Summary of Significant Accounting Policies (Policies)	9 Months Ended
Summary of Significant Accounting Policies (Policies)	Sep. 30, 2017
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation The accompanying unaudited financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America for interim financial statements and with Article 8 of Regulation S-X of the United States Securities and Exchange Commission (“SEC”). Accordingly, they do not contain all information and footnotes required by accounting principles generally accepted in the United States of America for annual financial statements. In the opinion of the Company’s management, the accompanying unaudited financial statements contain all the adjustments necessary (consisting only of normal recurring accruals) to present the financial position of the Company at September 30, 2017 and the results of operations and cash flows for the periods presented. The results of operations for the nine and three months ended September 30, 2017 are not necessarily indicative of the operating results for the full fiscal year or any future period. These unaudited financial statements should be read in conjunction with the financial statements and related notes thereto year ended December 31, 2016 filed with form S-1 on May 5, 2017.
Use of Estimates	Use of Estimates The preparation of financial statements in conformity with accounting principles generally accepted in the United States requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities of the financial statements, and the reported amounts of revenues and expenses during the reporting period. Estimated expenses were made by month based on actual salaries and the approximate overhead, G&A and fringe expenses associated as percentages of the salaries, in addition to the actual supplies expenses and accrued subcontracts expenses spread out over the course of each contract.
Development Stage Company	Development Stage Company The company is considered to be in the development stage as defined in ASC 915 “Development Stage Entities.” The company is devoting substantially all of its efforts to the development of its business plans. The company has elected to adopt Accounting Standards Update No. 2014-10, Development Stage Entities (Topic 915): Elimination of Certain Financial Reporting Requirements; and does not present or disclose inception-to-date information and other remaining disclosure requirements of Topic 915.
Property and Equipment	Property and Equipment Property and equipment are stated at cost. Equipment is depreciated using the straight-line method over the estimated useful lives of the assets. Repair and maintenance costs are expensed as incurred.
Research and Development Expenses	Research and Development Expenses Research and development expenses are charges to expense as incurred. Research and development expenses include, but are not limited to, product development, clinical and regulatory expenses, payroll and other personnel expenses, materials, supplies, and consulting costs. These expenses are assigned to the clinical project to develop ropidoxuridine in combination with radiation therapy. The SBIR contract covers much of the Phase I clinical trial in advanced GI malignancies. The research expenses are assigned to the clinical project to develop ropidoxuridine in combination with radiation therapy as a treatment for cancer. Costs that are not covered by the SBIR contract for performing the Phase I contract to determine commercialization feasibility included partial salary support of personnel and consultant to develop a commercialization plan. Costs that are not covered in the Phase II contract effort include business development and partial salary support. Research expenses related to new drug discovery include partial support of personnel, space, supplies and legal costs. These are preclinical studies and have led to discovery of the candidate lead ATM/HDACi bifunctional agent, an HDAC6 inhibitor and novel formulations of IUdR and IPdR. The Company has successfully competed for three SBIR contracts from the NIH to support research projects with potential for commercialization. The contract awards are fixed payment in response to quarterly Shuttle invoices and provide non-diluting funds that do not include a repayment obligation. Details on the three contracts follow: 1. Contract #HHSN261201400013C supports “Clinical development of IPdR for Radiosensitization” and consists of a “fast-track” award that includes $191,971 Phase I and $1,428,117 Phase II funding from 9/19/2014 through 9/18/2017. This contract includes a subcontract with Brown University, LifeSpan/Rhode Island Hospital for the performance of a Phase I clinical trial. The Phase I clinical trial of ropidoxuridine and radiation therapy is underway at Lifespan/Rhode Island Hospital. The subcontract sets forth the following technical objectives of the Phase I clinical trial: (i) activate the IPdR IND for the Phase I and PK clinical trial, (ii) obtain approvals for the Phase I and PK clinical protocol; develop efficacy protocols satisfying FDA “Orphan Drug” status and (iii) establish the in-house Company biomarker assays. The subcontract provides for the reimbursement of Lifespan/Rhode Island Hospital’s allowable costs. In accordance with the subcontract, if we receive positive results from the Phase1 clinical trial, we plan to advance to Phase 1b and Phase II clinical trials of using ropidoxuridine in conjunction with RT treatments of patients with brain tumors and soft tissue sarcomas. The subcontract provides for a total amount of $688,818 to be funded in connection with Phase I and Phase II. This contract has received a no cost extension (NCE) through February 3, 2018. 2. Contract #HHSN261201600027C supports “Predictive Biomarkers of prostate Cancer Patient Sensitivity for Radiation Late Effects.” This is a $299,502 Phase I award funding research from 9/19/2016 through 9/18/2017. This contract includes a subcontract with Georgetown University for use of Mass Spectrometry core facilities to analyze clinical samples. This contract was completed in its entirety and was closed out on 9/18/2017. 3. Contract #HHSN261600038C supports “Cell-based Models for Prostate Cancer Health Disparity Research.” This is a $224,687 Phase I award funding research from 9/19/2016 through 6/18/2017. This contract includes a subcontract with Georgetown University for use of a tissue culture core facility for growing human prostate cells from African-American donors. This contract was completed in its entirety and was closed out on 6/18/2017. In regards to the accounting treatment for reimbursements US GAAP provides limited guidance on the accounting for government grants received by for-profit companies. We understand that there is more than one acceptable alternative for the accounting treatment – a reduction of costs, a deferred credit to be amortized, revenue, or other income. Due to the terms of the contracts we have entered into the Company concluded that the reimbursements were more akin to a reduction of costs rather than any of the other alternatives to match the contract reimbursements on a systematic basis to the costs that the contract is intended to compensate. The Company has received a contract from the Department of Health and Human Services to assist with the clinical development of IPdR for radiosensitization. The Company recognizes the amounts received in regards to the contract at fair value when there is reasonable assurance that the contract amount will be received and it is probable that all attaching conditions will be complied with. The Company recognizes the amounts received in accordance with the contract as a reduction of research and development expenses over the periods necessary to match the contract on a systematic basis to the costs that it is intended to compensate. The Company recorded on the balance sheet as contract receivable upon meeting the criteria discussed above until cash is received. During the nine months ended September 30, 2017 and 2016, the Company recorded $733,582 and $409,069 in accordance with the contract and during the three months ended September 30, 2017 and 2016, the Company recorded $137,080 and $150,583 in accordance with the contract. which have been recorded as a reduction of research and development expense in the accompanying statement of operations.
Cash and cash equivalents	Cash and cash equivalents The Company considers all short-term highly liquid investments with an original maturity at the date of purchase of three months or less to be cash equivalents.
Fair Value of Financial Instruments	Fair Value of Financial Instruments The carrying amounts of financial instruments such as cash equivalents and accrued expenses approximate the related fair values due to the short-term maturities of these instruments. The Company invests its excess cash in financial instruments which are readily convertible into cash, such as money market funds and U.S. government securities. The fair value of financial assets and liabilities is measured under a three-tier fair value hierarchy as follows: Level 1 fair value is determined from observable, quoted prices in active markets for identical assets or liabilities. Level 2 fair value is determined from quoted prices for similar items in active markets or quoted prices for identical or similar items in markets that are not active. Level 3 fair value is determined using the entity’s own assumptions about the inputs that market participants would use in pricing an asset or liability.
Impairment of Long-Lived Assets	Impairment of Long-Lived Assets The Company reviews its long-lived assets for impairment whenever events or changes in business circumstances indicate that the carrying amount of the asset may not be fully recoverable. Recoverability of assets is measured by a comparison of the carrying amount of an asset to the estimated undiscounted cash flows expected to be generated by the asset. If the carrying amount of the asset exceeds its estimated future cash flows, an impairment charge will be recognized in the amount by which the carrying amount of the asset exceeds the fair value of the asset. There were no impairments of long-lived assets during years presented.
Income Taxes	Income Taxes Income taxes are accounted for in accordance with ASC 740, Income Taxes (“ASC 740”). The provision for, or benefit from, income taxes is calculated using the asset and liability method, under which deferred tax assets and liabilities are recorded based on the difference between the financial statement and tax basis of assets and liabilities using enacted tax rates in effect for the year in which the differences are expected to reverse. Deferred tax assets are evaluated on a quarterly basis to determine if adjustments to the valuation allowance are required. In accordance with ASC 740, we assess whether a valuation allowance should be established based on the consideration of all available evidence using a “more likely than not” standard with respect to whether deferred tax assets will be realized. The ultimate realization of deferred tax assets depends primarily on the generation of future taxable income during the periods in which the differences become deductible. The value of our deferred tax assets will depend on applicable income tax rates. Judgment is required in determining the future tax consequences of events that have been recognized in our consolidated financial statements and/or tax returns. Differences between anticipated and actual outcomes of these future tax consequences could have a material impact on our consolidated financial statements.
Convertible Instruments	Convertible Instruments The Company evaluates and account for conversion options embedded in convertible instruments in accordance with ASC 815 “Derivatives and Hedging Activities”. Applicable GAAP requires companies to bifurcate conversion options from their host instruments and account for them as free standing derivative financial instruments according to certain criteria. The criteria include circumstances in which (a) the economic characteristics and risks of the embedded derivative instrument are not clearly and closely related to the economic characteristics and risks of the host contract, (b) the hybrid instrument that embodies both the embedded derivative instrument and the host contract is not re-measured at fair value under other GAAP with changes in fair value reported in earnings as they occur and (c) a separate instrument with the same terms as the embedded derivative instrument would be considered a derivative instrument. The Company accounts for convertible instruments (when it has been determined that the embedded conversion options should not be bifurcated from their host instruments) as follows: The Company records when necessary, discounts to convertible notes for the intrinsic value of conversion options embedded in debt instruments based upon the differences between the fair value of the underlying common stock at the commitment date of the note transaction and the effective conversion price embedded in the note. Debt discounts under these arrangements are amortized over the term of the related debt to their stated date of redemption.

Shuttle Pharmaceuticals, Inc. 10-Q