155087-28-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 155087-28-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,5,0,8 and 7 respectively; the second part has 2 digits, 2 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 155087-28:
(8*1)+(7*5)+(6*5)+(5*0)+(4*8)+(3*7)+(2*2)+(1*8)=138
138 % 10 = 8
So 155087-28-8 is a valid CAS Registry Number.
155087-28-8Relevant articles and documents
Synthesis of 2,4-diaminothieno- and pyrrolo[2,3-d]pyrimidine-6-carboxylic acid derivatives
Tumkevicius,Dailide,Kaminskas
, p. 1629 - 1633 (2006)
A series of new 2,4-diaminothieno[2,3-d]- and 2,4-diaminopyrrolo[2,3-d] pyrimidine derivatives were synthesised. Reaction of 2-amino-4,6- dichloropyrimidine-5-carbaldehyde (1) with ethyl mercaptoacetate, methyl N-methylglycinate or ethyl glycinate afforde