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Vasopressin: mass and molar amount

The molar mass of Vasopressin is 1084.2 g/mol. Everything on this page is computed from that figure, which was read from the public chemical record linked below.

Educational arithmetic only. Not medical advice and not a dosing protocol.

Used for a mass-to-mass conversion.
Pre-filled with the sourced figure for Vasopressin. Editable.

Fill in the fields above to see the answer.

Read this with the answer

This is educational arithmetic on figures entered by the reader. It is not medical advice, not a dosing protocol, and not a recommendation that anything be prepared, obtained or administered.

Nothing here states what quantity is appropriate for anyone, and there is no function in it that produces an amount to administer. A question about anyone’s health belongs with a licensed clinician who can examine the person asking.

Most compounds named here are research chemicals that are not approved by the FDA for human use. An exact calculation is not an accurate measurement: what is actually in a syringe depends on the preparation and the device, neither of which this page can see.

No qualified clinical reviewer is recorded against this site, and no credential is claimed anywhere on it. Full disclaimer.

Molar amount at 1084.2 g/mol. Exact arithmetic: n = m / M, rounded once for display.
MassNanomolesMicromoles
100 mcg92.230.0922
250 mcg230.580.2306
500 mcg461.170.4612
1 mg922.340.9223
2 mg1844.681.8447
5 mg4611.704.6117
10 mg9223.399.2234
Identity, as retrieved from the public chemical record named below. A field that was not sourced reads Unknown rather than being filled in.
FieldValue
Molar mass1084.2 g/mol
Molecular formulaC46H65N15O12S2
CAS number113-79-1
PubChem CID644077
Retrieved2026-10-09
Mass of one nanomole1.08420 mcg

Where these figures come from

Also recorded as arginine vasopressin, AVP, antidiuretic hormone, ADH. The molar mass, formula and identifiers above were read from the public chemical record (PubChem CID 644077) on 2026-10-09. That record is the authority, not this page: it can change after the date it was retrieved, and the linked copy is the current version.

Regulatory register finding

A query of the FDA Drugs@FDA application register on 2026-10-09 returned 10 application record(s) for this compound name (including ANDA211857, ANDA216963, ANDA212944, NDA212593, NDA217569, marketed as VASOPRESSIN, VASOPRESSIN IN DEXTROSE 5%, VASOPRESSIN IN SODIUM CHLORIDE 0.9%). Material supplied as a research chemical is not the subject of those applications and is not an FDA-approved product.

That sentence records the result of an automated query against a public application register on 2026-10-09. It is not legal advice and is not a jurisdiction-by-jurisdiction assessment of anything.

What a molar amount does and does not tell you

Dividing a mass by the molar mass gives a count of molecules in a convenient unit. That is the only figure on which two different compounds can be compared at all, because a milligram of a light molecule contains far more molecules than a milligram of a heavy one.

It stops there. Equal molar amounts are not equal potency, equal activity, equal binding or equal anything else, and nothing about how Vasopressin behaves follows from the arithmetic on this page.

The research record

This site does arithmetic and holds no research findings. What the published literature reports about Vasopressin, with citations and retrieval dates, is compiled on the research corpus: Vasopressin on Peptide Monographs.

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