421567-91-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 421567-91-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,2,1,5,6 and 7 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 421567-91:
(8*4)+(7*2)+(6*1)+(5*5)+(4*6)+(3*7)+(2*9)+(1*1)=141
141 % 10 = 1
So 421567-91-1 is a valid CAS Registry Number.
421567-91-1Relevant articles and documents
Asymmetric synthesis of pseudo C2-symmetric 2-methyl substituted 1,3-diols
Enders,Voith
, p. 29 - 32 (2002)
The diastereo- and enantioselective synthesis of pseudo C2-symmetric, 2-methyl substituted, acetonide protected (4) and free 1,3-diols 5 employing the SAMP-hydrazone mothodology with virtually complete asymmetric induction (de ≥ 96%, ee ≥ 98-99
