Reference health

An improved colorimetric determination of amino acids with the use of ninhydrin

https://doi.org/10.1016/0003-2697(66)90057-1

8/8 checkable references clean · checked 2026-07-22

Every reference with a DOI in the deposited reference list resolved to a known work in Crossref or DataCite at the dated check, and none carried a retraction, withdrawal, or removal notice.

1 without a DOI — not checked. A reference deposited without a DOI is never matched by title or guessed at; it stays outside the checked set, and this line discloses that.

The 8 checked references that resolve

resolves10.1016/S0021-9258(18)51034-6

PHOTOMETRIC NINHYDRIN METHOD FOR USE IN THE CHROMATOGRAPHY OF AMINO ACIDS

resolves10.1016/S0021-9258(18)71428-2

A MODIFIED PHOTOMETRIC NINHYDRIN METHOD FOR THE ANALYSIS OF AMINO AND IMINO ACIDS

resolves10.1016/S0021-9258(18)71178-2

A MODIFIED NINHYDRIN REAGENT FOR THE PHOTOMETRIC DETERMINATION OF AMINO ACIDS AND RELATED COMPOUNDS

resolves10.1039/an9558000209

The determination of amino-acids with ninhydrin

resolves10.1021/ac60110a042

Colorimetric Ninhydrin Reaction for Measurement of α-Amino Nitrogen

resolves10.1248/yakushi1947.73.7_675

Studies on Ninhydrin Reaction. I

resolves10.1016/0003-9861(57)90241-2

A modified ninhydrin colorimetric analysis for amino acids

resolves10.1093/clinchem/9.5.573

A Modified Ninhydrin Colorimetric Method for the Determination of Plasma Alpha-Amino Nitrogen

The 1 reference without a DOI — listed, not checked

no DOI — not checked10.1016/0003-2697(66)90057-1_BIB9

What this badge says. CiteStamped means the CHECKABLE references of this work were clean at the dated check: each resolved to a known work in a public registry, and none carried a retraction notice at that time. It says nothing about the quality, findings, or importance of the work itself, and nothing about references deposited without a DOI.

checked 2026-07-22 — re-checked daily as this page is visited; titles and statuses come from Crossref and DataCite and are not part of the signed record

view as graph · paper page

Embed this badge

Both snippets point at the live badge image and link back to this page. The badge re-renders from the daily check, so an embed never goes stale by more than a day of visits.

<a href="https://citestamp.com/citestamped/10.1016/0003-2697(66)90057-1"><img src="https://citestamp.com/citestamped/10.1016/0003-2697(66)90057-1/badge.svg" alt="CiteStamped reference-health badge" width="460" height="64"></a>

[![CiteStamped reference-health badge](https://citestamp.com/citestamped/10.1016/0003-2697(66)90057-1/badge.svg)](https://citestamp.com/citestamped/10.1016/0003-2697(66)90057-1)