Evidence map›Paper›PMID 29979477›Full record

ArticleChemistry (Weinheim an der Bergstrasse, Germany)2018

Polymorphic Phase Transitions in Carbamazepine and 10,11-Dihydrocarbamazepine.

Alexander E Clout, Asma B M Buanz, Simon Gaisford, Gareth R Williams

Abstract read
In one paragraph

Article in Chemistry (Weinheim an der Bergstrasse, Germany), 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.

0numbers the graph read from it
0cells of the map it votes in
4citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

4 citing papers in PubMed.

  1. Article
  2. Article
  3. Article
  4. Polymorphic Phase Transitions in Carbamazepine and 10,11-Dihydrocarbamazepine.Chemistry (Weinheim an der Bergstrasse, Germany) · 2018
    Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

4 authors.

Alexander E CloutUCL School of Pharmacy, University College London, 29-39 Brunswick Square, London, WC1N 1AX, UK.
Asma B M BuanzUCL School of Pharmacy, University College London, 29-39 Brunswick Square, London, WC1N 1AX, UK.
Simon GaisfordUCL School of Pharmacy, University College London, 29-39 Brunswick Square, London, WC1N 1AX, UK.ORCID http://orcid.org/0000-0003-1000-3208
Gareth R WilliamsUCL School of Pharmacy, University College London, 29-39 Brunswick Square, London, WC1N 1AX, UK.ORCID http://orcid.org/0000-0002-3066-2860

Funding

Diamond Light Source EE10503 and EE12735Engineering and Physical Sciences Research Council EP/K03929/1University College London
6 · The paper itself

Abstract

Temperature-induced phase transitions in carbamazepine (CBZ) and 10,11-dihydrocarbamazepine (DHC) were studied by simultaneous differential scanning calorimetry-X-ray diffraction in this work. The transitions generally involve a transitional melt phase which is quickly followed by recrystallisation. The expansions of the unit cell as a function of temperature could be quantified and allow us to determine a directional order of stability in relation to the lattice constants. Dihydrocarbamazepine form II undergoes a conversion to form I by a localised melt phase. Carbamazepine (CBZ) form IV converts to form I at 182 °C, again by a localised intermediate melt phase. CBZ form II converted to form I at 119 °C by a pathway that appears to have included some melting, and form III underwent a part melt-recrystallisation and a part sublimation-recrystallisation to form I.

Indexed as

Phase TransitionCalorimetry, Differential ScanningCarbamazepineCrystallizationFreezingHydrogen BondingHydrophobic and Hydrophilic InteractionsMolecular StructurePolymerizationSolubilityTemperature10,11-dihydrocarbamazepineCarbamazepinehyphenated techniquespharmaceutical materialsphase transitionssynchrotron X-ray diffractionthermal analysis

Identifiers

PMID29979477
PMCPMC6175174

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.