Are WR-2721 and WR-1065 the same substance?

Amifostine (WR-2721), CAS 20537-88-6, is an organophosphorothioate compound also known as WR-2721. WR-1065 is a distinct metabolite with a different CAS number, so the exact name and CAS should be used to avoid substitution.

Which chemical form should be confirmed for Amifostine?

Confirm the exact chemical form, salt or hydration state, specification, intended use and documentation needs. Amifostine may be offered in different physical forms, so the quotation should state the precise form and analytical basis.

Which specifications should be agreed for Amifostine supply?

Confirm offered physical form, assay and impurity requirements, residual solvents, water, related substances and any required reference or compendial standard. The product specification should correspond to the exact material and lot being quoted.

What compliance and documentation should be checked for regulated use?

For a regulated intended use, the buyer must confirm the exact material form and applicable requirements before procurement. Confirm local regulatory suitability and request current product-specific specifications, packaging details and document availability.

What appearance, solubility and stability should be expected for Amifostine?

Amifostine CAS 20537-88-6, formula C5H15N2O3PS and molecular weight 214.22, is normally a white solid or powder melting near 160-161 C, often with decomposition. It is soluble in water but unstable, especially in acidic aqueous solution, so confirm the offered form and refrigerated, moisture-protected handling conditions.

Amifostine (WR-2721) CAS 20537-88-6

Amifostine (WR-2721), CAS 20537-88-6, is an organophosphorothioate compound also known as WR-2721. For a regulated intended use, the buyer must confirm the exact material form and applicable requirements before procurement. Confirm exact chemical form, salt or hydration state, specification, intended use and documentation needs.

CAS: 20537-88-6
Synonyms: Amifostine; WR-2721; Ethiofos
Einecs: 633-786-4
Molecular Formula: C₅H₁₅N₂O₃PS
Grade: Confirm exact chemical form, salt or hydration state, specification, intended use and documentation needs.
Package: Confirm packaging compatible with the offered form and destination requirements.

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Product Description

Product name: Amifostine (WR-2721)

Synonyms: Amifostine; WR-2721; Ethiofos

CAS number: 20537-88-6

Molecular formula: C₅H₁₅N₂O₃PS

Molecular weight: 214.22

Chemical identity: Amifostine (WR-2721), CAS 20537-88-6, is an organophosphorothioate compound also known as WR-2721.

Identity boundary: WR-1065 is a distinct metabolite with a different CAS number.

Commercial form: Confirm the offered physical form in the current product-specific specification.

Grade and content: Confirm exact chemical form, salt or hydration state, specification, intended use and documentation needs.

Compliance status: Confirm local regulatory suitability for the intended use before procurement.

Documents: Request current product-specific specifications, packaging details and document availability.

Application boundary: For a regulated intended use, the buyer must confirm the exact material form and applicable requirements before procurement.

RFQ information: State the required form, quantity, intended use, destination and required documents in the RFQ.

FAQ - Technical & Supply Chain

Q:
Are WR-2721 and WR-1065 the same substance?

A: Amifostine (WR-2721), CAS 20537-88-6, is an organophosphorothioate compound also known as WR-2721. WR-1065 is a distinct metabolite with a different CAS number, so the exact name and CAS should be used to avoid substitution.
Q:
Which chemical form should be confirmed for Amifostine?

A: Confirm the exact chemical form, salt or hydration state, specification, intended use and documentation needs. Amifostine may be offered in different physical forms, so the quotation should state the precise form and analytical basis.
Q:
Which specifications should be agreed for Amifostine supply?

A: Confirm offered physical form, assay and impurity requirements, residual solvents, water, related substances and any required reference or compendial standard. The product specification should correspond to the exact material and lot being quoted.
Q:
What compliance and documentation should be checked for regulated use?

A: For a regulated intended use, the buyer must confirm the exact material form and applicable requirements before procurement. Confirm local regulatory suitability and request current product-specific specifications, packaging details and document availability.
Q:
What appearance, solubility and stability should be expected for Amifostine?

A: Amifostine CAS 20537-88-6, formula C5H15N2O3PS and molecular weight 214.22, is normally a white solid or powder melting near 160-161 C, often with decomposition. It is soluble in water but unstable, especially in acidic aqueous solution, so confirm the offered form and refrigerated, moisture-protected handling conditions.

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