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Heptamethyl-hamamelitannin is a naturally occurring organic compound found in the witch hazel plant (Hamamelis virginiana). It is a tannoid, a type of polyphenol, and is characterized by its ability to bind to proteins and other organic molecules, which gives it astringent properties. Heptamethyl-hamamelitannin is known for its potential anti-inflammatory and antioxidant activities, which are being studied for their potential benefits in skincare and other applications. Heptamethyl-hamamelitannin is one of several tannins present in witch hazel, and it contributes to the plant's traditional use in topical applications for soothing and tightening the skin.

7533-16-6

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7533-16-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 7533-16-6 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 7,5,3 and 3 respectively; the second part has 2 digits, 1 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 7533-16:
(6*7)+(5*5)+(4*3)+(3*3)+(2*1)+(1*6)=96
96 % 10 = 6
So 7533-16-6 is a valid CAS Registry Number.

7533-16-6Relevant academic research and scientific papers

Tannins and Related Compounds. XVII. Galloylhamameloses from Castanea crenata L. and Sanguisorba officinalis L.

Nonaka, Gen-ichiro,Ishimaru, Kanji,Tanaka, Takashi,Nishioka, Itsuo

, p. 483 - 489 (2007/10/02)

Together with 2',5-di-O-galloylhamamelose (I), which had previously been designated as hamamelitannin, five new galloylhamameloses (II-VI) were isolated from the bark of Castanea crenata L. (Fagaceae).On the basis of chemical and spectroscopic evidence, their structures were characterized as 2',3,5,tri-O-galloyl- (II), 5-O-galloyl- (III), 1,2'-di-O-galloyl-(IV), 1,2',5-tri-O-galloyl-(V) and 1,2',3,5-tetra-O-galloyl-D-hamamelofuranose (VI).In addition, the occurance of two galloylhamameloses (I and II) in the underground part of Sanguisorba officinalis L. (Rosaceae) was demonstrated.Keywords - Castanea crenata; Fagaceae; Sanguisorba officinalis; Rosaceae; galloylhamamelose; tannin; deutrium-induced differential isotope shift, 13C-NMR; 1H-NMR

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