33450-01-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 33450-01-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,3,4,5 and 0 respectively; the second part has 2 digits, 0 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 33450-01:
(7*3)+(6*3)+(5*4)+(4*5)+(3*0)+(2*0)+(1*1)=80
80 % 10 = 0
So 33450-01-0 is a valid CAS Registry Number.
33450-01-0Relevant articles and documents
CYCLIZATION OF THIOPHENEDICARBOXALDEHYDE WITH NITROMETHANE
Borai, Mahmed El,Fahmy, Mahmoud
, p. 385 - 388 (2007/10/02)
The reaction of thiopheno and dicarboxaldehyde with nitromethane in alcoholic potassium hydroxide afforded th corresponding 5-nitro-4H-cyclopentathiophen-4-ol II and 5-nitro-4H-cyclopentathiophen-4-ol III, respectively.
