.alpha.-Formylthiophene .alpha.-Thiophenecarboxaldehyde 2-Formylthiophene 2-Thienylaldehyde 2-Thienylcarboxaldehyde 2-Thiophenealdehyde 2-Thiophenecarboxaldehyde 98-03-3 NSC2162 WLN: T5SJ BVH