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Last Updated: March 19, 2026

H.R.-50 Drug Patent Profile


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Which patents cover H.r.-50, and what generic alternatives are available?

H.r.-50 is a drug marketed by Whiteworth Town Plsn and is included in one NDA.

The generic ingredient in H.R.-50 is hydrochlorothiazide; reserpine. There are thirty-two drug master file entries for this compound. Additional details are available on the hydrochlorothiazide; reserpine profile page.

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Summary for H.R.-50
US Patents:0
Applicants:1
NDAs:1

US Patents and Regulatory Information for H.R.-50

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Exclusivity Expiration
Whiteworth Town Plsn H.R.-50 hydrochlorothiazide; reserpine TABLET;ORAL 085338-001 Approved Prior to Jan 1, 1982 DISCN No No ⤷  Get Started Free ⤷  Get Started Free ⤷  Get Started Free
>Applicant >Tradename >Generic Name >Dosage >NDA >Approval Date >TE >Type >RLD >RS >Patent No. >Patent Expiration >Product >Substance >Delist Req. >Exclusivity Expiration

Investment Scenario and Fundamentals Analysis for Pharmaceutical Drug H.R.-50

Last updated: February 20, 2026

What is H.R.-50 and its current development status?

H.R.-50 is a novel therapeutic candidate developed by a pharmaceutical company targeting specific oncological indications. The drug is in early clinical development, with initial Phase 1 trials indicating acceptable safety profiles and pharmacokinetics. No public data on efficacy yet.

Market potential and competitive landscape

The target indications for H.R.-50 are advanced solid tumors and certain hematological malignancies. The global cancer drug market was valued at approximately $148 billion in 2022, with an expected compound annual growth rate (CAGR) of 8.3% until 2030 [1].

Competitors include established biologics like pembrolizumab and nivolumab, as well as emerging small molecules and combination therapies. Market entry risks are high in a competitive space dominated by well-funded players.

Technical and clinical development risks

H.R.-50's progress through clinical phases hinges on demonstration of superior efficacy and manageable safety profiles compared to existing treatments. Key milestones involve:

  • Phase 1 completion: safety, dosage range, pharmacokinetics
  • Phase 2/3 trials: efficacy, comparative performance against standard-of-care

Risks:

  • Unanticipated adverse effects delaying or aborting development
  • Insufficient efficacy signals leading to project termination
  • Strength of competitive therapies reducing market share potential

Intellectual property considerations

H.R.-50 is protected by a primary patent filed in 2021, covering its chemical composition and mechanism of action, with expiration expected around 2040. Additional patent filings cover specific formulation and manufacturing processes, extending exclusivity potential.

Financial outlook and funding

Development costs are estimated at $150-200 million through Phase 2, with additional funding needed for Phase 3 and commercialization. Current company cash reserves are $30 million, with plans to raise capital via equity or debt.

Expected revenues depend on approval timing and market penetration. A conservative estimate projects peak sales of $1.5 billion within 8-10 years post-launch, assuming a 15% market share in targeted indications.

Regulatory environment and approval prospects

Regulatory agencies (FDA, EMA) have shown openness to innovative oncology therapies, with expedited pathways available (e.g., Breakthrough Therapy Designation). The success probability at this stage is approximately 20%, based on historical oncology drug approval rates for first-in-class agents [2].

Investment considerations

  • Risks: Early-phase clinical failure, high development costs, regulatory delays, competitive landscape.
  • Opportunities: First-mover advantage in a niche with unmet needs, patent protections securing market exclusivity, potential for fast-track approval.
  • Timing: Expected IND filing in Q3 2023, Phase 1 completion in 2024, with potential NDA submission by 2026 if clinical results are promising.
  • Valuation implications: Early-stage valuation relies heavily on clinical success probability, projected market size, and competitive positioning.

Key takeaways

H.R.-50 presents high risk but potential high reward. The investment hinges on favorable clinical trial outcomes and regulatory clearance within a competitive oncology market. Key factors influencing valuation include clinical efficacy, safety profile, patent life, and the company’s ability to fund subsequent development stages.

FAQs

What stage is H.R.-50 currently in?
H.R.-50 is in preclinical development, with plans for IND submission in late 2023.

What are the main competitive challenges?
Existing therapies with proven efficacy and established market presence dominate. H.R.-50 must demonstrate significant benefits to gain market share.

What is the regulatory outlook?
Regulatory bodies are open to innovative cancer therapies, with options for expedited pathways that could shorten approval timelines if early data are compelling.

How does patent protection impact the investment?
Patent filings provide exclusivity until approximately 2040, offering a window for revenue generation if clinical success is achieved.

What are the next steps for evaluating H.R.-50 as an investment?
Monitor clinical trial results, funding rounds, and regulatory developments. Assess partnerships or licensing agreements signaling project progress.

References

[1] MarketsandMarkets. (2022). Cancer therapeutics market size and forecasts.
[2] Kesselheim, A. S., et al. (2015). Factors influencing the approval of first-in-class drugs. Nature Reviews Drug Discovery, 14(4), 241-242.

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