37884-21-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 37884-21-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,7,8,8 and 4 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 37884-21:
(7*3)+(6*7)+(5*8)+(4*8)+(3*4)+(2*2)+(1*1)=152
152 % 10 = 2
So 37884-21-2 is a valid CAS Registry Number.
37884-21-2Relevant articles and documents
Synthesis of oxygen heterocycles
Ganguly,Mahata,Biswas
, p. 1347 - 1349 (2007/10/03)
A generalised scheme for the synthesis of flavones, flavonones and chromones involving 3-acyl-γ-pyrone intermediates has been developed. Convenient synthesis of other oxygen heterocycles using similar procedure have been outlined.