139914-39-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 139914-39-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,9,9,1 and 4 respectively; the second part has 2 digits, 3 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 139914-39:
(8*1)+(7*3)+(6*9)+(5*9)+(4*1)+(3*4)+(2*3)+(1*9)=159
159 % 10 = 9
So 139914-39-9 is a valid CAS Registry Number.
139914-39-9Relevant articles and documents
Synthesis of β-keto-phosphotriesters using functionalized diazoketones
Gefflaut,Perie
, p. 29 - 33 (2007/10/02)
Convenient substitution (Ac) on the heteroatom in diazo ketones as in compounds 6, 8 or 10, prevents the classical cyclisation reaction and allows intermolecular addition; the reaction is applied to phosphorylation (reaction 1).