319911-73-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 319911-73-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,1,9,9,1 and 1 respectively; the second part has 2 digits, 7 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 319911-73:
(8*3)+(7*1)+(6*9)+(5*9)+(4*1)+(3*1)+(2*7)+(1*3)=154
154 % 10 = 4
So 319911-73-4 is a valid CAS Registry Number.
319911-73-4Relevant articles and documents
Synthesis of the sialidase inhibitor siastatin B.
Knapp,Zhao
, p. 4037 - 4040 (2007/10/03)
[structure] The resolved piperidinecarboxylate (R)-7 was converted to siastatin B (1) by an efficient and stereoselective sequence that includes a bromo-beta-lactonization and an N-acyliminium azidation. Two analogues (3 and 4) of siastatin were also prepared.