116564-56-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 116564-56-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,6,5,6 and 4 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 116564-56:
(8*1)+(7*1)+(6*6)+(5*5)+(4*6)+(3*4)+(2*5)+(1*6)=128
128 % 10 = 8
So 116564-56-8 is a valid CAS Registry Number.
116564-56-8Relevant articles and documents
Synthesis of New Triazolo-Annulated 8-Azapurines
Ried, Walter,Laoutidis, Joannis
, p. 1107 - 1110 (2007/10/02)
Treatment of the 5-amino-4-cyano-1,2,3-triazoles 1a-f with triethyl orthoformate and orthoacetate 2 gives the ethoxymethyleneamino-1,2,3-triazoles 3a-f which react with hydrazine hydrate at room temperature to yield the 1-amino-6-imino-8-azapurines 4a-f.T