Name: 4′-Hydroxyacetophenone. Kasprzok, L; Fabbri, D; Rombola, AG; Rovetta, T; Malagodi, M in [Kasprzok, Lisa] Warren Lasch Conservat Ctr, 1250 Supply St, N Charleston, SC 29405 USA; [Fabbri, Daniele; Rombola, Alessandro G.] Univ Bologna, Dept Chem Giacomo Ciamician, Campus Ravenna,Via St Alberto 163, I-48123 Ravenna, Italy; [Rovetta, Tommaso; Malagodi, Marco] Univ Pavia, Arvedi Lab Noninvas Diagnost, CISRiC, Via BellAspa 3, I-26100 Cremona, Italy; [Malagodi, Marco] Univ Pavia, Dept Musicol & Cultural Heritage, Corso Garibaldi 178, I-26100 Cremona, Italy published Identification of organic materials in historical stringed instruments by offline analytical pyrolysis solid-phase microextraction with on-fiber silylation and gas chromatography-mass spectrometry in 2020.0, Cited 54.0. The Name is 4′-Hydroxyacetophenone. Through research, I have a further understanding and discovery of 99-93-4.
Historical stringed musical instruments are a unique class of cultural heritage objects. Crafted during the 16th-18th centuries, these instruments remain somewhat mysterious. Due to the absence of written historical documents of traditional varnish recipes, their chemical characterization is the only way to recover the lost ‘secret’ of the Cremonese stringed instrument maker Antonio Stradivari and his contemporaries, whose traditions had been lost by 1800. Pyrolysis combined with gas chromatography-mass spectrometry (GC-MS) using solid-phase microextraction (SPME) followed by on-fiber silylation (Py SPME Syl GC-MS) was applied to a large collection of standards to evaluate its validity for compositional analysis and material identification of historical stringed instrument varnishes. The standards included pure resins (colophony, amber, mastic, sandarac, elemi), different types of shellac, as well as colorants or additives such as madder, dragon’s blood, and Aloe vera powder, and other materials (propolis, beeswax). The aim was to obtain an extensive collection of GC-MS data of silylated pyrolysis products useful for the characterization of the finishes of these unique historical objects. A set of distinct pyrolysis patterns and products were chosen as specific molecular markers for each standard. The method was applied to instrument varnish samples from Stainer, Baioni, Amati, Guarneri, Gasparo da Salo, Maggini, and Guadagnini instruments. The method was shown to be effective for the identification of oxidized lignin, drying oils, and diterpenic resins. In the case of dragon’s blood, madder, shellac, and propolis new markers were identified, suggesting their presence in some instrument varnishes. The identification of proteins and madder appeared most challenging.
Name: 4′-Hydroxyacetophenone. Welcome to talk about 99-93-4, If you have any questions, you can contact Kasprzok, L; Fabbri, D; Rombola, AG; Rovetta, T; Malagodi, M or send Email.
Reference:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
,Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles