201-42-3 Usage
Chemical class
Polycyclic aromatic hydrocarbon (PAH)
Structure
Five fused benzene rings
Conjugation
Highly conjugated compound
Stability
High stability due to its structure
Electronic properties
Unique electronic properties
Applications
Organic electronic devices (OLEDs, OFETs)
Environmental concern
Known environmental pollutant
Presence
Widespread in combustion emissions and industrial processes
Health risk
Potential human carcinogen
Regulation
Need for thorough study and understanding of health effects for proper regulation and exposure control
Check Digit Verification of cas no
The CAS Registry Mumber 201-42-3 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 2,0 and 1 respectively; the second part has 2 digits, 4 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 201-42:
(5*2)+(4*0)+(3*1)+(2*4)+(1*2)=23
23 % 10 = 3
So 201-42-3 is a valid CAS Registry Number.
