143-57-7 Usage
Description
A further alkaloid isolated from Veratrum album, this base yields colourless
crystals from EtOH. It is laevorotatory with [α]27D - 44.1° (pyridine) or - 12.1°
(CHC13). Like the preceding base, it dissolves in H2S04 to give a blue colour.
The complex with maleic acid has been prepared as colourless crystals, m.p.
241.5°C; [α]20D - 37.6°. On alkaline hydrolysis, the alkaloid furnishes protoverine, two moles of acetic acid, one mole of (-)-methylbutyric acid and one
mole of (+)-2-hydroxy-2-methylbutyric acid.
Brand name
Protalba (Marion Merrell Dow).
References
Stoll, Seebeck., Helv. Chim. Acta, 36,718 (1953)
Check Digit Verification of cas no
The CAS Registry Mumber 143-57-7 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 1,4 and 3 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 143-57:
(5*1)+(4*4)+(3*3)+(2*5)+(1*7)=47
47 % 10 = 7
So 143-57-7 is a valid CAS Registry Number.
InChI:InChI=1/C41H63NO14/c1-10-20(4)34(46)55-33-28(45)27-23(18-42-17-19(3)12-13-25(42)38(27,9)49)24-16-39-32(40(24,33)50)30(53-22(6)44)29(52-21(5)43)31-36(39,7)15-14-26(41(31,51)56-39)54-35(47)37(8,48)11-2/h19-20,23-33,45,48-51H,10-18H2,1-9H3/t19-,20+,23-,24?,25-,26-,27+,28+,29-,30+,31-,32+,33-,36-,37?,38+,39-,40-,41-/m0/s1
