88038-16-8

Basic information

• Product Name: C₅₂H₄₂O₁₈S
• Synonyms: C₅₂H₄₂O₁₈S
• CAS NO: 88038-16-8
• Molecular Weight: 986.961
• Mol File: 88038-16-8.mol
• Article Data: 3

Chemical Properties

• CAS DataBase Reference: C₅₂H₄₂O₁₈S(CAS DataBase Reference)
• NIST Chemistry Reference: C₅₂H₄₂O₁₈S(88038-16-8)
• EPA Substance Registry System: C₅₂H₄₂O₁₈S(88038-16-8)

Safety Data

• Hazardous Substances Data: 88038-16-8(Hazardous Substances Data)

Upstream product

• 97233-47-1 cinnamtannin D₂ 
• 100-53-8 phenylmethanethiol 
• 88038-12-4 Cinnamtannin B₁ 

Downstream Products

• 114613-62-6 epicatechin-(4β->b6)-epicatechin-(4β->8, 2β->O->7)-epicatechin 

Relevant articles and documents

Tannins and Related Compounds. LIX. Aesculitannins, Novel Proanthocyanidins with Doubly-Bonded Structures from Aesculus hippocastanum L.

A chemical examination of the seed shells of Aesculus hyppocastanum L.has led to the isolation of proanthocyanidins A-6 (10) and A-7 (11), and aesculitannins A (12), B (13), C (14), D (15), E (16), F (17) and G (18).On the basis of chemical and spectroscopic evidence, proanthocyanidins A-6 (10) and A-7 (11) have been determined to be A-type dimers each possessing a C-4, C-6 interflavanoid linkage, while aesculitannins A (12), B (13), C (14), D (15), E (16), F (17) and G (18) have been characterized as oligomeric proanthocyanidins possessing A-type unit(s) in each molecule.In addition, the presence of (-)-epicatechin (1), proanthocyanidins B-5 (3), A-2 (4), A-4 (5) and C-1 (6), epicatechin-(4β->6)-epicatechin-(4β->6)-epicatechin (7), and cinnamtannins B1 (8) and B2 (9) was also demonstrated Keywords---Aesculus hippocastanum; Hippocastanaceae; aesculitannin; doubly-bonded proanthocyanidin; procyanidin; condensed tannin; flavan-3-ol; thiolytic degradation; epimerization; hydrogen peroxide oxidation

Tannins and Related Compounds. Part 13. Isolation and Structures of Trimeric, Tetrameric, and Pentameric Proanthicyanidins from Cinnamon

A proanthocyanidin trimer, two tetramers, and a pentamer have been isolated in their free phenolic forms from cinnamon, the bark of Cinnamomum zeylanicum (Lauraceae).Partial acid-catalysed degradation of these tannins with phenylmethanethiol, in conjunction with 1H- and 13C-n.m.r. analysis, has unequivocally established their structures as epicatechin-(4β->8, 2β->7)epicatechin-(4α->8)-epicatechin (5); epicatechin-(4β->8)epicatechin-(4β->8, 2β->7)-epicatechin-(4α->8)-epicatechin (6); epicatechin-(4β->6)-epicatechin-(4β->8, 2β->7)-epicatechin-(4α->8)-epicatechin (7); and epicatechin-(4β->8)-epicatechin-(4β->8)epicatechin-(4β->8, 2β->7)-epicatechin-(4α->8)-epicatechin (8).