59905-21-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 59905-21-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,9,9,0 and 5 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 59905-21:
(7*5)+(6*9)+(5*9)+(4*0)+(3*5)+(2*2)+(1*1)=154
154 % 10 = 4
So 59905-21-4 is a valid CAS Registry Number.
59905-21-4Relevant articles and documents
The synthesis of amino acids by 1,3-dipolar cycloadditions of azomethine ylides
Kraus, George A.,Nagy, Jon O.
, p. 3537 - 3545 (2007/10/02)
Thiazolium ylides react with a variety of dipolarophiles to afford adducts. After filtration chromatography, a tricyclic adduct is obtained. The tricyclic adducts react with potassium t-butoxide/t-butanol to provide dihydropyrroles. The adducts also react