94849-21-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 94849-21-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,4,8,4 and 9 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 94849-21:
(7*9)+(6*4)+(5*8)+(4*4)+(3*9)+(2*2)+(1*1)=175
175 % 10 = 5
So 94849-21-5 is a valid CAS Registry Number.
94849-21-5Relevant articles and documents
2-BENZOPYRYLIUM SALTS. 27. FORMATION OF SUBSTITUTED CHRYSENES FROM 1-METHYL-2-BENZOPYRYLIUM SALTS
Korobka, I. V.,Voloshina, A. I.,Kuznetsov, E. V.
, p. 1214 - 1218 (1984)
1-Methyl-2-benzopyrylium salts with a free β position of the heteroring primarily form substituted chrysenes.In alkaline media this process does not proceed through the intermediate formation of 1,5-diketones.
