81835-99-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 81835-99-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,8,3 and 5 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 81835-99:
(7*8)+(6*1)+(5*8)+(4*3)+(3*5)+(2*9)+(1*9)=156
156 % 10 = 6
So 81835-99-6 is a valid CAS Registry Number.
81835-99-6Relevant articles and documents
SYNTHESIS OF SOME 5,5-DISUBSTITUTED 2-THIOHYDANTOIN DERIVATIVES
Chiang, Hung-Cheh,Ko, Jin-Ren
, p. 529 - 530 (2007/10/02)
Treatment of 5,5-diphenyl-2-thiohydantoin (2a) with allyl bromide in basic alcohol solution gave 5,5-diphenyl-2-allylthiohydantoin (3a) in 78.5percent yield, whose derivatives (3b), (3f), (4a-c), and (6) were also prepared in a similar fashion.
