7209-04-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 7209-04-3 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 7,2,0 and 9 respectively; the second part has 2 digits, 0 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 7209-04:
(6*7)+(5*2)+(4*0)+(3*9)+(2*0)+(1*4)=83
83 % 10 = 3
So 7209-04-3 is a valid CAS Registry Number.
7209-04-3Relevant articles and documents
SYNTHESIS AND CHEMISTRY OF DIALKYL- AND DIARYLTRICHLOROMETHYLPHOSPHINES
Majewski, Piotr
, p. 185 - 194 (2007/10/02)
Dialkyltrichloromethylphosphines; diphenyltrichloro-methylphosphine; P-chloro-dialkyl-dichloromethylenephosphoranes; P-chloro-diphenyl-dichloromethylenephophorane; phosphonium salt; chlorination; dehydration; condensation.