858935-55-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 858935-55-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,5,8,9,3 and 5 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 858935-55:
(8*8)+(7*5)+(6*8)+(5*9)+(4*3)+(3*5)+(2*5)+(1*5)=234
234 % 10 = 4
So 858935-55-4 is a valid CAS Registry Number.
858935-55-4Relevant academic research and scientific papers
Linearly -π- extended porphyrins: Synthesis of novel tetrabenzoylporphyrins
Elghamry, Ibrahim,Tietze, Lutz F.
, p. 503 - 508 (2007/10/03)
The π-extended porphyrins 11a - c with a λmax = 644, 643 and 639 nm were synthesized by an acid catalysed reaction of the dipyrrolylmethane 10 with different aldehydes followed by oxidation with 2,3-dichloro-5,6-dicyano-1,4-quinone (DDQ). In a
