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2,3-trans-8,9-trans-9,10-cis-tetrahydro-2H,8H-pyrano<2,3-h>chromene is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

130245-33-9

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130245-33-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 130245-33-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,0,2,4 and 5 respectively; the second part has 2 digits, 3 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 130245-33:
(8*1)+(7*3)+(6*0)+(5*2)+(4*4)+(3*5)+(2*3)+(1*3)=79
79 % 10 = 9
So 130245-33-9 is a valid CAS Registry Number.

130245-33-9Downstream Products

130245-33-9Relevant academic research and scientific papers

THE FIRST NATURAL CONDENSED TANNINS WITH (-)-CATECHIN 'TERMINAL' UNITS

Steynberg, Petrus J.,Burger, Johann F.W.,Bezuidenhoudt, Barend C.B.,Steynberg, Jan P.,Dyk, Martha S. Van,Ferreira, Daneel

, p. 2059 - 2062 (1990)

The functionalized 2,3-trans-8,9-trans-9,10-cis-3,4,9,10-tetrahydro-2H,8H-pyranochromenes 4 and 6 represent the first naturally occurring condensed tannins with (2S,3R)-2,3-trans-(-)-catechin 'terminal' moieties; the structure of 4 is unequivocally confirmed by synthesis.

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