufacturing & CDMO (Synthesis, GMP, Packaging, QA/QC) (EUAKAIAC)
Keywords
Where Isoflex is headquartered
LocationHeadquarters
- HQ city
- San Francisco
- HQ country
- United States
- HQ region
- North America
Offices1 record
Markets served
Isoflex business model
Business model- GTM type
- B2B
- Offering type
- Hardware or Manufacturing
- Cost components
- Operations, Supply Chain, Personnel, Technology or R&D, Marketing or Sales, Infrastructure
Revenue model
- Isotope Product Sales: ISOFLEX generates revenue through the sale of stable isotopes and select radioisotopes in various chemical forms including metals, oxides, chlorides, carbonates, and specialty compounds. Products are sold to universities, research laboratories, pharmaceutical companies, and industrial customers worldwide.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Other | Pay-as-you-go | Custom isotope quote requests based on specific customer requirements |
Go-to-market motion1 record
Distribution channels2 records
Marketing channels2 records
Isoflex product offering
Product offeringCore offering
Isoflex manufactures and globally supplies enriched stable isotopes and select radioisotopes in multiple chemical forms (metal/elemental, oxide, chloride, carbonate, metal halides, and oxo-acid salts) for use in scientific research, medical imaging and therapeutics, and industrial applications. The company also provides custom synthesis services for isotopically-enriched compounds, molecular imaging products and supplies, and specialty nuclear-grade materials (DZA, DZO pellets/powder, Lithium-7), with worldwide shipping and same-day shipment for in-stock items.
Product overview
ISOFLEX is a premier manufacturer and global supplier of stable isotopes and select radioisotopes, operating since 1996. The company offers a comprehensive portfolio of isotope products across three main categories: stable isotopes (including elements like Calcium, Chromium, Germanium, Iron, Krypton, Lead, Mercury, Potassium, Silicon, Sulfur, Molybdenum, Cadmium, Tin, and others in various chemical forms), radioisotopes (Iridium-192, Selenium-75), and specialty nuclear products (Nuclear Grade DZA, DZO pellets/powder, Lithium-7). Additional offerings include molecular imaging products for medical diagnostics and custom synthesis services for producing isotopically-enriched compounds. The company operates globally with same-day shipment capability and has established a partnership with RITVERC for distributing additional radionuclide sources including Mossbauer sources and various radioactive isotopes.
Differentiator
Problem solved
Functional benefit
Products and services
- Stable Isotopes ISOFLEX's primary product line, supplying high-quality enriched stable isotopes to universities, research laboratories, and industrial customers worldwide for metabolic studies, Mössbauer spectroscopy, isotope geochemistry, high-energy accelerator research, rare isotope beams, neutrino detectors, and other academic and commercial applications. The catalog spans elements such as Calcium, Chromium, Germanium, Iron, Krypton, Lead, Mercury, Potassium, Silicon, Sulfur, Molybdenum, Cadmium, Tin, and many others in various enrichment levels.
- Radioisotopes Select radioisotope products including Iridium-192 and Selenium-75 supplied by ISOFLEX for industrial applications such as non-destructive testing and medical imaging, with additional radioactive sources (Mössbauer sources, Ba-133, Cs-137, Co-57, Co-60, Eu-152, Na-22, Y-88, Zn-65) distributed through affiliate ISOFLEX Radioactive LLC.
- Helium-3 Specialty isotope supplied for industrial and high-technology applications including laser production and other uses requiring enriched Helium-3.
- Oxygen-18 Specialty isotope supplied for medical imaging applications and as a molecular imaging product for PET-related uses.
- Oxygen-18 Recycling Service for recycling Oxygen-18 to support sustainable reuse of the isotope by customers using it in medical imaging and research applications.
- Iron-57 Specialty isotope supplied for Mössbauer spectroscopy and other research applications.
- Nickel-64 Specialty isotope supplied for molecular imaging and research applications, and offered as a molecular imaging product.
- Nuclear Grade DZA (Depleted Zinc Acetate) Nuclear-grade depleted zinc acetate supplied for nuclear reactor water chemistry additives and nuclear industry applications.
- Nuclear Grade DZO Pellets Nuclear-grade depleted zinc oxide in pellet form supplied for nuclear reactor applications and water chemistry.
- Nuclear Grade DZO Powder Nuclear-grade depleted zinc oxide in powder form supplied for nuclear reactor water chemistry.
- Lithium-7 Lithium-7 isotope supplied for nuclear industry applications.
- Molecular Imaging Products Isotopes and related supplies for molecular imaging, including O-18, Ni-64, Te-124, Cd-112, Zn-68, Xe-124, Tl-203, Se-76, Sr-86, plus sterile vials, sterile vacuum vials, precursors and reference standards, reagent kits, purification cartridges and column sets, cassettes, radiation shielding, and complete solution packages for synthesis modules.
- Synthesis Services Custom synthesis services for producing isotopically-enriched compounds in various chemical forms, including metal halides (fluorides, chlorides, bromides, iodides) and oxo-acid salts (carbonates, nitrates, phosphates, sulphates), supplied to customers with specific chemical-form and purity requirements.
Companies that use Isoflex
Customer profileNamed customers1 record
Segments3 records
Ideal customer profiles3 records
Isoflex technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature1 record
Isoflex partnerships and signals
Strategic signalPartnerships
One partnership is on record.
- RITVERC JSCcoreISOFLEX USA announced a partnership with RITVERC JSC, a developer, manufacturer and supplier of radionuclide sources, Mössbauer sources, reference sources and solutions serving customers in more than 50 countries. RITVERC sources are used in industry, medicine, and scientific research. ISOFLEX Radioactive LLC is a proud distributor of RITVERC sources.
Scale indicators2 records
Recent moves5 records
Expansion highlights5 records
Isoflex competitors and assessment
Company assessmentDirect peers
- Cambridge Isotope Laboratories: Cambridge Isotope Laboratories (CIL) is the largest global manufacturer and supplier of stable isotopes, including enriched stable isotopes and labeled compounds, serving research, medical, and industrial customers — directly overlapping Isoflex's core stable isotope catalog and customer base.
- Trace Sciences International: Trace Sciences International manufactures and supplies enriched stable isotopes in elemental, oxide, and other chemical forms to research and industrial customers — directly competing with Isoflex's stable isotope offering and chemical-form flexibility.
- IsoSciences: IsoSciences specializes in stable isotope-labeled compounds and custom synthesis for pharmaceutical and research customers, mirroring Isoflex's synthesis services and enriched compound catalog.
Broad incumbents
- Sigma-Aldrich (MilliporeSigma): MilliporeSigma distributes a broad catalog of stable isotope-labeled compounds, reference standards, and research chemicals alongside its wider life-science portfolio, competing with Isoflex on research-channel stable isotope SKUs.
- Nordion (Sotera Health): Nordion is a major supplier of medical isotopes (Co-60, Mo-99/Tc-99m) and radiation sterilization services, operating as a large incumbent in the radioisotope supply chain that overlaps with Isoflex's radioisotope and medical isotope customers.
- Curium Pharma: Curium is one of the largest nuclear medicine companies, manufacturing and distributing SPECT, PET, and therapeutic radioisotopes — competing with Isoflex on the medical/radiopharmaceutical side of the isotope business.
- Eckert & Ziegler Strahlen- und Medizintechnik: Eckert & Ziegler supplies industrial and medical radioisotopes, radiation sources, and radiopharmaceutical components, overlapping with Isoflex's radioisotope and sealed source product categories.
Emerging players
- ITM Isotope Technologies Munich: ITM produces medical radioisotopes (Lu-177, Y-90) and radionuclide generators for targeted radionuclide therapy, representing an emerging player in the radioisotope category where Isoflex also competes with select products.
Others
- National Isotope Development Center (US DOE): The NIDC coordinates production and distribution of stable and radioactive isotopes from US Department of Energy facilities, serving as a key ecosystem supplier and competitor to private suppliers like Isoflex for research-grade isotopes.
Regional players
- RITVERC JSC: RITVERC is a Russian manufacturer of sealed radionuclide and Mössbauer sources serving 50+ countries and a strategic partner of Isoflex; it is a regional source manufacturer whose products Isoflex distributes in the US via ISOFLEX Radioactive LLC.
Market position
Strengths5 records
Weaknesses4 records
Competitive moat4 records
Key risks5 records
Key highlights7 records
Customer concentration
Isoflex social profiles
Digital presenceIsoflex financial estimates
Financial estimateRevenue estimate
Valuation estimate
Isoflex leadership team
Management profileNumber of profiles
Isoflex subsidiaries and ownership
Company hierarchySubsidiaries1 record
Isoflex funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Isoflex M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Isoflex
What does Isoflex do?
Isoflex manufactures and globally supplies enriched stable isotopes and select radioisotopes in multiple chemical forms (metal/elemental, oxide, chloride, carbonate, metal halides, and oxo-acid salts) for use in scientific research, medical imaging and therapeutics, and industrial applications. The company also provides custom synthesis services for isotopically-enriched compounds, molecular imaging products and supplies, and specialty nuclear-grade materials (DZA, DZO pellets/powder, Lithium-7), with worldwide shipping and same-day shipment for in-stock items.
Is Isoflex a public or private company?
Isoflex is a private company. It is classified as unknown and is currently operating.
When was Isoflex founded?
Isoflex was founded in 1996. It employs 11 to 50 people.
Where is Isoflex based?
Isoflex is headquartered in San Francisco, United States, in the North America region.
How does Isoflex make money?
One revenue line is on record: isotope Product Sales.
Who are Isoflex's main competitors?
Direct peers on record are Cambridge Isotope Laboratories, Trace Sciences International and IsoSciences. Broad incumbents are Sigma-Aldrich (MilliporeSigma), Nordion (Sotera Health), Curium Pharma and Eckert & Ziegler Strahlen- und Medizintechnik. ITM Isotope Technologies Munich is listed as an emerging player. National Isotope Development Center (US DOE) is listed as an others. RITVERC JSC is listed as a regional player.
Does Isoflex have an API?
No public API is recorded for Isoflex.
What industry is Isoflex in?
Isoflex's product category is Stable Isotopes and Radioisotopes. Its primary akta.pro industry code is EUAKAIAB, Industrial Isotope Production & Supply (Co-60, Ir-192, Cs-137, Am-241, etc.), with a secondary code of EUAKAIAA, Medical Radioisotope Production (Reactor/Cyclotron, Mo-99/Tc-99m, I-131, Lu-177, etc.). Its NAICS code is 325180 and its SIC code is 2810.