87744-30-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 87744-30-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,7,7,4 and 4 respectively; the second part has 2 digits, 3 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 87744-30:
(7*8)+(6*7)+(5*7)+(4*4)+(3*4)+(2*3)+(1*0)=167
167 % 10 = 7
So 87744-30-7 is a valid CAS Registry Number.
87744-30-7Relevant articles and documents
The Addition of Amines to 3-Bromochromone And 6-Bromoflurochromone. An unexpected Ring Contraction of the Pyrone Ring.
Gammill, R. B.,Nash, S. A.,Mizsak, S. A.
, p. 3435 - 3438 (2007/10/02)
Addition of amines to 3-bromochromone and 6-bromofurochromone results in a novel ring contraction of the pyrone ring.