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222425-48-1

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222425-48-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 222425-48-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,2,4,2 and 5 respectively; the second part has 2 digits, 4 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 222425-48:
(8*2)+(7*2)+(6*2)+(5*4)+(4*2)+(3*5)+(2*4)+(1*8)=101
101 % 10 = 1
So 222425-48-1 is a valid CAS Registry Number.

222425-48-1Relevant articles and documents

Enantioselective synthesis of (-)-indolizidine 167B

Chalard, Pierre,Remuson, Roland,Gelas-Mialhe, Yvonne,Gramain, Jean-Claude,Canet, Isabelle

, p. 1661 - 1664 (1999)

The enantioselective total synthesis of (-)-indolizidine 167B is described. The key step is the intramolecular cyclization of the chiral N- acyliminium ion 6. Indolizidine 167B was obtained in 7 steps and 17% yield from ethyl (R)-3-aminohexanoate, with an

Isolation and Structure Determination of Lyngbyastatin 3, a Lyngbyastatin 1 Homologue from the Marine Cyanobacterium Lyngbya majuscula. Determination of the Configuration of the 4-Amino-2,2-dimethyl-3-oxopentanoic Acid Unit in Majusculamide C, Dolastatin 12, Lyngbyastatin 1, and Lyngbyastatin 3 from Cyanobacteria

Williams, Philip G.,Moore, Richard E.,Paul, Valerie J.

, p. 1356 - 1363 (2007/10/03)

The structure of lyngbyastatin 3 (1), including the configurations of the two unusual amino acid residues, viz., the 3-amino-2-methylhexanoic acid (Amha) and 4-amino-2,2-dimethyl-3-oxopentanoic acid units (Ibu), has been established by chemical degradation. Analysis of the cyanobacterial samples of lyngbyastatin 3 (1), lyngbyastatin 1 (2), and dolastatin 12 (3) demonstrated that they are mixtures of Ibu epimers [R (major) and S (minor)], whereas the structurally related majusculamide C (4) is a single diastereomer having an S-Ibu unit.

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