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226699-19-0

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226699-19-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 226699-19-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,6,6,9 and 9 respectively; the second part has 2 digits, 1 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 226699-19:
(8*2)+(7*2)+(6*6)+(5*6)+(4*9)+(3*9)+(2*1)+(1*9)=170
170 % 10 = 0
So 226699-19-0 is a valid CAS Registry Number.

226699-19-0Downstream Products

226699-19-0Relevant articles and documents

A stereocontrolled synthesis of a new class of 3,4,5,6- tetrahydropyrimidine-based chiral amino acids

Zamri, Adel,Sirockin, Finton,Abdallah, Mohamed A.

, p. 5157 - 5170 (2007/10/03)

The stereocontrolled synthesis of seven 2-substituted-4-carboxy-3,4,5,6- tetrahydropyrimidines bearing either one chiral center at C-4 or two chiral centers at C-4 and C-8 was performed by condensation of (S)- or (R)- 2,4- diaminobutyric acid (Daba) with iminoethers derived from glycine, (S)- and (R)- serine, (S)- and (R)- tyrosine. Under the conditions reported, epimerization was always completely prevented at the C-4 center, whereas at the C-8 center, it was completely avoided in the case of tyrosine derivatives and considerably diminished for the serine derivatives.

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