249728-78-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 249728-78-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,4,9,7,2 and 8 respectively; the second part has 2 digits, 7 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 249728-78:
(8*2)+(7*4)+(6*9)+(5*7)+(4*2)+(3*8)+(2*7)+(1*8)=187
187 % 10 = 7
So 249728-78-7 is a valid CAS Registry Number.
249728-78-7Relevant articles and documents
Expedient synthesis of perhaloaldehyde N-acyl hemiaminals
Ingrassia, Laurent,Mulliez, Michel
, p. 1731 - 1738 (2007/10/03)
Various perhaloaldehyde N-acyl hemiaminals 1 are readily prepared in high yields by condensation of amides 7 with easily available perhaloaldehyde O-ethyl hemiacetals 8 or hydrates 9 in the presence of 5 A molecular sieves.