52557-31-0 Usage
Hazard
A poison
Check Digit Verification of cas no
The CAS Registry Mumber 52557-31-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,2,5,5 and 7 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 52557-31:
(7*5)+(6*2)+(5*5)+(4*5)+(3*7)+(2*3)+(1*1)=120
120 % 10 = 0
So 52557-31-0 is a valid CAS Registry Number.
InChI:InChI=1/C20H32O6/c1-10-11-5-6-12-16(24)20(11,9-19(12,4)26)8-14(22)17(25)18(2,3)15(23)7-13(10)21/h11-16,21-24,26H,1,5-9H2,2-4H3/t11-,12+,13-,14-,15-,16+,19+,20?/m0/s1
52557-31-0Relevant articles and documents
Transformation of Grayanotoxin III to the 1,5-seco-Grayanotoxin Derivative, Grayanol B
Terai, Tadamasa,Kiyono, Koushi,Goto, Kunio
, p. 2711 - 2716 (2007/10/02)
Treatment of grayanotoxin (G) III with pyruvic acid in methanol gave the Δ1(10)-1,5-seco-G derivative.Photo-sensitized oxygenation of Δ1(10)-1,5-seco-G under UV light irradiation in methanol gave the 1(S)-perhydroxy- and 1(S)-hydroxy-1,5-seco-G derivatives.The IR and NMR data for Δ1(10)-1(S)-hydroxy-1,5-seco-G were identical with those of natural grayanol B described in the literature.