221114-75-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 221114-75-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,1,1,1 and 4 respectively; the second part has 2 digits, 7 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 221114-75:
(8*2)+(7*2)+(6*1)+(5*1)+(4*1)+(3*4)+(2*7)+(1*5)=76
76 % 10 = 6
So 221114-75-6 is a valid CAS Registry Number.
221114-75-6Relevant academic research and scientific papers
Reaction of α,β-spiro epoxy alkanones: Part VI - Reactions of spirononanones with amines and thiourea
Sayed, H. H.
, p. 1054 - 1058 (2007/10/03)
2-Aryl-1-oxaspironon-4-one 1a,b on reactions with amines give compounds 2a-d and 3a-d. Compounds 3a-d react with thiourea to give quinazoline thiones 4a-d which on treatment with chloroacetic acid furnish compound 5. Compound 5 on condensation with a
