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75644-23-4

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75644-23-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 75644-23-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,5,6,4 and 4 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 75644-23:
(7*7)+(6*5)+(5*6)+(4*4)+(3*4)+(2*2)+(1*3)=144
144 % 10 = 4
So 75644-23-4 is a valid CAS Registry Number.

75644-23-4Relevant articles and documents

ACYLIERUNG VON HETEROCYCLEN MIT KOHLENSAEUREDERIVATEN-III; SYNTHESEN VON BENZIMIDAZOLO (1,2,4)THIADIAZOLINEN

Martin, D.,Tittelbach, F.

, p. 2311 - 2314 (2007/10/02)

The addition products of benzimidazolinethione and isocyanates are easily cyclized to benzimidazolo(1,2,4)thiadiazoline systems 4 by treatment with Br2/NEt3.The thio-analogues 9 were synthesized from 2-aminophenyl thioureas and thiophosgene followe

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