188633-85-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 188633-85-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,8,6,3 and 3 respectively; the second part has 2 digits, 8 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 188633-85:
(8*1)+(7*8)+(6*8)+(5*6)+(4*3)+(3*3)+(2*8)+(1*5)=184
184 % 10 = 4
So 188633-85-4 is a valid CAS Registry Number.
188633-85-4Relevant articles and documents
Synthesis of pseudopeptides with sulfoximines as chiral backbone modifying elements
Bolm, Carsten,Moll, Guido,Kahmann, Jan D.
, p. 1118 - 1128 (2007/10/03)
The synthesis of pseudopeptides with a chiral α-sulfonimidoylcarboxy moiety in the backbone is described. Starting from readily available (Ss)-S-methyl S-phenyl sulfoximine and various cyclic and acyclic α-amino acids the desired products are o