178939-83-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 178939-83-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,8,9,3 and 9 respectively; the second part has 2 digits, 8 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 178939-83:
(8*1)+(7*7)+(6*8)+(5*9)+(4*3)+(3*9)+(2*8)+(1*3)=208
208 % 10 = 8
So 178939-83-8 is a valid CAS Registry Number.
178939-83-8Relevant academic research and scientific papers
Milgrom, Lionel R.,Yahioglu, Gokhan
, p. 4069 - 4072 (1996)
Examples of the title porphyrins were prepared (by coupling acetylenic dipyrromethanes with substituted propynals), and their spectroscopic properties reported.
